Mining Trucks 798 AC

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Key Specs

Nominal Rated Payload: 410 ton (US); 372 t

Rated Gross Machine Weight: 1375000 lb; 623690 kg

Gross Power - SAE J1995: 3500 hp; 2610 kW

798 AC
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Overview

Hauls More - More Efficiently and Reliably

The Cat® 798 AC electric drive truck is designed to haul more — with more efficiency, controllability, and reliability than any other electric drive truck in the marketplace. And while it may be a recent addition to the Cat ultra-class lineup, it delivers the same powerful, proven performance you expect from a Cat truck. The 798 AC delivers a payload up to 372 tonnes (410 tons), high speed on grade, easier maintenance, and excellent electric retarding and brake performance. The result? Improved productivity, high availability, and more confident operators. By hauling more every load, every cycle and every shift, it creates a low-cost-per-ton hauling operation that delivers a better bottom line.

Benefits

Class-Leading Nominal rated Payload

Delivering the highest standard payload available in its size class

Up to 18% More Torque

Unlock maximum drivetrain capability with Cat TorqueBoost technology

Easier Maintenance — Less Often

With enhanced service access, long service intervals, service-friendly layouts, modular designs and more

Features At A Glance

Greater visibility thanks to wide field of view from the cab and radial retard grid that improves right-hand view.
Safer access and egress with 600-mm-wide (23.6-in-wide) ladders, flat deck, toe kicks, and optional power access stair attachment.
Confidence-building features such as anti-rollback, traction controls, reverse shift inhibitor, Automatic Retarding Control, and door sensor warning for park brake application.
Full dynamic retarding through a compact radial grid, backstopped by the proven design of Caterpillar four-corner oil-cooled brakes, for stable handling and confident stopping.
Fully independent secondary brake system that provides emergency controllability with a hydraulically actuated secondary brake pedal that serves as a backup to electronic controls.

The most efficient electric drive truck in its size class — moving more tonnes per liter (tons per gallon) and hauling more material faster—so you can move more over the course of a shift, or haul the same amount of material with fewer trucks.
Available with higher horsepower to boost productivity in deeper pits, plus electronically-selectable lower horsepower settings that allow the 798 to better align with mixed fleets.
Ease of operation and reduced costs thanks to deep integration of Cat engine, AC drive system, hydraulics and controls.
End-to-end visibility of all truck parameters for optimized fuel efficiency, speed on grade and parasitic loads across the operating range.
Excellent slow speed control within service areas as well as superior motor torque and acceleration pulling away from the shovel.

Ergonomic cab layout, excellent all-around visibility, and controls, levers and switches that are positioned for ease of use.
Automatic climate control and reduced vibration and sound.
Next generation seat with height adjuster, adjustable shoulder stock to keep the seatbelt from rubbing, and seat back, side and lumbar bolsters to increase stability.

High displacement, low rpm rating and conservative horsepower ratings, which mean more time on the haul road and less time in the shop.
Inlet manifolds and turbochargers that are located outside of the engine's V, giving the service technicians more space to work on top of the engine and within the engine bay.
Sealed and pressurized inverter cabinet that requires no cleaning, eliminating hundreds of hours of maintenance over the life of the truck/
Engine walkways and service platforms, modular components, service-friendly layout and ground-level grouped service points.
Extended oil change interval (up to three times) with standard engine equipment including Centrifugal Oil Filter (COF) and Self-Cleaning Filter (SCF).

First overhaul life of 25,000 hours for lower cost of ownership, with proven C175 engine and electric drive system.
Highly validated and proven straight frame rail design that eliminates the bends and breaks that can occur at stress concentrations.
Outstanding durability delivered by box section construction that uses Caterpillar proprietary steel specification for excellent welding characteristics.
Increased frame life thanks to deep section main rails in critical areas of the frame lower stress levels.
Frame, powertrain, engine and components that are built to be rebuilt — delivering multiple lives of like-new performance at a fraction-of-new price.

High voltage system that operates at lower current than most competitive trucks, contributing to higher efficiency, lower heat generation, smaller and lighter components, and longer component life.
Radial style retarding grid with AC electric motor that requires no regular motor maintenance and is quieter and lighter than box grids.
State-of-the-art high voltage IGBTs for maximum AC drive system efficiency, and a dual-bearing brushless alternator that delivers long life and less maintenance, with no shimming required.
AC Drive dynamic retarding for continuous retarding power; AC electric motor that reduces maintenance; and state-of-the-art high voltage IGBTs for maximum AC drive system efficiency.
Variable hydraulic blower fan, which provides optimized cooling even at idle for increased component performance and life.

Designed to use less fuel, which reduces engine emissions and carbon footprint.
Optional U.S. EPA Tier 4 Final / EU Stage V engine, which reduces NOx by 62% and particulates by 93% when compared to Tier 1 emissions.
Reduced waste thanks to Centrifugal Oil Filter (COF), standard self-cleaning engine filter, extended oil change intervals and reduced oil usage.
Engines compatible with diesel fuel blended with lower-carbon intensity fuels such as biofuels and renewable fuels, plus power options like trolley.
Cat Rebuild and Cat Reman programs, which preserve raw materials, conserve energy and reduce emissions.

Equipped with standard Product Link™ Elite monitoring system, which delivers health and payload information to keep performance high and enable proactive maintenance planning.
Factory-ready for fully integrated Cat MineStar™ Command for hauling, an autonomous hauling solution proven to increase productivity up to 30%.
Optional MineStar Fleet, a fleet monitoring system, to measure, manage and maximize the overall hauling operation.
Optional MineStar Detect proximity detection system, which uses cameras to give operators a better view of what's happening around their equipment.
Optional in-cab Cat Driver Safety System (DSS) intervenes when operator fatigue or distraction are detected.

Bodies designed to fit with the chassis, sized to meet payload requirements and work as part of the truck system.
High Efficiency (HE) dump body option that is lightweight, simplified and durable.
With unique minimal structure design, HE body provides long life while minimizing weight for increased payload.
HE body sized and configured to meet the specific needs of the mine, dictated by fragmentation, abrasion, cohesion and the loading tool.

Specifications Standard Equipment Optional Equipment

Product Specifications for 798 AC

Weights - Approximate

Nominal Rated Payload	410 ton (US) 372 t
Rated Gross Machine Weight	1375000 lb 623690 kg
Chassis Weight	453826 lb 205852 kg
Body Weight Range	38 833 - 43 275 kg (85,611 - 95,406 lb) 38 833 - 43 275 kg (85,611 - 95,406 lb)
Note (1)	Consult your tire manufacturer for maximum tire load. Consult your tire manufacturer for maximum tire load.
Note (2)	Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires. Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires.
Note (3)	Body weight varies depending on how body is equipped. Body weight varies depending on how body is equipped.

Engine

Gross Power - SAE J1995	3500 hp 2610 kW
Engine Model	Cat® C175-16 Cat® C175-16
Net Power - SAE J1349	3405 hp 2539 kW
Optional Gross Power - SAE J1995	3100 hp 2312 kW
Rated Speed	1800 r/min 1800 r/min
Emissions Rating	Fuel Optimized Fuel Optimized
Bore	6.9 in 175 mm
Stroke	8.7 in 220 mm
Displacement	5187 in³ 85 l
Note (1)	Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator. Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.
Note (2)	U.S. EPA Tier 4 Final / EU Stage V available for applicable markets. U.S. EPA Tier 4 Final / EU Stage V available for applicable markets.
Note (3)	Additional fuel optimized selectable power ratings: 2312 kW / 3,100 hp Additional fuel optimized selectable power ratings: 2312 kW / 3,100 hp

Service Refill Capacities - High Altitude Only

Fuel Tank	2000 gal (US) 7571 l
Cooling System	273 gal (US) 1032 l
Crankcase	124 gal (US) 471 l
Hydraulic Tank	273 gal (US) 1032 l
Hydraulic System (includes tank)	342 gal (US) 1296 l

Service Refill Capacities

Fuel Tank	1300 gal (US) 4922 l
Fuel Tank (Tier 4)	1200 gal (US) 4542 l
Diesel Exhaust Fluid Tank	100 gal (US) 379 l
Cooling System	211 gal (US) 799 l
Crankcase	82 gal (US) 310 l
Final Drive - Each	67 gal (US) 254 l
Hydraulic System - Including Tank	385 gal (US) 1458 l
Hydraulic Tank	296 gal (US) 1121 l
Grease Tank	90 lb 41 kg
Note (1)	DEF Tank only available for U.S. EPA Tier 4 Final / EU Stage V engine option DEF Tank only available for U.S. EPA Tier 4 Final / EU Stage V engine option

Steering

Steer Angle	39 ° 39 °
Turning Diameter - Front	106.3 ft 32.4 m
Steering Standards	ISO 5010:2019 ISO 5010:2019
Note	Turning Diameter (ISO 7457:1997) Turning Diameter (ISO 7457:1997)

AC Drive System

Total Reduction Ratio	35:01:00 35:01:00
Top Speed - Loaded	40 mile/h 64 km/h
Generator/Alternator	Brushless, engine mounted, dual bearing Brushless, engine mounted, dual bearing
Controls	IGBT Inverter Technology, air cooled, pressurized cabinet with filtration IGBT Inverter Technology, air cooled, pressurized cabinet with filtration
Wheel Motor	Cat high-torque AC induction, rear axle mounted Cat high-torque AC induction, rear axle mounted
Cooling System	Cat variable speed, hydraulically driven cooling system Cat variable speed, hydraulically driven cooling system

Braking System

Service Brakes	Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Front Wet Disc Brake Surface Area	22642 in² 146081 cm²
Rear - Wet Disc Brake Surface Area	32730 in² 211163 cm²
Standards	Service and Secondary: ISO 3450:2011 Service and Secondary: ISO 3450:2011
Electric Retarding	Radial Grid Design Radial Grid Design
Dynamic Retarding Power - Continuous	5480 hp 4086 kW
Parking Brakes	Four-corner, Multi-disc, Spring Applied, Hydraulically Released Four-corner, Multi-disc, Spring Applied, Hydraulically Released
Load Brake	Rear service brakes Rear service brakes
Note	Anti-Lock Brake System (ABS) optional with CMD package Anti-Lock Brake System (ABS) optional with CMD package

Weight Distributions - Approximate

Front Axle - Empty	47 % 47 %
Rear Axle - Empty	53 % 53 %
Front Axle - Loaded	33 % 33 %
Rear Axle - Loaded	67 % 67 %
Note	Weight distributions optimized with Cat body. Weight distributions optimized with Cat body.

Capacity - HE Body - 100% fill factor

Struck	129-200 m³ (168-261 yd³) 129-200 m³ (168-261 yd³)
Heaped (SAE 2:1)	218-276 m³ (285-361 yd³) 218-276 m³ (285-361 yd³)
Note	Contact your local Cat dealer for body recommendations. Contact your local Cat dealer for body recommendations.

Body Hoists

Type	Twin, two-stage hydraulic cylinders with snubbing valve. Twin, two-stage hydraulic cylinders with snubbing valve.
Pump Flow - High Idle	257.3 gpm 964 L/min
Relief Valve Setting - Raise	3029 psi 20884 kPa
Body Raise Time - High Idle	21 s 21 s
Body Lower Time - Float	22 s 22 s
Body Power Down- High Idle	17.5 s 17.5 s
Note (1)	Twin, two-stage hydraulic cylinders mounted outside main frame; double-acting cylinders in both stages. Twin, two-stage hydraulic cylinders mounted outside main frame; double-acting cylinders in both stages.
Note (2)	Power raise in both stages; power down capability in both stages. Power raise in both stages; power down capability in both stages.
Note (3)	Automatic body-lower modulation reduces impact on frame. Automatic body-lower modulation reduces impact on frame.

Suspension

Type	Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments
Effective Cylinder Stroke - Front	10 in 254 mm
Effective Cylinder Stroke - Rear	5 in 133.35 mm

Cab

Air Conditioning	HFC - 134A refrigerant: 21,600 Btu/h HFC - 134A refrigerant: 21,600 Btu/h
Heater / Defroster	24600 Btu/h 24600 Btu/h
Note	Ambient capabilities down to -15C (5F) for heater/defroster and up to 50C (122F) for air conditioning. Ambient capabilities down to -15C (5F) for heater/defroster and up to 50C (122F) for air conditioning.
ROPS Standards (1)	ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer. ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer.
FOPS Standards	FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer. FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer.

Engine - High Altitude Only

Engine Model	Cat® C175-20 Cat® C175-20
Gross Power SAE J1995:2014	4150 hp 3095 kW
Net Power - SAE J1349:2011	4000 hp 2983 kW
Rated Speed	1750 r/min 1750 r/min
Emissions Rating	Fuel Optimized Fuel Optimized
Bore	6.9 in 175 mm
Stroke	8.7 in 220 mm
Displacement	6469 in³ 106 l
Note 1	Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator. Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.
Note 2	Additional fuel optimized selectable power rating: 2983 kW / 4,000 hp Additional fuel optimized selectable power rating: 2983 kW / 4,000 hp

Tires

Rims	44" x 63" Rims 44" x 63" Rims
Standard Tires	59/80 R63 59/80 R63
Note (1)	Quick Change Rims optional. Quick Change Rims optional.
Note (2)	Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities. Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities.

Dimensions (Approximate)

Height - Top of ROPS	22.1 ft 6720 mm
Overall Length	51.44 ft 15679 mm
Wheel Base	21.9 ft 6674 mm
Rear Axle - Tail	16.07 ft 4898 mm
Dump Clearance - Empty	5.72 ft 1744 mm
Loading Height - Empty	25.54 ft 7784 mm
Overall Height - Body Raised	48.85 ft 14890 mm
Centerline Front Tire Width	23.06 ft 7028 mm
Front Axle Clearance - Loaded	2.81 ft 855 mm
Overall Canopy Width (with rock deflectors)	33.15 ft 10103 mm
Outside Body/Canopy Width (without rock deflectors)	31.62 ft 9639 mm
Inside Body Width	29.44 ft 8973 mm
Front Canopy Height - Empty	26.01 ft 7928 mm
Rear Axle Clearance - Loaded	2.8 ft 854 mm
Centerline of Rear Dual Tire Width	19.5 ft 5943 mm
Overall Tire Width - Empty	30.27 ft 9226 mm
Overall Length (High Altitude only)	51.87 ft 15810 mm
Note	Dimensions listed includes canopy deflectors Dimensions listed includes canopy deflectors

Sound

Sound Standards

The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008. The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008.

798 AC Standard Equipment

POWER TRAIN

Cat® C175-16 Diesel Engine: 2610 kW (3,500 hp) Fuel Optimized , U.S. EPA Tier 2 equivalent (available for applicable markets)

Cat® C175-16 Diesel Engine: 2610 kW (3,500 hp) U.S. EPA Tier 4 Final / EU Stage V (available for applicable markets)

C175-16 Diesel Engine
– Turbocharging (4) / Aftercooled (ATAAC)
– Centrifugal oil filter
– Self-cleaning oil filter
– Charging Alternator (225 amp), brushless
– Pre-lubrication/engine
– Air cleaner with precleaner (4)
– Multi-point oil pressure sensing
– Exhaust - Muffler, Right Side Exit

Cat C175-20 Diesel Engine (High Altitude Only)
- 3095 kW (4,150 hp) Fuel Optimized (available for applicable markets)
- Centrifugal oil filter
- Self-cleaning oil filter
- Charging Alternator (225 amp), brushless
- Pre-lubrication/engine
- Air cleaner with precleaner (4)
- Multi-point oil pressure sensing
- Exhaust - Muffler, Right Side Exit

Braking system:
– Electric dynamic retarding with blended low speed
– Oil-cooled, Multi-disc (front and rear) - Service, Parking, Secondary
– Load Brake (rear axle only)
– Extended Life Brake Disc Material
– Automatic Retarder Control (ARC)
– Brake Release Motor (towing)

Cat® AC Drivetrain:
– AC generator
– AC induction motors (high-torque)
– IGBT motor control
– Radial retarding grid with AC motor control
– Programmable top speed
– TorqueBoost technology
– Traction control system

Directional Shift Management:
– Body-up reverse neutralizer
– Body-up shift inhibitor
– Reverse shift inhibitor
– Neutral coast inhibitor
– Neutral start inhibitor

Additional Features:
– Rear axle continuous lubrication and filtration
– Rear axle continuous oil cooling

OPERATION AND CONTROLS

Integrated ROPS/FOPS cab, insulated/sound suppressed

Seat, operator, air suspension, adjustable, heated/cooled

Seatbelt, operator, three point

Seat, trainer, air suspension, adjustable

Seatbelt, trainer, two point

Steering wheel, tilt, telescopic, horn

Horn, electric

Directional shift lever

Single Pedal Retarding & oil-cooled brake control

Automatic Retard Control (ARC) toggle switch

Load brake switch

Windshield with tinted/safety glass

Window, electric powered, operator/passenger

Windshield Wipers (2), intermittent control and washer

Visor (2)

Storage rear of seats

Cup holder (2)

Dome courtesy light

Entertainment radio ready with speakers and wiring harnesses

Converter, 12V

12V DC power supply (1)

Mirrors, standard (Left-Flat, Right-Convex)

Fixed access ladder, left hand ground access

Fixed access ladder, right hand round access (High Altitude Only)

