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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 60 years, built on a legacy of reliability, performance, safety, operator comfort, serviceability, and productivity. The 988 XE brings improved sustainability and maximum efficiency to this machine platform.

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Engine

Peak Power Speed
1,500 rpm
Net Power - SAE J1349
538 HP
Rated Speed
1,700 rpm
Bore
5.7 in
Stroke
7.2 in
Displacement
1105 in²
Peak Torque - 1,200 rpm - SAE J1995
2230 lb/ft
Torque Rise
58%
Emissions
U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014
Engine Model
Cat® C18 ™

Buckets

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

Service Refill Capacities

Engine Crankcase
16 gal (US)
Differential - Final Drives - Front
49 gal (US)
Differential - Final Drives - Rear
49 gal (US)
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
Hydraulic System - Implement/Steering
126 gal (US)
Fuel Tank
147 gal (US)
Diesel Exhaust Fluid Tank
8.7 gal (US)
Transmission
16 gal (US)

Transmission

Transmission Type
Cat switched reluctance electric drive

Operating Specifications

Operating Weight - Standard
116362 lb
Operating Weight - High Lift
119618 lb
Rated Payload - Standard (Quarry Face)
12.5 ton (US)
Rated Payload - Loose Material (Standard)
16 ton (US)
Bucket Capacity Range
4.7-13 m3 (6.2-17 yd3)

Hydraulic System - Lift/Tilt

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

Hydraulic Cycle Times

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

Dimensions (Approximate) - High Lift

Wheel Base
14.9 ft

Hydraulic System - Steering

Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Steering Cut Off Pressure
4351 psi
Total Steering Angle
86°
Steering Cycle Times - High Idle
3.4 s
Steering Cycle Times - Low Idle
5.6 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

Axles

Front
Fixed
Rear
Trunnion
Oscillation Angle
13°

Brakes

Brakes
ISO 3450:2011

Shipping

UPC
96%

Operator's Cab

ROPS/FOPS
ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards