Mining Trucks 785D

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Key Specs

Nominal Rated Payload: 160 ton (US); 145 t

Rated Gross Machine Weight: 550000 lb; 249476 kg

Gross Power - SAE J1995: 1450 hp; 1082 kW

785D
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Overview

High Volume. High Reliability . Lower Costs.

The Cat^® 785 model was Caterpillar’s first entry into the mining industry more than three decades ago and has been a proven performer on sites around the world ever since. The 785D carries on that tradition.
It’s engineered for performance, designed for comfort and built to last. Developed specifically for high production mining applications, the 785D keeps material moving at high volume to lower your cost-per-ton. Rugged construction creates a durable machine, while easy maintenance procedures ensure high reliability and long life with low operating costs.

Benefits

Easy Maintenance

Ensures high reliability and long life with low operating costs.

Durable & Reliable

Rugged construction creates a durable machine with demonstrated reliability and proven performance.

Lower Costs

Thanks to health technologies, features that increase component life and settings to optimize performance.

Features At A Glance

The 785D is powered by the 3512C HD engine, a 12-cylinder, four-stroke design that uses long, effective power strokes for more complete fuel combustion and optimum fuel efficiency.
The 23% net torque rise provides unequaled lugging force during acceleration, on steep grades and in rough underfoot conditions. Torque rise effectively matches transmission shift points for maximum efficiency and fast cycle times.
The mechanical drive powertrain and power shift transmission provide unmatched efficiency and control on steep grades, in poor underfoot conditions and on haul roads with high rolling resistance.
The engine provides additional retarding by running against compression with zero fuel burn on downhill hauls, which increases fuel efficiency.

Access and egress are safer thanks to the 600-mm-wide (24-in-wide) diagonal stairway, slip-resistant surfaces and hand rails, plus an optional powered access ladder.
Superior control is delivered by a patented braking system that provides immediate, fade-resistant braking and retarding.
The 785D is designed for excellent all-around visibility and clear sight lines, enhanced by wide-angle mirrors and the standard Cat MineStar™ Object Detection system, combines radar and camera systems to warn operators about light vehicles or stationary hazards within the immediate vicinity of their machines.
Dumping operations are safer thanks to a body raised indicator and reverse neutralizer when dumping.
Toe guards on the front and side platforms provide protection from slipping and also to prevent any tools or loose items falling from the platform when maintenance or service work is being performed.

Operators enjoy an ergonomic layout, excellent all-around visibility, and controls, levers, switches and gauges that are positioned for ease of use.
The integral, sound-suppressed ROPS/FOPS cab is resiliently mounted to the mainframe to isolate the operator from sound and vibration for a quiet, secure and comfortable ride.
The cab has numerous features that enhance comfort and reduce fatigue, such as an air suspension seat, reduced vibration, air conditioning and sound suppression.

Time spent on regular maintenance procedures is reduce with easy access to daily service points and major components; ground-level access to tanks, filters, drains and engine shutdown; a maintenance platform that provides access to the engine engine, steering hydraulic tank and battery compartment; and an optional fast-fill service center, which enables high-speed fuel and oil exchange.
Enhanced serviceability and 500-hour service intervals are designed to increase machine availability and productivity.
Electric connectors are sealed to lock out dust and moisture, harnesses are braided for protection, and wires are color- coded for easy diagnosis and repair.
The VIMS onboard diagnostic systems continuously monitor all critical machine functions and components to help locate faults quickly for faster repair.

The 785D frame uses a box-section design, incorporating two forgings and 24 castings in high-stress areas with deep penetrating and continuous wrap-around welds to resist damage from twisting loads without adding extra weight. The mild steel frame provides flexibility, durability and resistance to impact loads.
Wheel Stations offer improved durability, which results in less frequent replacement for higher uptime and less unscheduled maintenance.
Component life is enhanced thanks to the standard rear-axle continuous filtration feature. Cleaner oil helps promote lubrication that leads to longer life.
Uptime is improved thanks to planned component replacement intervals that target up to a 20,000 SMU for the engine, plus component commonality with proven 3500 HD engines
The frame, powertrain, engine and components are built to be rebuilt — delivering multiple lives of like-new performance at a fraction-of-new price.

Cat bodies are the best choice for the 785D. They’re designed to be an integral part of the entire vehicle system, ensuring you achieve maximum chassis life.
The High Performance (HP) body features a lightweight, simplified and durable design that provides complete front machine coverage and extended overhead protection.
Available in several sizes, the MSD II body is ideal for mature mines with good operational and maintenance practices. It can be lined or unlined, with a site-specific body designed to maximize performance.
Intended for tough applications including greenfield sites and contracting mines, the Dual Slope body provides excellent load retention, maintains a low center of gravity with optimum load distribution and reduces shock loading.
The specialty combination body for coal and coal overburden accommodates light density material while maintaining payload potential.