HVAC:
– Pressurized, filtered environment
– Air conditioner
– Heater/defroster

Metric or English gauges:
– Speedometer
– Tachometer
– Electric hour meter
– Fuel level
– DEF level (U.S. EPA Tier 4 Final / EU Stage V engines only)
– Hydraulic oil temperature
– Engine coolant temperature

Service & Information:
– Diagnostic connection port
– Electric engine control fault indicator
– Alarm, Park brake / open operator door
– Third party telematics port
– VIMS message center advisor

ELECTRICAL

Audible Alarm, backup

Electrical system, 24V with fuses and breakers

Batteries, 12V (8) 90 amp hour

Ground level Battery charge receptacle

Lighting, signals/service:
– Headlights (4 low beam, 4 high beam), LED
– Headlights (4 low beam, 2 high beam), LED (High Altitude only)
– Backup and marker/hazard, LED
– Directional signals (front and rear), LED
– Front stair access/service deck, LED
– Stop/tail lights, LED
– Engine compartment, LED
– Inverter energy warning lights, LED

Payload indicator, red/green

Payload, digital display

ADDITIONAL FEATURES AND EQUIPMENT

Accumulators (Steering & Brake) – Australian and Canadian certified

Automatic lubrication system

Rotating component guards

Mud Flaps

Tow hooks and pins (front)

Tow pin (rear) (empty truck only)

44 x 63 rims, six position (6)

Fueling:
– 4922 L (1,300 gal) fuel tank (Fuel optimized engines only)
– 4543 L (1,200 gal) fuel tank (U.S. EPA Tier 4 Final / EU Stage V engines only)
– 379 L (100 gallon) DEF tank (U.S. EPA Tier 4 Final / EU Stage V engines only)
– Fuel filter with water separator
– 210 GPM Fast fill fuel system (Left and Right)

Service:
– Engine service platforms (2)
– ANSI or ISO service instructions
– S•O•S℠ sample points (hydraulic oil, engine coolant, engine oil)
– Ground level machine lockout (battery)
– Ground level engine shut-down
– Drivetrain lockout
– Drivetrain lockout at ground level (High Altitude only)
– Engine start lockout
– Auxiliary "buddy" dumping quick connect
– Auxiliary steering quick connect (towing)

CAT® TECHNOLOGY PRODUCTS

Cat® MineStar™ Detect (Radar and Camera) System

Cat® Product Link™ Elite (Cellular)

DUMP BODY

High Efficiency (HE) body, 218-276 m³ (285-361 yd³)
– HE Body Mounting Group
– Rock ejectors (chain)

ANTIFREEZE

Cat Extended Life Coolant (ELC) protects to –35° C (–30° F)

798 AC Optional Equipment

POWER TRAIN

Cat® C175-16 Diesel Engine: 2312 kW (3,100 hp) power setting (Fuel optimized / U.S. EPA Tier 2 equiv. engines only)

Cat C175-20 Diesel Engine (High Alititude only): 2983 kW (4,000 hp) power setting, Fuel Optimized (available for applicable markets)

Body heat exhaust

OPERATION AND CONTROLS

Throttle lock

Timer, engine shutdown

Heated mirrors (Left and Right)

Powered access ladder, left hand ground access

Language monitors: English, Spanish, Italian, Portuguese, Dutch, Norwegian, Swedish, Estonian, Latin, Lithuanian, Slovakian, Slovenian, Greek, Romanian, Russian, Polish, Czech, Hungarian, Icelandic, Finnish, Danish, Thai, Indonesian, Vietnam, Malaysian, Chinese

OPERATIONS AND CONTROLS

Powered access ladder, right hand ground access (High Altitude only)

ELECTRICAL

Lighting, signals/service:
– Fog lights, LED
– Work lights, LED
– Side profile lights, LED
– Dump body marker/stop lights, LED

Retarding indicator light, multi-color, cab exterior

Payload, digital display

ADDITIONAL FEATURES AND EQUIPMENT

Fueling: 300 GPM Fast fill fuel system (Left and Right)

Portable fire extinguisher

Front bumper single-point center tow

Wheel chocks (ANSI and ISO)

44 x 63 rims, quick change (2 quick change, 4 standard)

Service:
– Inverter platform (rear access)
– Service Center, fast-fill

CAT® TECHNOLOGY PRODUCTS

Cat® MineStar™ Detect (Camera Only) System

Cat® Product Link™ Elite (Satellite)

Cat® MineStar™ Health

Cat® MineStar™ Fleet

Cat® MineStar™ Terrain

Cat® MineStar™ Command-Ready

Cat® MineStar™ Command

Cat® Trolley Assist Attachment

DUMP BODY

HE rock box liner

HE canopy rock deflectors

HE rear tire rock deflectors

HE impact liner

Chain and solid bar

Canopy Extension

ANTIFREEZE

Antifreeze/coolant protects to –50° C (–58° F)

Product Specifications for 798 AC

Download Print

Weights - Approximate

Nominal Rated Payload	410 ton (US) 372 t
Rated Gross Machine Weight	1375000 lb 623690 kg
Chassis Weight	453826 lb 205852 kg
Body Weight Range	38 833 - 43 275 kg (85,611 - 95,406 lb) 38 833 - 43 275 kg (85,611 - 95,406 lb)
Note (1)	Consult your tire manufacturer for maximum tire load. Consult your tire manufacturer for maximum tire load.
Note (2)	Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires. Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires.
Note (3)	Body weight varies depending on how body is equipped. Body weight varies depending on how body is equipped.

