Get a Quote

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 50 years. Focused on helping our customers succeed, we have continued to build upon each new series. The 988K continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.

Cat Specs
Photos
Downloads

Engine

Net Power
541 HP
Emissions
U.S. EPA Tier 4 Final/EU Stage V OR Tier 3/Stage IIIA Equivalent OR Tier 2/Stage II Equivalent
Net Power - SAE J1349
541 HP
Bore
5.7 in
Stroke
7.2 in
Displacement
1105 in²
Torque Rise
58
Engine Model
Cat® C18 ™

Operating Specifications

Operating Weight
112574 lb
Rated Payload - Quarry Face
12.5 ton (US)
Bucket Capacity Range
4.7-13 m3 (6.2-17 yd3)
Cat Truck Match - Standard
770?772
Cat Truck Match - High Lift
773?775

Buckets

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

Transmission

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

Hydraulic System - Lift/Tilt

Lift/Tilt System - Circuit
EH- Positive Flow Control, Flow Sharing
Relief Valve Setting - Lift/Tilt
4757 psi

Service Refill Capacities

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

Axles

Front
Fixed
Rear
Trunnion
Oscillation Angle
13 °

Brakes

Brakes
SAE J1473 OKT90, ISO 3450:1992

Hydraulic System - Steering

Steering System - Pump
Piston, variable displacement
Steering System - Circuit
Pilot, load sensing