We’ve designed the 785D with a number of enhancements that lessen its impact on the environment. Features like engine oil renewal systems and continuous rear axle filtration decrease the amount of waste contributed to the environment.
The engine provides additional retarding by running against compression on downhill hauls. During retarding applications, the engine ECM does not inject fuel into the cylinders for exceptional fuel economy.
We continue to research alternative energy sources such as biofuels and a liquefied natural gas-supplied Dynamic Gas Blending solution, and we’re implementing power options like electrification and trolley to find new ways to reduce emissions.
Cat engines are compatible with diesel fuel blended with lower-carbon intensity fuels such as biodiesel FAME (fatty acid methyl ester). They are also compatible with renewable fuels such as HVO (Hydrotreated Vegetable Oil) and GTL (Gasto-Liquid) alternative fuels that are drop-in replacements for diesel. HVO and GTL are acceptable for use in all Cat engines at any blend level and up to 100%.
By rebuilding machines and components, the Cat Rebuild and Cat Reman programs preserve raw materials, conserve energy and reduce emissions.

MineStar Fleet is a fleet monitoring system that can be used to measure, manage and maximize the overall hauling operation.
The MineStar Detect in-cab Driver Safety System intervenes when it detects fatigue or distraction
Machine health and condition monitoring solutions enable a proactive approach to maintenance.

Specifications Standard Equipment Optional Equipment

Product Specifications for 785D

Engine

Gross Power - SAE J1995	1450 hp 1082 kW
Engine Model	Cat® 3512C HD-EUI Cat® 3512C HD-EUI
Bore	6.7 in 170 mm
Stroke	8.4 in 215 mm
Displacement	3573.6 in³ 58.56 l
Emissions	Fuel Optimized Fuel Optimized

Weights - Approximate

Nominal Rated Payload	160 ton (US) 145 t
Rated Gross Machine Weight	550000 lb 249476 kg
Chassis Weight	184791 lb 83820 kg
Body Weight Range	HP (144 cyd): 20 917 kg (46,114 lb); HP Coal (192 cyd): 21 948 kg (48,387 lb); X body: 25 091 kg (55,316 lb); Dual Slope: 23 538 kg (51,892 lb); MSD II: 21 188 kg (46,712 lb); Gateless Coal (183 cyd): 24 019 kg (52,952 lb); Gateless Coal (217 cyd): 25 066 kg (55,261 lb); HP (144 cyd): 20 917 kg (46,114 lb); HP Coal (192 cyd): 21 948 kg (48,387 lb); X body: 25 091 kg (55,316 lb); Dual Slope: 23 538 kg (51,892 lb); MSD II: 21 188 kg (46,712 lb); Gateless Coal (183 cyd): 24 019 kg (52,952 lb); Gateless Coal (217 cyd): 25 066 kg (55,261 lb);

Transmission

Forward - 1	7.5 mile/h 12.1 km/h
Forward - 2	10.2 mile/h 16.3 km/h
Forward - 3	13.8 mile/h 22.2 km/h
Forward - 4	18.6 mile/h 29.9 km/h
Forward - 5	25.2 mile/h 40.6 km/h
Forward - 6	34 mile/h 54.8 km/h
Reverse	6.8 mile/h 11 km/h
Top Speed - Loaded	34 mile/h 54.8 km/h

Final Drives

Note	Double reduction. planetary with full floating axles. Double reduction. planetary with full floating axles.
Differential Ratio	2.10:1 2.10:1
Planetary Ratio	10.83:1 10.83:1
Total Reduction Ratio	22.75:1 22.75:1

Suspension

Effective Cylinder Stroke - Front	12.6 in 320 mm
Effective Cylinder Stroke - Rear	6.5 in 165 mm
Rear axle - Oscillation	Â±5.4 degrees Â±5.4 degrees

Brakes

Brake Surface - Front	9497 in² 61269 cm²
Brake Surface - Rear	13908 in² 89727 cm²
Standards	ISO 3450:2011 ISO 3450:2011

Body Hoists

Note (1)	Twin, two-stage hydraulic cylinders with snubbing valve Twin, two-stage hydraulic cylinders with snubbing valve
Pump Flow - High Idle	198 gal/min 750 l/min
Relief Valve Setting - Raise	2500 psi 17238 kPa
Body Raise Time - High Idle	15.2 s 15.2 s
Body Lower Time - High Idle	15.9 s 15.9 s
Body Lower Time - Float	16.2 s 16.2 s
Body Power Down - High Idle	15.9 s 15.9 s
Note (2)	Power raise in both stages; power down in second stage. Power raise in both stages; power down in second stage.