Engine

Gross Power - SAE J1995	3500 hp 2610 kW
Engine Model	Cat® C175-16 Cat® C175-16
Net Power - SAE J1349	3405 hp 2539 kW
Optional Gross Power - SAE J1995	3100 hp 2312 kW
Rated Speed	1800 r/min 1800 r/min
Emissions Rating	Fuel Optimized Fuel Optimized
Bore	6.9 in 175 mm
Stroke	8.7 in 220 mm
Displacement	5187 in³ 85 l
Note (1)	Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator. Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.
Note (2)	U.S. EPA Tier 4 Final / EU Stage V available for applicable markets. U.S. EPA Tier 4 Final / EU Stage V available for applicable markets.
Note (3)	Additional fuel optimized selectable power ratings: 2312 kW / 3,100 hp Additional fuel optimized selectable power ratings: 2312 kW / 3,100 hp

Service Refill Capacities - High Altitude Only

Fuel Tank	2000 gal (US) 7571 l
Cooling System	273 gal (US) 1032 l
Crankcase	124 gal (US) 471 l
Hydraulic Tank	273 gal (US) 1032 l
Hydraulic System (includes tank)	342 gal (US) 1296 l

Service Refill Capacities

Fuel Tank	1300 gal (US) 4922 l
Fuel Tank (Tier 4)	1200 gal (US) 4542 l
Diesel Exhaust Fluid Tank	100 gal (US) 379 l
Cooling System	211 gal (US) 799 l
Crankcase	82 gal (US) 310 l
Final Drive - Each	67 gal (US) 254 l
Hydraulic System - Including Tank	385 gal (US) 1458 l
Hydraulic Tank	296 gal (US) 1121 l
Grease Tank	90 lb 41 kg
Note (1)	DEF Tank only available for U.S. EPA Tier 4 Final / EU Stage V engine option DEF Tank only available for U.S. EPA Tier 4 Final / EU Stage V engine option

Steering

Steer Angle	39 ° 39 °
Turning Diameter - Front	106.3 ft 32.4 m
Steering Standards	ISO 5010:2019 ISO 5010:2019
Note	Turning Diameter (ISO 7457:1997) Turning Diameter (ISO 7457:1997)

AC Drive System

Total Reduction Ratio	35:01:00 35:01:00
Top Speed - Loaded	40 mile/h 64 km/h
Generator/Alternator	Brushless, engine mounted, dual bearing Brushless, engine mounted, dual bearing
Controls	IGBT Inverter Technology, air cooled, pressurized cabinet with filtration IGBT Inverter Technology, air cooled, pressurized cabinet with filtration
Wheel Motor	Cat high-torque AC induction, rear axle mounted Cat high-torque AC induction, rear axle mounted
Cooling System	Cat variable speed, hydraulically driven cooling system Cat variable speed, hydraulically driven cooling system

Braking System

Service Brakes	Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated
Front Wet Disc Brake Surface Area	22642 in² 146081 cm²
Rear - Wet Disc Brake Surface Area	32730 in² 211163 cm²
Standards	Service and Secondary: ISO 3450:2011 Service and Secondary: ISO 3450:2011
Electric Retarding	Radial Grid Design Radial Grid Design
Dynamic Retarding Power - Continuous	5480 hp 4086 kW
Parking Brakes	Four-corner, Multi-disc, Spring Applied, Hydraulically Released Four-corner, Multi-disc, Spring Applied, Hydraulically Released
Load Brake	Rear service brakes Rear service brakes
Note	Anti-Lock Brake System (ABS) optional with CMD package Anti-Lock Brake System (ABS) optional with CMD package

Weight Distributions - Approximate

Front Axle - Empty	47 % 47 %
Rear Axle - Empty	53 % 53 %
Front Axle - Loaded	33 % 33 %
Rear Axle - Loaded	67 % 67 %
Note	Weight distributions optimized with Cat body. Weight distributions optimized with Cat body.

Capacity - HE Body - 100% fill factor

Struck	129-200 m³ (168-261 yd³) 129-200 m³ (168-261 yd³)
Heaped (SAE 2:1)	218-276 m³ (285-361 yd³) 218-276 m³ (285-361 yd³)
Note	Contact your local Cat dealer for body recommendations. Contact your local Cat dealer for body recommendations.

Body Hoists

Type	Twin, two-stage hydraulic cylinders with snubbing valve. Twin, two-stage hydraulic cylinders with snubbing valve.
Pump Flow - High Idle	257.3 gpm 964 L/min
Relief Valve Setting - Raise	3029 psi 20884 kPa
Body Raise Time - High Idle	21 s 21 s
Body Lower Time - Float	22 s 22 s
Body Power Down- High Idle	17.5 s 17.5 s
Note (1)	Twin, two-stage hydraulic cylinders mounted outside main frame; double-acting cylinders in both stages. Twin, two-stage hydraulic cylinders mounted outside main frame; double-acting cylinders in both stages.
Note (2)	Power raise in both stages; power down capability in both stages. Power raise in both stages; power down capability in both stages.
Note (3)	Automatic body-lower modulation reduces impact on frame. Automatic body-lower modulation reduces impact on frame.

Suspension

Type	Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments
Effective Cylinder Stroke - Front	10 in 254 mm
Effective Cylinder Stroke - Rear	5 in 133.35 mm

Cab

Air Conditioning	HFC - 134A refrigerant: 21,600 Btu/h HFC - 134A refrigerant: 21,600 Btu/h
Heater / Defroster	24600 Btu/h 24600 Btu/h
Note	Ambient capabilities down to -15C (5F) for heater/defroster and up to 50C (122F) for air conditioning. Ambient capabilities down to -15C (5F) for heater/defroster and up to 50C (122F) for air conditioning.
ROPS Standards (1)	ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer. ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer.
FOPS Standards	FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer. FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer.

Engine - High Altitude Only

Engine Model	Cat® C175-20 Cat® C175-20
Gross Power SAE J1995:2014	4150 hp 3095 kW
Net Power - SAE J1349:2011	4000 hp 2983 kW
Rated Speed	1750 r/min 1750 r/min
Emissions Rating	Fuel Optimized Fuel Optimized
Bore	6.9 in 175 mm
Stroke	8.7 in 220 mm
Displacement	6469 in³ 106 l
Note 1	Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator. Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator.
Note 2	Additional fuel optimized selectable power rating: 2983 kW / 4,000 hp Additional fuel optimized selectable power rating: 2983 kW / 4,000 hp

Tires

Rims	44" x 63" Rims 44" x 63" Rims
Standard Tires	59/80 R63 59/80 R63
Note (1)	Quick Change Rims optional. Quick Change Rims optional.
Note (2)	Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities. Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities.

Dimensions (Approximate)

Height - Top of ROPS	22.1 ft 6720 mm
Overall Length	51.44 ft 15679 mm
Wheel Base	21.9 ft 6674 mm
Rear Axle - Tail	16.07 ft 4898 mm
Dump Clearance - Empty	5.72 ft 1744 mm
Loading Height - Empty	25.54 ft 7784 mm
Overall Height - Body Raised	48.85 ft 14890 mm
Centerline Front Tire Width	23.06 ft 7028 mm
Front Axle Clearance - Loaded	2.81 ft 855 mm
Overall Canopy Width (with rock deflectors)	33.15 ft 10103 mm
Outside Body/Canopy Width (without rock deflectors)	31.62 ft 9639 mm
Inside Body Width	29.44 ft 8973 mm
Front Canopy Height - Empty	26.01 ft 7928 mm
Rear Axle Clearance - Loaded	2.8 ft 854 mm
Centerline of Rear Dual Tire Width	19.5 ft 5943 mm
Overall Tire Width - Empty	30.27 ft 9226 mm
Overall Length (High Altitude only)	51.87 ft 15810 mm
Note	Dimensions listed includes canopy deflectors Dimensions listed includes canopy deflectors

Sound

Sound Standards

The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008. The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008.

798 AC Standard Equipment

POWER TRAIN

Cat® C175-16 Diesel Engine: 2610 kW (3,500 hp) Fuel Optimized , U.S. EPA Tier 2 equivalent (available for applicable markets)

Cat® C175-16 Diesel Engine: 2610 kW (3,500 hp) U.S. EPA Tier 4 Final / EU Stage V (available for applicable markets)

C175-16 Diesel Engine
– Turbocharging (4) / Aftercooled (ATAAC)
– Centrifugal oil filter
– Self-cleaning oil filter
– Charging Alternator (225 amp), brushless
– Pre-lubrication/engine
– Air cleaner with precleaner (4)
– Multi-point oil pressure sensing
– Exhaust - Muffler, Right Side Exit

Cat C175-20 Diesel Engine (High Altitude Only)
- 3095 kW (4,150 hp) Fuel Optimized (available for applicable markets)
- Centrifugal oil filter
- Self-cleaning oil filter
- Charging Alternator (225 amp), brushless
- Pre-lubrication/engine
- Air cleaner with precleaner (4)
- Multi-point oil pressure sensing
- Exhaust - Muffler, Right Side Exit

Braking system:
– Electric dynamic retarding with blended low speed
– Oil-cooled, Multi-disc (front and rear) - Service, Parking, Secondary
– Load Brake (rear axle only)
– Extended Life Brake Disc Material
– Automatic Retarder Control (ARC)
– Brake Release Motor (towing)

Cat® AC Drivetrain:
– AC generator
– AC induction motors (high-torque)
– IGBT motor control
– Radial retarding grid with AC motor control
– Programmable top speed
– TorqueBoost technology
– Traction control system

Directional Shift Management:
– Body-up reverse neutralizer
– Body-up shift inhibitor
– Reverse shift inhibitor
– Neutral coast inhibitor
– Neutral start inhibitor

Additional Features:
– Rear axle continuous lubrication and filtration
– Rear axle continuous oil cooling

OPERATION AND CONTROLS

Integrated ROPS/FOPS cab, insulated/sound suppressed

Seat, operator, air suspension, adjustable, heated/cooled

Seatbelt, operator, three point

Seat, trainer, air suspension, adjustable

Seatbelt, trainer, two point

Steering wheel, tilt, telescopic, horn

Horn, electric

Directional shift lever

Single Pedal Retarding & oil-cooled brake control

Automatic Retard Control (ARC) toggle switch

Load brake switch

Windshield with tinted/safety glass

Window, electric powered, operator/passenger

Windshield Wipers (2), intermittent control and washer

Visor (2)

Storage rear of seats

Cup holder (2)

Dome courtesy light

Entertainment radio ready with speakers and wiring harnesses

Converter, 12V

12V DC power supply (1)

Mirrors, standard (Left-Flat, Right-Convex)

Fixed access ladder, left hand ground access

Fixed access ladder, right hand round access (High Altitude Only)

HVAC:
– Pressurized, filtered environment
– Air conditioner
– Heater/defroster

Metric or English gauges:
– Speedometer
– Tachometer
– Electric hour meter
– Fuel level
– DEF level (U.S. EPA Tier 4 Final / EU Stage V engines only)
– Hydraulic oil temperature
– Engine coolant temperature

Service & Information:
– Diagnostic connection port
– Electric engine control fault indicator
– Alarm, Park brake / open operator door
– Third party telematics port
– VIMS message center advisor

ELECTRICAL

Audible Alarm, backup

Electrical system, 24V with fuses and breakers

Batteries, 12V (8) 90 amp hour

Ground level Battery charge receptacle

Lighting, signals/service:
– Headlights (4 low beam, 4 high beam), LED
– Headlights (4 low beam, 2 high beam), LED (High Altitude only)
– Backup and marker/hazard, LED
– Directional signals (front and rear), LED
– Front stair access/service deck, LED
– Stop/tail lights, LED
– Engine compartment, LED
– Inverter energy warning lights, LED

Payload indicator, red/green

Payload, digital display

ADDITIONAL FEATURES AND EQUIPMENT

Accumulators (Steering & Brake) – Australian and Canadian certified

Automatic lubrication system

Rotating component guards

Mud Flaps

Tow hooks and pins (front)

