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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.

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Engine

Net Power
541 HP
Bore
5.7 in
Stroke
7.2 in
Displacement
1105 in³
Torque Rise
58% %
Rated Speed
1,700 rpm
Emissions
U.S. EPA Tier 4 Final/EU Stage IV
Engine Model
Cat® C18 ACERT™
Gross Power - ISO 14396
580 HP
Net Power - SAE J1349
541 HP

Operating Specifications

Operating Weight
116362 lb
Bucket Capacity Range
4.7-13 m3 (6.2-17 yd3)

Buckets

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

Hydraulic System - Steering

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° °
Steering Cut Off Pressure
4351 psi

Service Refill Capacities

Hydraulic System - Implement/Steering
126 gal (US)
Transmission
16 gal (US)
Diesel Exhaust Fluid Tank
8.7 gal (US)
Engine Crankcase
16 gal (US)
Fuel Tank
147 gal (US)
Differential - Final Drives - Front
49 gal (US)
Note
All non-road Tier 4 Final/Stage IV 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) or up to B20
Differential - Final Drives - Rear
49 gal (US)

Transmission

Transmission Type
Cat switched reluctance electric drive

Axles

Front
Fixed
Rear
Trunnion
Oscillation Angle
13°

Hydraulic Cycle Times

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

Air Conditioning System

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 equiv

Hydraulic System - Lift/Tilt

Tilt Cylinder - Stroke
27 in
Lift Cylinder - Stroke
41.3 in
Relief Valve Setting - Lift/Tilt
4757 psi
Lift/Tilt System - Circuit
EH-Positive Flow Control, Flow Sharing
Tilt Cylinder - Bore
8.7 in
Lift Cylinder - Bore
8.7 in
Lift/Tilt System - Pump
Variable displacement piston

Dimensions (Approximate) - High Lift

Wheel Base
14.9 ft

Brakes

Brakes
ISO 3450:2011