Body

Note (1)

HP Body, Low Volume 85m3 (111 yd3); HP Body, Standard Volume 110m3 (143 yd3); HP Body, High Volume – Coal 147m3 (192 yd3); MSD II Body, Standard (SAE 2:1) 99 m3 (130 yd3); X Body, Standard (SAE 2:1) 85 m3 (111 yd3); Dual Slope Body, Standard (SAE 2:1) 78 m3 (102 yd3); Coal Body Gateless, Standard (SAE 2:1) 166 m3 (217 yd3); Coal Body Gateless, Standard (SAE 2:1) 183 m3 (183 yd3) HP Body, Low Volume 85m3 (111 yd3); HP Body, Standard Volume 110m3 (143 yd3); HP Body, High Volume – Coal 147m3 (192 yd3); MSD II Body, Standard (SAE 2:1) 99 m3 (130 yd3); X Body, Standard (SAE 2:1) 85 m3 (111 yd3); Dual Slope Body, Standard (SAE 2:1) 78 m3 (102 yd3); Coal Body Gateless, Standard (SAE 2:1) 166 m3 (217 yd3); Coal Body Gateless, Standard (SAE 2:1) 183 m3 (183 yd3)

Note (2)

Refer to the Cat Mining Trucks Payload Management Guidelines AEXQ0250 for maximum gross machine weight limitations Refer to the Cat Mining Trucks Payload Management Guidelines AEXQ0250 for maximum gross machine weight limitations

Steering

Steer Angle	31 ° 31 °
Turning Diameter - Front	97.7 ft 29.8 m
Steering Standards	ISO 5010:2019 ISO 5010:2019

Weight Distributions - Approximate

Front Axle - Empty	47.50% 47.50%
Rear Axle - Empty	52.50% 52.50%
Front Axle - Loaded	32.60% 32.60%
Note	Weight distributions optimized with Cat body. Weight distributions optimized with Cat body.

Service Refill Capacities

Fuel Tank - Standard	500 gal (US) 1893 l
Cooling System	129 gal (US) 490 l
Crankcase	54 gal (US) 204 l
Differential - Final Drives	171 gal (US) 650 l
Steering Tank	24 gal (US) 90 l
Steering System - Including Tank	31 gal (US) 117 l
Brake/Hoist Hydraulic Tank	89 gal (US) 337 l
Fuel Tank - Optional	600 gal (US) 2498 l
Brake Hoist System - Includes Tank	169 gal (US) 641 l
Torque Converter/Transmission System - Including Sump	65.51 gal (US) 248 l
Front Wheels - Each	3 gal (US) 13.5 l

Cab

Heater / Defroster	10.1 MW·h 34462 Btu/kWh
Air Conditioning	6.9 kW (23,543 BTU/hr) 6.9 kW (23,543 BTU/hr)
ROPS Standards (1)	ISO 3471:2008 and ISO13459:2012 ISO 3471:2008 and ISO13459:2012
FOPS Standards	ISO 3449:2005 Level II and ISO 13459:2012 Level II ISO 3449:2005 Level II and ISO 13459:2012 Level II

Sound

Sound Standards	The dynamic operator sound pressure levels are measured according to work cycle procedures specified in ISO 6396:2008 is 80 dB(A). The dynamic operator sound pressure levels are measured according to work cycle procedures specified in ISO 6396:2008 is 80 dB(A).
Sound Standards (1)	The dynamic exterior sound power level for the standard machine is tested using ISO 6395:2008 procedures is 121 dB(A). The dynamic exterior sound power level for the standard machine is tested using ISO 6395:2008 procedures is 121 dB(A).
Sound Standards (2)	Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment. Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment.

Tires and Rims

Note 1

Standard Tire 33.00-R51 (E3 and E4) Standard Tire 33.00-R51 (E3 and E4)

Note 2

Quick Change Rims optional. Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and Tonne Kilometers Per Hour (TKPH) Ton-Miles Per Hour (TMPH) capabilities. Quick Change Rims optional. Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and Tonne Kilometers Per Hour (TKPH) Ton-Miles Per Hour (TMPH) capabilities.