Tow pin (rear) (empty truck only)

44 x 63 rims, six position (6)

Fueling:
– 4922 L (1,300 gal) fuel tank (Fuel optimized engines only)
– 4543 L (1,200 gal) fuel tank (U.S. EPA Tier 4 Final / EU Stage V engines only)
– 379 L (100 gallon) DEF tank (U.S. EPA Tier 4 Final / EU Stage V engines only)
– Fuel filter with water separator
– 210 GPM Fast fill fuel system (Left and Right)

Service:
– Engine service platforms (2)
– ANSI or ISO service instructions
– S•O•S℠ sample points (hydraulic oil, engine coolant, engine oil)
– Ground level machine lockout (battery)
– Ground level engine shut-down
– Drivetrain lockout
– Drivetrain lockout at ground level (High Altitude only)
– Engine start lockout
– Auxiliary "buddy" dumping quick connect
– Auxiliary steering quick connect (towing)

CAT® TECHNOLOGY PRODUCTS

Cat® MineStar™ Detect (Radar and Camera) System

Cat® Product Link™ Elite (Cellular)

DUMP BODY

High Efficiency (HE) body, 218-276 m³ (285-361 yd³)
– HE Body Mounting Group
– Rock ejectors (chain)

ANTIFREEZE

Cat Extended Life Coolant (ELC) protects to –35° C (–30° F)

798 AC Optional Equipment

POWER TRAIN

Cat® C175-16 Diesel Engine: 2312 kW (3,100 hp) power setting (Fuel optimized / U.S. EPA Tier 2 equiv. engines only)

Cat C175-20 Diesel Engine (High Alititude only): 2983 kW (4,000 hp) power setting, Fuel Optimized (available for applicable markets)

Body heat exhaust

OPERATION AND CONTROLS

Throttle lock

Timer, engine shutdown

Heated mirrors (Left and Right)

Powered access ladder, left hand ground access

Language monitors: English, Spanish, Italian, Portuguese, Dutch, Norwegian, Swedish, Estonian, Latin, Lithuanian, Slovakian, Slovenian, Greek, Romanian, Russian, Polish, Czech, Hungarian, Icelandic, Finnish, Danish, Thai, Indonesian, Vietnam, Malaysian, Chinese

OPERATIONS AND CONTROLS

Powered access ladder, right hand ground access (High Altitude only)

ELECTRICAL

Lighting, signals/service:
– Fog lights, LED
– Work lights, LED
– Side profile lights, LED
– Dump body marker/stop lights, LED

Retarding indicator light, multi-color, cab exterior

Payload, digital display

ADDITIONAL FEATURES AND EQUIPMENT

Fueling: 300 GPM Fast fill fuel system (Left and Right)

Portable fire extinguisher

Front bumper single-point center tow

Wheel chocks (ANSI and ISO)

44 x 63 rims, quick change (2 quick change, 4 standard)

Service:
– Inverter platform (rear access)
– Service Center, fast-fill

CAT® TECHNOLOGY PRODUCTS

Cat® MineStar™ Detect (Camera Only) System

Cat® Product Link™ Elite (Satellite)

Cat® MineStar™ Health

Cat® MineStar™ Fleet

Cat® MineStar™ Terrain

Cat® MineStar™ Command-Ready

Cat® MineStar™ Command

Cat® Trolley Assist Attachment

DUMP BODY

HE rock box liner

HE canopy rock deflectors

HE rear tire rock deflectors

HE impact liner

Chain and solid bar

Canopy Extension

ANTIFREEZE

Antifreeze/coolant protects to –50° C (–58° F)

Compatible Technology and Services

Leverage Caterpillar connected data and security principles to improve efficiencies, increase productivity and make your business more profitable.

Command

Detect

Edge

Fleet

Health

Cat Command for Hauling

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Cat® MineStar™ Command for hauling takes advantage of the most sophisticated technologies available to deliver a next-generation haulage solution — one that boosts safety, productivity and availability on busy mine sites, especially those in difficult or remote locations. Command provides the fully integrated operation of autonomous mining systems, allowing them to haul more efficiently with near-continuous operation and move more with fewer people on site. Autonomous trucks operate safely around other equipment, light vehicles and personnel. Command trucks respond to calls to the shovel, move into position, haul to dump points and even report for maintenance — all without an operator on board.

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Cat® MineStar™ Command for hauling takes advantage of the most sophisticated technologies available to deliver a next-generation haulage solution — one that boosts safety, productivity and availability on busy mine sites, especially those in difficult or remote locations. Command provides the fully integrated operation of autonomous mining systems, allowing them to haul more efficiently with near-continuous operation and move more with fewer people on site. Autonomous trucks operate safely around other equipment, light vehicles and personnel. Command trucks respond to calls to the shovel, move into position, haul to dump points and even report for maintenance — all without an operator on board.

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Cat MineStar Detect Fatigue

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Fatigued and distracted equipment operators are present on every mine site every day, and the consequences can be costly, even fatal. Cat® MineStar™ Detect can help you identify fatigue and distraction — and address it — in real time. This subscription-based offering combines our industry-leading Driver Safety System technology with risk assessments, expertise, change management training and educational support to help you build a complete fatigue and distraction management program.

To confirm availability and to purchase a subscription contact your Caterpillar dealer. For more information on subscription terms, please visit www.caterpillar.com/en/legal-notices/minestar-software-end-user-agreement.

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Fatigued and distracted equipment operators are present on every mine site every day, and the consequences can be costly, even fatal. Cat® MineStar™ Detect can help you identify fatigue and distraction — and address it — in real time. This subscription-based offering combines our industry-leading Driver Safety System technology with risk assessments, expertise, change management training and educational support to help you build a complete fatigue and distraction management program.

To confirm availability and to purchase a subscription contact your Caterpillar dealer. For more information on subscription terms, please visit www.caterpillar.com/en/legal-notices/minestar-software-end-user-agreement.

