Large Wheel Loaders 988K XE

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Key Specs

Net Power - SAE J1349
538 HP
401 kW
Operating Weight
116362 lb
52781 kg
Bucket Capacities
4.7-13 m3 (6.2-17 yd3)
4.7-13 m3 (6.2-17 yd3)

Overview

MOVE MORE MATERIAL EFFICIENTLY AND AT A LOWER COST

Cat® Large Wheel Loaders are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a lower cost per ton.
Introduced in 1963, the 988 has been the industry leader for over 50 years, built on a legacy of reliability, performance, safety, operator comfort, serviceability, and productivity. The 988K XE brings improved sustainability and maximum efficiency to this machine platform.

Benefits

UP TO 5% MORE PRODUCTIVITY

Cycle time improvements in load & carry applications, along with improved stability and faster maneuvering with an optional load & carry counterweight result in increased productivity

IMPROVED TECHNOLOGY

Boost your productivity with optional technologies like Operator Coaching and new AutoDig features including Tire Slip Prevention, Auto Set Tires and Lift Stall Prevention

ENHANCED OPERATOR EFFICIENCY

Updated cab with quiet steering, easier operator controls and new Go-Pedal helps operators work more productively throughout the day

Product Specifications for 988K XE

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Net Power - SAE J1349 538 HP 401 kW
Engine Model Cat® C18 ™ Cat® C18 ™
Engine Power - ISO 14396 580 HP 432 kW
Gross Power - SAE J1995 588 HP 439 kW
Rated Speed 1,700 rpm 1,700 rpm
Emissions U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014
Peak Power Speed 1,500 rpm 1,500 rpm
Bore 5.7 in 145 mm
Stroke 7.2 in 183 mm
Displacement 1105 in³ 18.1 l
Peak Torque - 1,200 rpm - SAE J1995 2230 ft·lbf 3023 N·m
Torque Rise 58% 58%
Operating Weight 116362 lb 52781 kg
Operating Weight - Standard 116362 lb 52781 kg
Operating Weight - High Lift 119618 lb 54258 kg
Rated Payload - Standard (Quarry Face) 12.5 ton (US) 11.3 t
Rated Payload - Loose Material (Standard) 16 ton (US) 14.5 t
Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3) 4.7-13 m3 (6.2-17 yd3)
Transmission Type Cat switched reluctance electric drive Cat switched reluctance electric drive
Forward 1 (virtual) 4.3 mile/h 7 km/h
Forward 2 (virtual) 7 mile/h 11.3 km/h
Forward 3 (virtual) 13.8 mile/h 22.2 km/h
Forward 4 (virtual) 20 mile/h 32.1 km/h
Reverse 1 (virtual) 4.3 mile/h 7 km/h
Reverse 2 (virtual) 7 mile/h 11.3 km/h
Reverse 3 (virtual) 17.5 mile/h 28.2 km/h
Lift/Tilt System - Circuit EH-Positive Flow Control, Flow Sharing EH-Positive Flow Control, Flow Sharing
Lift/Tilt System - Pump Variable displacement piston Variable displacement piston
Maximum Flow at 1,400-1,600 rpm 153 gal/min 580 l/min
Relief Valve Setting - Lift/Tilt 4757 psi 32800 kPa
Lift Cylinder - Bore 8.7 in 210 mm
Lift Cylinder - Stroke 41.3 in 1050 mm
Tilt Cylinder - Bore 8.7 in 269 mm
Tilt Cylinder - Stroke 27 in 685 mm
Rack Back 4.5 s 4.5 s
Raise 8 s 8 s
Dump 2.2 s 2.2 s
Lower Float Down 3.5 s 3.5 s
Total Hydraulic Cycle Time 18.2 s 18.2 s
Steering System - Circuit Pilot, load sensing Pilot, load sensing
Steering System - Pump Piston, variable displacement Piston, variable displacement
Maximum Flow at 1,400-1,600 rpm 71.3 gal/min 270 l/min
Steering Cut Off Pressure 4351 psi 30000 kPa
Total Steering Angle 86° 86°
Steering Cycle Times - High Idle 3.4 s 3.4 s
Steering Cycle Times - Low Idle 5.6 s 5.6 s
Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes. The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes.
Front Fixed Fixed
Rear Trunnion Trunnion
Oscillation Angle 13° 13°
Brakes ISO 3450:2011 ISO 3450:2011
ROPS/FOPS ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards
Fuel Tank 147 gal (US) 555 l
Cooling System - Jacket Water 30 gal (US) 112 l
Cooling Systems - Power Train 8 gal (US) 30 l
Engine Crankcase 16 gal (US) 60 l
Diesel Exhaust Fluid Tank 8.7 gal (US) 33 l
Transmission 16 gal (US) 60 l
Differential - Final Drives - Front 49 gal (US) 186 l
Differential - Final Drives - Rear 49 gal (US) 186 l
Hydraulic System - Implement/Steering 126 gal (US) 475 l
Note All nonroad Tier 4 Final/Stage V diesel engines are required to use: – The machine has the flexibility to run on either ultra-low-sulfur diesel fuel (ULSD with 15 ppm of sulfur or less). – Cat engines are compatible with the following renewable, alternative, and biodiesel* fuels that reduce greenhouse gases: Up to B20 biodiesel (FAME) ** Up to 100% HVO and GTL renewable fuels * Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. – Cat DEO-ULS™ or oils that meet the Cat ECF-3, API CJ-4, and ACEA E9 specifications are required. – Only use DEF that meets ISO 22241-1 standards. All nonroad Tier 4 Final/Stage V diesel engines are required to use: – The machine has the flexibility to run on either ultra-low-sulfur diesel fuel (ULSD with 15 ppm of sulfur or less). – Cat engines are compatible with the following renewable, alternative, and biodiesel* fuels that reduce greenhouse gases: Up to B20 biodiesel (FAME) ** Up to 100% HVO and GTL renewable fuels * Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. – Cat DEO-ULS™ or oils that meet the Cat ECF-3, API CJ-4, and ACEA E9 specifications are required. – Only use DEF that meets ISO 22241-1 standards.
Operator Sound Level (ISO 6396) 72 dB(A) 72 dB(A)
Machine Sound Level (ISO 6395) 109 dB(A) 109 dB(A)
Note (1) The operator sound pressure level was measured according to the test procedures and conditions specified in ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed. The operator sound pressure level was measured according to the test procedures and conditions specified in ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Note (2) Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment. Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment.
Note (3) The machine sound power level was measured according to the test procedures and conditions specified in ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed. The machine sound power level was measured according to the test procedures and conditions specified in ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Ground to Top of ROPS 13.8 ft 4202 mm
Ground to Top of Exhaust Stacks 14.8 ft 4498 mm
Ground to Top of Hood 10.9 ft 3334 mm
Ground to Bumper Clearance 3.1 ft 933 mm
Rear Axle - Centerline to Bumper 10.5 ft 3187 mm
Front Axle Centerline to Bucket Tip 14 ft 14 mm
Wheel Base 14.9 ft 4550 mm
Maximum Overall Length 39.3 ft 11991 mm
Ground to Lower Hitch Clearance 1.9 ft 568 mm
Ground to Center of Axles 3.2 ft 978 mm
Clearance at Maximum Lift 11.9 ft 3641 mm
B-Pin Height - Maximum Lift 18 ft 5479 mm
Maximum Overall Height - Bucket Raised 24.5 ft 7455 mm
Reach - Maximum Lift 6.5 ft 1981 mm
Note Specs are calculated with 6.9 m3 (9 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height. Specs are calculated with 6.9 m3 (9 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height.
Ground to Top of ROPS 13.8 ft 4202 mm
Ground to Top of Exhaust Stacks 14.8 ft 4498 mm
Ground to Top of Hood 10.9 ft 3334 mm
Ground to Bumper Clearance 3.1 ft 933 mm
Rear Axle - Centerline to Bumper 10.5 ft 3187 mm
Front Axle Centerline to Bucket Tip 15.3 ft 4661 mm
Wheel Base 14.9 ft 4550 mm
Maximum Overall Length 40.7 ft 12398 mm
Ground to Lower Hitch Clearance 1.9 ft 568 mm
Ground to Center of Axles 3.2 ft 978 mm
Clearance at Maximum Lift 13.3 ft 4043 mm
B-Pin Height - Maximum Lift 19.3 ft 5881 mm
Maximum Overall Height - Bucket Raised 25.8 ft 7849 mm
Reach - Maximum Lift 6.8 ft 2062 mm
Note Specs are calculated with 6.9 m3 (9 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height. Specs are calculated with 6.9 m3 (9 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height.
Bucket Capacities 4.7-13 m3 (6.2-17 yd3) 4.7-13 m3 (6.2-17 yd3)

988K XE Standard Equipment

NOTE

  • Standard and optional equipment may vary. Consult your Cat dealer for details.