Braking System

Service Brakes	Four corner, Wet multi disc, oil cooled, air over hydraulic actuated Four corner, Wet multi disc, oil cooled, air over hydraulic actuated
Front Wet Disc Brake Surface Area	9497 in³ 61269 cm³
Rear - Wet Disc Brake Surface Area	13908 in³ 89727 cm³
Standards	ISO 3450:2011 ISO 3450:2011
Parking Brakes	Four-corner, wet multi disc, Spring applied, Hydraulically Released Four-corner, wet multi disc, Spring applied, Hydraulically Released

Dimensions

Height - Top of ROPS	18.2 ft 5560 mm
Overall Length	40.4 ft 12310 m
Wheel Base	17 ft 5180 mm
Rear Axle - Tail	15.4 ft 4690 mm
Ground Clearance	3.8 ft 1165 mm
Dump Clearance	4.5 ft 1365 mm
Loading Height - Empty	18.4 ft 5615 mm
Overall Height - Body Raised	39 ft 11895 mm
Centerline Front Tire Width	16 ft 4870 mm
Engine Guard Clearance	3.3 ft 1000 mm
Overall Canopy Width	24.8 ft 7560 mm
Outside Body Width	19.9 ft 6076 mm
Inside Body Width	19.9 ft 6060 mm
Front Canopy Height	19.3 ft 5880 mm
Rear Axle - Clearance	3.2 ft 980 mm
Centerline of Rear Dual Tire Width	14.1 ft 4285 mm
Overall Tire Width	20.6 ft 6265 mm

Dimensions (Approximate)

Height - Top of ROPS	18.1 ft 5530 mm
Overall Length	41.1 ft 12520 mm
Wheel Base	17 ft 5180 mm
Rear Axle - Tail	12.4 ft 3780 mm
Ground Clearance	3.8 in 1165 mm
Dump Clearance	4.2 ft 1275 mm
Loading Height - Empty	16 ft 4890 mm
Overall Height - Body Raised	38.9 ft 11860 mm
Centerline Front Tire Width	16 ft 4870 mm
Engine Guard Clearance	3.4 ft 1045 mm
Overall Canopy Width	25.1 ft 7660 mm
Outside Body Width	20 ft 6090 mm
Inside Body Width	19.2 ft 5850 mm
Front Canopy Height	18.1 ft 5530 mm
Rear Axle - Clearance	980 mm 3.2 ft
Centerline of Rear Dual Tire Width	14.1 ft 4285 mm
Overall Tire Width	20.6 ft 6265 mm

Dimensions (All dimensions are approximate. MSD II Body, 33R51 tires, unloaded machine.)

Height - Top of ROPS	18.4 ft 5610 mm
Overall Length	41.6 ft 12685 mm
Wheel Base	17 ft 5180 mm
Rear Axle - Tail	15.1 ft 4610 mm
Ground Clearance	3.8 ft 1165 mm
Dump Clearance	3.7 ft 1125 mm
Loading Height - Empty	17.4 ft 5300 mm
Overall Height - Body Raised	38.7 ft 11800 mm
Centerline Front Tire Width	16 ft 4870 mm
Engine Guard Clearance	3.4 ft 1045 mm
Overall Canopy Width	24.8 ft 7560 mm
Outside Body Width	20.5 ft 6250 mm
Inside Body Width	19.8 ft 6020 mm
Front Canopy Height	19.3 ft 5890 mm
Rear Axle - Clearance	3.2 ft 980 mm
Centerline of Rear Dual Tire Width	14.1 ft 4285 mm
Overall Tire Width	20.6 ft 6265 mm

785D Standard Equipment

POWERTRAIN

Engine, 3512C 1450 hp, Fuel optimized

Diesel engine/turbocharged/aftercooled

Ground level engine shutdown

Ether starting aid (automatic)

Aftercooler

Elevated low idle control

Automatic starter protection

Multi-point oil pressure sensing

Muffler

Fan, conventional drive

Air start

Engine idle shutdown

BRAKING SYSTEM

Brake release motor (towing)

Oil-cooled, wet multi-disc (front and rear)/(service, resistive braking, parking, secondary)

Automatic resistive braking control

Engine overspeed protection

Extended life brake disc material

TRANSMISSION

6-speed, automatic powershift with electronic Transmission Chassis Control (TCC)

Controlled throttle shifting

Individual clutch modulation

Body-up shift inhibitor

Directional shift management

Downshift/reverse shift inhibitor

Oil level sensor

Neutral start switch/coast inhibitor

Body-up reverse neutralizer

Programmable top gear

Lock-up torque converter

Rear axle continuous lubrication/filtration

ELECTRICAL

Back up alarm

Alternator 105 amp

Batteries, 12V (2), 93 amp-hour

Converter, 12V electrical

Electrical system, 24V, 15 amp

Led lighting system:
– Backup and hazard lights
– Directional signals, front and rear
– Engine compartment lights
– External payload lights
– Headlights and fog lights
– Lo-hi beam selector
– Ladder light and service deck lights
– Left-hand ladder/service deck
– Stop/tail lights

