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988K Wheel Loader

988K Wheel Loader

The industry leaderā€”made better

More Comfort ā€“ More Performance ā€“ More Versatility

  • UP TO 41% BETTER FUEL EFFICIENCY

    Utilizing Economy Mode helps save on fuel all while maintaining productivity

  • UP TO 10% LOWER MAINTENANCE COST

    Make regular maintenance more convenient with grouped service points

  • UP TO 10% MORE PRODUCTIVITY

    Deliver more productivity in most truck loading applications while using performance series buckets with increased capacities

  • UP TO 19% LESS CO2 EMISSIONS

    The 988K emits up to 19% less CO2 than the previous 988H.

Engine

Bore 5.7 in
Displacement 1105 inĀ³
Emissions U.S. EPA Tier 4 Final/EU Stage V OR Tier 3/Stage IIIA Equivalent OR Tier 2/Stage II Equivalent
Engine Model CatĀ® C18 ā„¢
Gross - ISO 14396 580 HP
Net Power 541 HP
Net Power - SAE J1349 541 HP
Peak Power Speed 1500/min
Peak Power Speed - 1,500 rpm - Gross - ISO 14396 580 HP
Peak Power Speed - 1,500 rpm - Gross - SAE J1995 588 HP
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349 541 HP
Peak Torque - 1,200 rpm 2104 lb/ft
Rated Speed 1700/min
Stroke 7.2 in
Torque Rise 58 %

Operating Specifications

Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3)
Cat Truck Match - High Lift 773ļ½ž775
Cat Truck Match - Standard 770ļ½ž772
Operating Weight 112574 lb
Rated Payload - Loose Material 16 t
Rated Payload - Quarry Face 12.5 t

Transmission

Direct Drive - Forward 1 Lock-up disabled
Direct Drive - Forward 2 7.8 mile/h
Direct Drive - Forward 3 13.9 mile/h
Direct Drive - Forward 4 24.4 mile/h
Direct Drive - Reverse 1 5 mile/h
Direct Drive - Reverse 2 8.9 mile/h
Direct Drive - Reverse 3 15.8 mile/h
Forward - 1 4 mile/h
Forward - 2 7.2 mile/h
Forward - 3 12.7 mile/h
Forward - 4 21.6 mile/h
Reverse - 1 4.7 mile/h
Reverse - 2 8.3 mile/h
Reverse - 3 14.4 mile/h
Transmission Type Cat-Planetenlastschaltgetriebe

Hydraulic System - Lift/Tilt

Cylinders, Double Acting - Lift, Bore and Stroke 210 mm Ɨ 1050 mm (8.7 in Ɨ 41.3 in)
Cylinders, Double Acting - Tilt, Bore and Stroke 269 mm Ɨ 685 mm (8.7 in Ɨ 27 in)
Lift/Tilt System Variable displacement piston
Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing
Maximum Flow 13.7 gal/min
Maximum Flow at 1,400-1,860 rpm 153 gal/min
Pilot System Variable displacement piston
Relief Valve Setting - Lift/Tilt 4757 psi
Relief Valve Setting - Main 551 psi

Service Refill Capacities

Coolant (Validated by Test Cell Fill Quantities) 33 gal (US)
Cooling System 31.7 gal (US)
Crankcase 15.9 gal (US)
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only) 8.7 gal (US)
Differential - Final Drives - Front 49.1 gal (US)
Differential - Final Drives - Rear 49.1 gal (US)
Fuel Tank 188 gal (US)
Hydraulic System - Tank Only 63.4 gal (US)
Hydraulic System Factory Fill 125.5 gal (US)
Transmission 31.7 gal (US)
Transmission - Validated by Test Cell Fill Quantities 29 gal (US)

Buckets

Bucket Capacities 4.7-13 m3 (6.2-17 yd3)

Axles

Front Fixed
Oscillation Angle 13 Ā°
Rear Trunnion

Brakes

Brakes SAEĀ J1473Ā OKT90, ISOĀ 3450:1992

Hydraulic System - Steering

Maximum Flow 71.3 gal/min
Relief Valve Setting - Steering 4351 psi
Steering Cycle Times - High Idle 3.4 s
Steering Cycle Times - Low Idle 5.6 s
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Total Steering Angle 86 Ā°

Hydraulic Cycle Time (1,400-1,860 rpm)

Dump 2.2 s
Lower Float Down 3.5 s
Rack Back 4.5 s
Raise 8 s
Total Hydraulic Cycle Time - Empty Bucket 18.2 s

Sound Performance - Tier 4 Final/Stage IV - Standard

Machine Sound Level (ISO 6395) 111 dB(A)
Operator Sound Level (ISO 6396) 72 dB(A)

Sound Performance - Tier 4 Final/Stage IV: Suppression

Machine Sound Level (ISO 6395) 109 dB(A)
Operator Sound Level (ISO 6396) 72 dB(A)

Sound Performance - Tier 2 Equivalent/Stage II: Suppression

Machine Sound Level (ISO 6395) 110 dB(A)
Operator Sound Level (ISO 6396) 72 dB(A)

Sound Performance - Tier 2 Equivalent/Stage II: Standard

Machine Sound Level (ISO 6395) 112 dB(A)
Operator Sound Level ( ISO 6396) 73 dB(A)

Download resources

988K Product Brochure
988K Key Features
988K Technical Specifications

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