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Cat MineStar Edge

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Cat® MineStar Edge™ is a technology platform that delivers more connected, integrated, scalable and intuitive products that extend further up and down the value chain. Edge makes it possible for you to use proven MineStar technologies across your entire mining organization and creates an operational ecosystem that provides visibility to every aspect of your operation. Edge delivers near-real-time access to data that was up to 98% accurate and enables you to make changes in-shift while already knowing the impact those changes will have further down the value chain?

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Cat® MineStar Edge™ is a technology platform that delivers more connected, integrated, scalable and intuitive products that extend further up and down the value chain. Edge makes it possible for you to use proven MineStar technologies across your entire mining organization and creates an operational ecosystem that provides visibility to every aspect of your operation. Edge delivers near-real-time access to data that was up to 98% accurate and enables you to make changes in-shift while already knowing the impact those changes will have further down the value chain?

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Cat Fleet for Surface

Cat® MineStar Fleet is the single best source for fleet management information. An integrated fleet monitoring and management system, it can be used with any machine or system to measure, manage and maximize every facet of an operation, no matter the size or type. Fleet provides real-time visibility to cycle time, payload and other key operational parameters. It monitors machine locations and material movement and provides alerts of misroutes to ensure material is moved to the proper location.

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Cat® MineStar Fleet is the single best source for fleet management information. An integrated fleet monitoring and management system, it can be used with any machine or system to measure, manage and maximize every facet of an operation, no matter the size or type. Fleet provides real-time visibility to cycle time, payload and other key operational parameters. It monitors machine locations and material movement and provides alerts of misroutes to ensure material is moved to the proper location.

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Cat Health

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Through regular monitoring of machine conditions, mines can adopt a more proactive approach to maintenance and repair. Equipment health data is a key contributor to that approach. Data helps mines identify equipment problems long before failure.

Accessing the right data at the right time is critical to improving operational intelligence and machine predictive analysis. Cat® MineStar™ Health helps you meet that need by connecting you to your machines and delivering that important information. The MineStar Health portfolio set consists of Connectivity Enablers that collect, convert and transmit equipment data; and Applications that visualize, analyze and report health equipment data.

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Through regular monitoring of machine conditions, mines can adopt a more proactive approach to maintenance and repair. Equipment health data is a key contributor to that approach. Data helps mines identify equipment problems long before failure.

Accessing the right data at the right time is critical to improving operational intelligence and machine predictive analysis. Cat® MineStar™ Health helps you meet that need by connecting you to your machines and delivering that important information. The MineStar Health portfolio set consists of Connectivity Enablers that collect, convert and transmit equipment data; and Applications that visualize, analyze and report health equipment data.

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798 AC mining truck

798 AC Mining Truck

Updates and Enhancements AC Mining Trucks

The Cat® 798 AC: It Pays to Haul More

Updates and Enhancements AC Mining Trucks

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Off-Highway Trucks

Selected

798 AC

Nominal Rated Payload: 410 ton (US); 372 t
Rated Gross Machine Weight: 1375000 lb; 623690 kg
Gross Power - SAE J1995: 3500 hp; 2610 kW

Off-Highway Trucks

797F

Nominal Rated Payload: 400 ton (US); 363 t
Rated Gross Machine Weight: 1375000 lb; 623690 kg
Gross Power - SAE J1995: 4000 hp; 2983 kW

View Details

Off-Highway Trucks

796 AC

Nominal Rated Payload: 360 ton (US); 327 t
Rated Gross Machine Weight: 1270000 lb; 576072 kg
Gross Power - SAE J1995: 3500 hp; 2610 kW

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Mining Trucks 798 AC

Overview

Hauls More - More Efficiently and Reliably

Benefits

Class-Leading Nominal rated Payload

Up to 18% More Torque

Easier Maintenance — Less Often

Features At A Glance

Product Specifications for 798 AC

Weights - Approximate

Engine

Service Refill Capacities - High Altitude Only

Service Refill Capacities

Steering

AC Drive System

Braking System

Weight Distributions - Approximate

Capacity - HE Body - 100% fill factor

Body Hoists

Suspension

Cab

Engine - High Altitude Only

Tires

Dimensions (Approximate)

Sound

798 AC Standard Equipment

POWER TRAIN

OPERATION AND CONTROLS

ELECTRICAL

ADDITIONAL FEATURES AND EQUIPMENT

CAT® TECHNOLOGY PRODUCTS

DUMP BODY

ANTIFREEZE

798 AC Optional Equipment

POWER TRAIN

OPERATION AND CONTROLS

OPERATIONS AND CONTROLS

ELECTRICAL

ADDITIONAL FEATURES AND EQUIPMENT

CAT® TECHNOLOGY PRODUCTS

DUMP BODY

ANTIFREEZE

Product Specifications for 798 AC

Weights - Approximate

Engine

Service Refill Capacities - High Altitude Only

Service Refill Capacities

Steering

AC Drive System

Braking System

Weight Distributions - Approximate

Capacity - HE Body - 100% fill factor

Body Hoists

Suspension

Cab

Engine - High Altitude Only

Tires

Dimensions (Approximate)

Sound

798 AC Standard Equipment

POWER TRAIN

OPERATION AND CONTROLS

ELECTRICAL

ADDITIONAL FEATURES AND EQUIPMENT

CAT® TECHNOLOGY PRODUCTS

DUMP BODY

ANTIFREEZE

798 AC Optional Equipment

POWER TRAIN

OPERATION AND CONTROLS

OPERATIONS AND CONTROLS

ELECTRICAL

ADDITIONAL FEATURES AND EQUIPMENT

CAT® TECHNOLOGY PRODUCTS

DUMP BODY

ANTIFREEZE

Compatible Technology and Services

Cat Command for Hauling

Cat MineStar Detect Fatigue

Cat MineStar Edge

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