Vehicle Information Management Systems (VIMS)

VIMS, blue light

Payload indicator lights

INFORMATION MANAGEMENT

Road Analysis Control (RAC)

CAB

Standard Cab
– Deluxe operator seat
– Basic companion seat
– Payload indicator lamps
– Retractable windshield visor

Air conditioner

Auxiliary power connection/cigarette lighter

Diagnostic connection port

Dome courtesy light

Entertainment radio ready
– 5-amp converter, speakers, antenna, and wiring

Air cleaner service indicator

Gauge panel: Air pressure, Brake oil temperature, Engine coolant temperature,

Fuel level

Electric hour meter

Electric engine control fault indicator

Mirrors, right and left

Speedometer and Tachometer

Supplemental steering (automatic)

Traction control system

Transmission gear indicator

Vital Info Management System (VIMS)

VIMS message center w/universal gauge and keypad

Heater/defroster (11 070 kCal/43,930 BTU)

Horn

Hoist, body control (electric)

ROPS cab, insulated/sound suppressed

Seatbelt for operator, park brake safety; two-point seatbelt for trainer/passenger

Stairway and walkway access, 600 mm (24 in)

Steering wheel, tilt, padded, telescopic

Window, operator, electric powered

Windshield, wiper, intermittent control, and washer

Prohibit access handrail – rear cab

OBJECT DETECTION SYSTEM

Radar and camera

TECHNOLOGY PRODUCTS

Product link™ cellular

SAFETY AND SECURITY

Ground level VIMS data port

Ground level battery disconnect

FUEL SYSTEMS

Fast fill fuel system

1893 L (500 gallon) capacity fuel tank and fast fill system

Fuel filter basic screen

FLUIDS

Antifreeze protection to –50º C (–58º F)

ACCESS

Fixed ladder

CHASSIS

Mirror heated

Driveline guard

SERVICE

Quick connect fitting for engine oil

Grease injector

Dual [LM2] [TS3] dryer for compressed air system

Auto lube

Auxiliary steering quick connect (towing)

Auxiliary "buddy" dump quick connect

BODIES AND ACCESSORIES

Rock ejectors

785D Optional Equipment

POWERTRAIN

Engine, 3512C, 1450 hp, U.S EPA Tier 2 equivalent

Pre-lube

Filtration with oil cooler

Oil renewal system

Muffler, extended exhaust

Exhaust system to heat body

Fan, variable speed, rockford for use in freezing weather operations

Electric start

ELECTRICAL

Payload digital display

CAB

Deluxe cab
– Includes the standard cab features plus:
– Premium plus operator seat
– Deluxe companion seat
– External payload digital display monitors
– Cab cleanout vacuum
– Operator footrest

OBJECT DETECTION SYSTEM

Radar and camera, alternate

Camera only (radar ready)

Camera, alternate

Omission, camera and radar

TECHNOLOGY PRODUCTS

Product link satellite

SAFETY AND SECURITY

Working at heights handrail

Working at heights package

Working at heights service

Fire extinguisher, portable

FUEL SYSTEMS

2498 L (660 gallon) capacity fuel tank and fast fill system

RIMS AND WHEELS

Rims Mounting Group

33R51 standard rim

33R51 quick change rim

Rim diffuser

Hub odometer

Wheel chocks

Brake wear indicator

33R51 standard rim

MUD GUARD

Mud guards for standard hydraulic and fuel tank

Mud guards for standard hydraulic and large fuel tank

ACCESS

Powered staircase

CHASSIS

Mirror wide and heated

COLD WEATHER

240V engine coolant and oil heater

BODIES AND ACCESSORIES

HP Body

MSD II Body

Dual Slope Body

Gateless Coal Body

X Body

Side Extensions

Tail Wraparound

Liner for base only

Liner for entire body

Rock guard for dual slope body

Product Specifications for 785D

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Engine

Gross Power - SAE J1995	1450 hp 1082 kW
Engine Model	Cat® 3512C HD-EUI Cat® 3512C HD-EUI
Bore	6.7 in 170 mm
Stroke	8.4 in 215 mm
Displacement	3573.6 in³ 58.56 l
Emissions	Fuel Optimized Fuel Optimized

