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Caterpillar

988K

Wheel Loader

Net Power
541.0 hp
All wheel loaders
Caterpillar 988K Wheel Loader
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Image: petersoncat.com

Specifications

68 data points

Operating Specifications

Operating Specifications specifications
Rated Bucket Capacity8.31 – 10.01 yd³
Rated Payload27,558 lb
Cat Truck Match - High Lift773-775
Cat Truck Match - Standard770-772
Rated Payload - High Lift27,558 lb
Rated Payload - Standard27,558 lb
Tipping Load - Articulated 37 degrees68,005 lb
Tipping Load - Straight78,115 lb

Engine

Engine specifications
Engine ModelCat C18 ACERT
Displacement1,105 in³
Net Power541.0 hp
MakeCat
Stroke7 in
Bore6 in
Torque Rise58.0 %
Net Power - SAE J1349541.0 hp
Rated Speed1,700 rpm
Peak Power Speed - 1,500 rpm - Gross - SAE J1995588.0 hp
Peak Power Speed - 1,500 rpm - Gross - ISO 14396580.0 hp
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349541.0 hp
Peak Torque - 1,200 rpm2,104 lb-ft
Gross - ISO 14396580.0 hp

Transmission

Transmission specifications
Transmission TypeCat planetary power shift
Direct Drive - Forward 1Lock-up disabled

Brakes & Steering

Brakes & Steering specifications
BrakesSAE J1473 OCT90 ISO 3450:1992

General Specifications

General Specifications specifications
Net Power538.00 hp (401.19 kw) Starting 2023 Model Year
Operating Weight112,574.00 lbs (51,062.77 kg) Starting 2021 Model Year
Operating Weight lbs (kg)112,574 (51,063) Starting 2016 Model Year
Bucket Capacity6.5 - 13.5 (5.0 - 10.3) Starting 2024 Model Year
Bucket Capacity cu. yd. (cu m)8.3 - 10.0 (6.3 - 7.6) Starting 2016 Model Year
Engine typeCat C18 Starting 2024 Model Year
Engine Power541 (403) Starting 2019 Model Year
Max Dump Height11.3 (3.4) Starting 2019 Model Year
Max Dump Height ft.( m)6.8 (2.1) Starting 2016 Model Year
Travel Speed(Fwd/Rev)24 / 25.4 mph Starting 2021 Model Year
Engine Power HP (KW)541 (403) Starting 2016 Model Year
Tip Load63,404 (28,760) Starting 2024 Model Year
EngineC18 Starting 2023 Model Year
Breakout Force98,421.00 lbs ft (133,439.20 nm) Starting 2023 Model Year
Full-Turn Tipping Load79,435.00 lbs (36,031.15 kg) Starting 2023 Model Year
Travel Speed24 / 25.4 mph Starting 2024 Model Year
Full-Turn Tip Load79,435.00 lbs (36,031.15 kg) Starting 2021 Model Year

Service Refill Capacities

Service Refill Capacities specifications
Cooling System31.7 gal
Transmission31.7 gal
Crankcase15.9 gal
Differential - Final Drives - Front49.1 gal
Differential - Final Drives - Rear49.1 gal
Hydraulic System - Tank Only63.4 gal
Hydraulic System Factory Fill125.5 gal
Diesel Exhaust Fluid Tank8.7 gal

Axles

Axles specifications
FrontFixed
RearTrunnion

Hydraulic Cycle Times

Hydraulic Cycle Times specifications
Raise8.0 s
Dump2.2 s
Rack Back4.5 s
Lower Float Down3.5 s
Total Hydraulic Cycle Time - Empty Bucket18.2 s

Hydraulic System - Lift/Tilt

Hydraulic System - Lift/Tilt specifications
Lift/Tilt SystemVariable displacement piston
Maximum Flow at 1,400-1,860 rpm153.0 gal/min
Pilot SystemVariable displacement piston

Hydraulic System - Steering

Hydraulic System - Steering specifications
Steering System - CircuitPilot load sensing
Steering System - PumpPiston variable displacement
Steering Cycle Times - High Idle3.4 s
Steering Cycle Times - Low Idle5.6 s

Sound Performance - Standard

Sound Performance - Standard specifications
Machine Sound Level (ISO 6395)111 dB(A)
Operator Sound Level (ISO 6396)71 dB(A)

Sound Performance - Suppression

Sound Performance - Suppression specifications
Machine Sound Level (ISO 6395)109 dB(A)
Operator Sound Level (ISO 6396)70 dB(A)

Comparable machines

Other wheel loaders in a similar weight class.