ELECTRICAL

  • Alarm, back-up
  • Alternator, single 150 amp
  • Batteries, dry
  • Converter, 10/15 amp, 24V to 12V
  • Lighting system (halogen, work lights, access and service platform lighting)
  • Starting and charging system, 24V
  • Starter emergency start receptacle
  • Starter lockout in bumper
  • Transmission lockout in bumper
  • Hazardous voltage lamp

OPERATOR ENVIRONMENT

  • Graphical Information Display, displays real time operating information, performs calibrations and customizes operator settings
  • Air conditioner
  • Cat Vision, rear vision camera system
  • Cab, sound suppressed and pressurized, integrated rollover protective structure (ROPS/FOPS) radio ready for entertainment, includes antenna, speakers and converter (12‑volt 5-amp) and power port
  • Controls, lift and tilt function
  • Heater, defroster
  • Horn, electric
  • Instrumentation, gauges
    – Coolant temperature
    – Engine hour meter
    – Hydraulic oil temperature
    – Power train oil temperature
  • Light, cab, dome
  • Lunchbox, beverage holders
  • CB radio-ready
  • Mirrors, rearview (externally mounted)
  • Rimpull Control System
  • Seat, Cat Comfort Series III, heated and ventilated, air suspension, six-way adjustable
  • Seat belt minder
  • Seat belt, retractable, 76 mm (3 in) wide
  • STIC Control System
  • UV glass
  • Virtual gear indicator
  • Vital Information Management System (VIMS) with Graphical Information Display: External Data Port, Customizable Operator Profiles, Cycle Timer, Integrated Payload Control System
  • Wet-Arm wipers/washers (front and rear)
    – Intermittent front and rear wipers
  • Lights, directional

POWER TRAIN

  • Brakes, oil-cooled, multi-disc, service/secondary
  • Case drain screens
  • Electro hydraulic parking brake
  • Engine, C18 MEUI diesel, turbocharged/aftercooled
  • Ground level engine shutoff
  • Turbine precleaner, engine air intake
  • Radiator, Aluminum Modular Radiator (AMR)
  • Starting aid, ether, automatic
  • Throttle lock, electronic
  • Manual switch and automatic fuel priming
  • Cat Production Measurement ready
  • Cat SR Generator/Pump Drive
  • Cat SR Drive Motor
  • Cat Integrated Powered Electronics
  • Automatic retarding controls

ADDITIONAL EQUIPMENT

  • Automatic bucket lift kickout/positioner
  • Base machine price includes a rim allowance
  • Hydraulically driven demand fan
  • Couplings, Cat O-ring face seals
  • Doors, service access (locking)
  • Ecology drains for engine, radiator, hydraulic tank
  • Fuel tank, 555 L (147 gal)
  • Hitch, drawbar with pin
  • Hoses, Cat XT™
  • Hydraulic, steering and brake filtration/screening system
  • Cat Clean Emission Module
  • Oil sampling valves
  • Premixed 50 percent concentration of extended life coolant with freeze protection to –34° C (–29° F)
  • Rear access to cab and service platform
  • Steering, load sensing
  • Toe kicks
  • Vandalism protection caplocks

988K XE Optional Equipment

NOTE

  • Standard and optional equipment may vary. Consult your Cat dealer for details.

POWER TRAIN

  • –50° C (–58° F) antifreeze
  • Engine oil change system, high speed, Wiggins
  • Engine block heater 120V or 240V
  • High ambient cooling – software
  • Cat Production Measurement
  • Crankcase guard
  • Engine brake, SEA

Other Optional Configurations

  • Aggregate Handler
  • Millyard
  • Load and Carry

OPERATOR ENVIRONMENT

  • Cat Detect, object detection system
  • Cab precleaner
  • AM/FM/CD/MP3 radio
  • Satellite Sirius radio with Bluetooth®
  • LED warning strobe
  • Window pull down visor
  • Handrail mounted mirrors

ADDITIONAL EQUIPMENT

  • Front and rear roading fenders
  • Fast fill fuel system (Shaw-Aero)
  • Cold Weather Starting (extra starter plus two batteries)
  • Aggregate Handler
  • Autodig feature, Tire Slip Prevention
  • Wheel Chocks
  • EZ Clean cooling system
  • Autodig features, Auto Set Tires & Lift Stall Prevention
  • Autolube with Auto shutoff
  • Tire Pressure Monitoring System
  • Load and Carry Counterweight

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