Weights - Approximate

Nominal Rated Payload	160 ton (US) 145 t
Rated Gross Machine Weight	550000 lb 249476 kg
Chassis Weight	184791 lb 83820 kg
Body Weight Range	HP (144 cyd): 20 917 kg (46,114 lb); HP Coal (192 cyd): 21 948 kg (48,387 lb); X body: 25 091 kg (55,316 lb); Dual Slope: 23 538 kg (51,892 lb); MSD II: 21 188 kg (46,712 lb); Gateless Coal (183 cyd): 24 019 kg (52,952 lb); Gateless Coal (217 cyd): 25 066 kg (55,261 lb); HP (144 cyd): 20 917 kg (46,114 lb); HP Coal (192 cyd): 21 948 kg (48,387 lb); X body: 25 091 kg (55,316 lb); Dual Slope: 23 538 kg (51,892 lb); MSD II: 21 188 kg (46,712 lb); Gateless Coal (183 cyd): 24 019 kg (52,952 lb); Gateless Coal (217 cyd): 25 066 kg (55,261 lb);

Transmission

Forward - 1	7.5 mile/h 12.1 km/h
Forward - 2	10.2 mile/h 16.3 km/h
Forward - 3	13.8 mile/h 22.2 km/h
Forward - 4	18.6 mile/h 29.9 km/h
Forward - 5	25.2 mile/h 40.6 km/h
Forward - 6	34 mile/h 54.8 km/h
Reverse	6.8 mile/h 11 km/h
Top Speed - Loaded	34 mile/h 54.8 km/h

Final Drives

Note	Double reduction. planetary with full floating axles. Double reduction. planetary with full floating axles.
Differential Ratio	2.10:1 2.10:1
Planetary Ratio	10.83:1 10.83:1
Total Reduction Ratio	22.75:1 22.75:1

Suspension

Effective Cylinder Stroke - Front	12.6 in 320 mm
Effective Cylinder Stroke - Rear	6.5 in 165 mm
Rear axle - Oscillation	Â±5.4 degrees Â±5.4 degrees

Brakes

Brake Surface - Front	9497 in² 61269 cm²
Brake Surface - Rear	13908 in² 89727 cm²
Standards	ISO 3450:2011 ISO 3450:2011

Body Hoists

Note (1)	Twin, two-stage hydraulic cylinders with snubbing valve Twin, two-stage hydraulic cylinders with snubbing valve
Pump Flow - High Idle	198 gal/min 750 l/min
Relief Valve Setting - Raise	2500 psi 17238 kPa
Body Raise Time - High Idle	15.2 s 15.2 s
Body Lower Time - High Idle	15.9 s 15.9 s
Body Lower Time - Float	16.2 s 16.2 s
Body Power Down - High Idle	15.9 s 15.9 s
Note (2)	Power raise in both stages; power down in second stage. Power raise in both stages; power down in second stage.

Body

Note (1)

Note (2)

Steering

Steer Angle	31 ° 31 °
Turning Diameter - Front	97.7 ft 29.8 m
Steering Standards	ISO 5010:2019 ISO 5010:2019

Weight Distributions - Approximate

Front Axle - Empty	47.50% 47.50%
Rear Axle - Empty	52.50% 52.50%
Front Axle - Loaded	32.60% 32.60%
Note	Weight distributions optimized with Cat body. Weight distributions optimized with Cat body.

Service Refill Capacities

Fuel Tank - Standard	500 gal (US) 1893 l
Cooling System	129 gal (US) 490 l
Crankcase	54 gal (US) 204 l
Differential - Final Drives	171 gal (US) 650 l
Steering Tank	24 gal (US) 90 l
Steering System - Including Tank	31 gal (US) 117 l
Brake/Hoist Hydraulic Tank	89 gal (US) 337 l
Fuel Tank - Optional	600 gal (US) 2498 l
Brake Hoist System - Includes Tank	169 gal (US) 641 l
Torque Converter/Transmission System - Including Sump	65.51 gal (US) 248 l
Front Wheels - Each	3 gal (US) 13.5 l

Cab

Heater / Defroster	10.1 MW·h 34462 Btu/kWh
Air Conditioning	6.9 kW (23,543 BTU/hr) 6.9 kW (23,543 BTU/hr)
ROPS Standards (1)	ISO 3471:2008 and ISO13459:2012 ISO 3471:2008 and ISO13459:2012
FOPS Standards	ISO 3449:2005 Level II and ISO 13459:2012 Level II ISO 3449:2005 Level II and ISO 13459:2012 Level II

Sound

Sound Standards	The dynamic operator sound pressure levels are measured according to work cycle procedures specified in ISO 6396:2008 is 80 dB(A). The dynamic operator sound pressure levels are measured according to work cycle procedures specified in ISO 6396:2008 is 80 dB(A).
Sound Standards (1)	The dynamic exterior sound power level for the standard machine is tested using ISO 6395:2008 procedures is 121 dB(A). The dynamic exterior sound power level for the standard machine is tested using ISO 6395:2008 procedures is 121 dB(A).
Sound Standards (2)	Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment. Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment.

Tires and Rims

Note 1

Standard Tire 33.00-R51 (E3 and E4) Standard Tire 33.00-R51 (E3 and E4)

Note 2

Braking System

Service Brakes	Four corner, Wet multi disc, oil cooled, air over hydraulic actuated Four corner, Wet multi disc, oil cooled, air over hydraulic actuated
Front Wet Disc Brake Surface Area	9497 in³ 61269 cm³
Rear - Wet Disc Brake Surface Area	13908 in³ 89727 cm³
Standards	ISO 3450:2011 ISO 3450:2011
Parking Brakes	Four-corner, wet multi disc, Spring applied, Hydraulically Released Four-corner, wet multi disc, Spring applied, Hydraulically Released

Dimensions

Height - Top of ROPS	18.2 ft 5560 mm
Overall Length	40.4 ft 12310 m
Wheel Base	17 ft 5180 mm
Rear Axle - Tail	15.4 ft 4690 mm
Ground Clearance	3.8 ft 1165 mm
Dump Clearance	4.5 ft 1365 mm
Loading Height - Empty	18.4 ft 5615 mm
Overall Height - Body Raised	39 ft 11895 mm
Centerline Front Tire Width	16 ft 4870 mm
Engine Guard Clearance	3.3 ft 1000 mm
Overall Canopy Width	24.8 ft 7560 mm
Outside Body Width	19.9 ft 6076 mm
Inside Body Width	19.9 ft 6060 mm
Front Canopy Height	19.3 ft 5880 mm
Rear Axle - Clearance	3.2 ft 980 mm
Centerline of Rear Dual Tire Width	14.1 ft 4285 mm
Overall Tire Width	20.6 ft 6265 mm

Dimensions (Approximate)

Height - Top of ROPS	18.1 ft 5530 mm
Overall Length	41.1 ft 12520 mm
Wheel Base	17 ft 5180 mm
Rear Axle - Tail	12.4 ft 3780 mm
Ground Clearance	3.8 in 1165 mm
Dump Clearance	4.2 ft 1275 mm
Loading Height - Empty	16 ft 4890 mm
Overall Height - Body Raised	38.9 ft 11860 mm
Centerline Front Tire Width	16 ft 4870 mm
Engine Guard Clearance	3.4 ft 1045 mm
Overall Canopy Width	25.1 ft 7660 mm
Outside Body Width	20 ft 6090 mm
Inside Body Width	19.2 ft 5850 mm
Front Canopy Height	18.1 ft 5530 mm
Rear Axle - Clearance	980 mm 3.2 ft
Centerline of Rear Dual Tire Width	14.1 ft 4285 mm
Overall Tire Width	20.6 ft 6265 mm

Dimensions (All dimensions are approximate. MSD II Body, 33R51 tires, unloaded machine.)

Height - Top of ROPS	18.4 ft 5610 mm
Overall Length	41.6 ft 12685 mm
Wheel Base	17 ft 5180 mm
Rear Axle - Tail	15.1 ft 4610 mm
Ground Clearance	3.8 ft 1165 mm
Dump Clearance	3.7 ft 1125 mm
Loading Height - Empty	17.4 ft 5300 mm
Overall Height - Body Raised	38.7 ft 11800 mm
Centerline Front Tire Width	16 ft 4870 mm
Engine Guard Clearance	3.4 ft 1045 mm
Overall Canopy Width	24.8 ft 7560 mm
Outside Body Width	20.5 ft 6250 mm
Inside Body Width	19.8 ft 6020 mm
Front Canopy Height	19.3 ft 5890 mm
Rear Axle - Clearance	3.2 ft 980 mm
Centerline of Rear Dual Tire Width	14.1 ft 4285 mm
Overall Tire Width	20.6 ft 6265 mm

785D Standard Equipment

POWERTRAIN

Engine, 3512C 1450 hp, Fuel optimized

Diesel engine/turbocharged/aftercooled

Ground level engine shutdown

Ether starting aid (automatic)

Aftercooler

Elevated low idle control

Automatic starter protection

Multi-point oil pressure sensing

Muffler

Fan, conventional drive

Air start

Engine idle shutdown

BRAKING SYSTEM

Brake release motor (towing)

Oil-cooled, wet multi-disc (front and rear)/(service, resistive braking, parking, secondary)

Automatic resistive braking control

Engine overspeed protection

Extended life brake disc material

TRANSMISSION

6-speed, automatic powershift with electronic Transmission Chassis Control (TCC)

Controlled throttle shifting

Individual clutch modulation

Body-up shift inhibitor

Directional shift management

Downshift/reverse shift inhibitor

Oil level sensor

Neutral start switch/coast inhibitor

Body-up reverse neutralizer

Programmable top gear

Lock-up torque converter

Rear axle continuous lubrication/filtration

ELECTRICAL

Back up alarm

Alternator 105 amp

Batteries, 12V (2), 93 amp-hour

Converter, 12V electrical

Electrical system, 24V, 15 amp

Led lighting system:
– Backup and hazard lights
– Directional signals, front and rear
– Engine compartment lights
– External payload lights
– Headlights and fog lights
– Lo-hi beam selector
– Ladder light and service deck lights
– Left-hand ladder/service deck
– Stop/tail lights

Vehicle Information Management Systems (VIMS)

VIMS, blue light

Payload indicator lights

INFORMATION MANAGEMENT

Road Analysis Control (RAC)

CAB

Standard Cab
– Deluxe operator seat
– Basic companion seat
– Payload indicator lamps
– Retractable windshield visor

Air conditioner

Auxiliary power connection/cigarette lighter

Diagnostic connection port

Dome courtesy light

Entertainment radio ready
– 5-amp converter, speakers, antenna, and wiring

Air cleaner service indicator

Gauge panel: Air pressure, Brake oil temperature, Engine coolant temperature,

Fuel level

Electric hour meter

Electric engine control fault indicator

Mirrors, right and left

Speedometer and Tachometer

Supplemental steering (automatic)

Traction control system

Transmission gear indicator

Vital Info Management System (VIMS)

VIMS message center w/universal gauge and keypad

Heater/defroster (11 070 kCal/43,930 BTU)

Horn

Hoist, body control (electric)

ROPS cab, insulated/sound suppressed

Seatbelt for operator, park brake safety; two-point seatbelt for trainer/passenger

Stairway and walkway access, 600 mm (24 in)

Steering wheel, tilt, padded, telescopic

Window, operator, electric powered

Windshield, wiper, intermittent control, and washer

Prohibit access handrail – rear cab

OBJECT DETECTION SYSTEM

Radar and camera

TECHNOLOGY PRODUCTS

Product link™ cellular

SAFETY AND SECURITY

Ground level VIMS data port

Ground level battery disconnect

FUEL SYSTEMS

Fast fill fuel system

1893 L (500 gallon) capacity fuel tank and fast fill system

Fuel filter basic screen

FLUIDS

Antifreeze protection to –50º C (–58º F)

ACCESS

Fixed ladder

CHASSIS

Mirror heated

Driveline guard

SERVICE

Quick connect fitting for engine oil

Grease injector

Dual [LM2] [TS3] dryer for compressed air system

Auto lube

Auxiliary steering quick connect (towing)

Auxiliary "buddy" dump quick connect

BODIES AND ACCESSORIES

Rock ejectors

785D Optional Equipment

POWERTRAIN

Engine, 3512C, 1450 hp, U.S EPA Tier 2 equivalent

Pre-lube

Filtration with oil cooler

Oil renewal system

Muffler, extended exhaust

Exhaust system to heat body

Fan, variable speed, rockford for use in freezing weather operations

Electric start

ELECTRICAL

Payload digital display

CAB

Deluxe cab
– Includes the standard cab features plus:
– Premium plus operator seat
– Deluxe companion seat
– External payload digital display monitors
– Cab cleanout vacuum
– Operator footrest

OBJECT DETECTION SYSTEM

Radar and camera, alternate

Camera only (radar ready)

Camera, alternate

Omission, camera and radar

TECHNOLOGY PRODUCTS

Product link satellite

SAFETY AND SECURITY

Working at heights handrail

Working at heights package

Working at heights service

Fire extinguisher, portable

FUEL SYSTEMS

2498 L (660 gallon) capacity fuel tank and fast fill system

RIMS AND WHEELS

Rims Mounting Group

33R51 standard rim

33R51 quick change rim

Rim diffuser

Hub odometer

Wheel chocks

Brake wear indicator

33R51 standard rim

MUD GUARD

Mud guards for standard hydraulic and fuel tank

Mud guards for standard hydraulic and large fuel tank

ACCESS

Powered staircase

CHASSIS

Mirror wide and heated

COLD WEATHER

240V engine coolant and oil heater

BODIES AND ACCESSORIES

HP Body

MSD II Body

Dual Slope Body

Gateless Coal Body

X Body

Side Extensions

Tail Wraparound

Liner for base only

Liner for entire body

Rock guard for dual slope body

Compatible Technology and Services

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

Command

Fleet

Health

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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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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.

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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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