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Overview

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.

Key Features

More Comfort. More Performance. More Versatility.

LESS FUEL CONSUMPTION

Cycle time improvements in load & carry applications, along with improved stability and faster maneuvering with an optional counterweight result in increased productivity.

LESS POWERTRAIN MAINTENANCE

Reduce your powertrain maintenance by 50% with 2,000-hour service intervals and no component rebuild until 17,500 hours.

MORE EFFICIENT DIG CYCLES

Designed for easier operation with single pedal with dynamic braking and operator assist features, for faster training of new operators.

Specifications

Net Power - SAE J1349:2011 538 hp
Engine Model Cat® C18 ™
Engine Power - ISO 14396:2002 580 hp
Gross Power - SAE J1995:2014 588 hp
Rated Speed 1,700 rpm
Peak Power Speed 1,500 rpm
Emissions U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014
Bore 5.7 in
Stroke 7.2 in
Displacement 1105 in³
Peak Torque - 1,200 rpm - SAE J1995 2230 ft·lbf
Torque Rise 58%
Operating Weight 116362 lb
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)
Transmission Type Cat switched reluctance electric drive
Forward 1 (virtual) 4.3 mile/h
Forward 2 (virtual) 7 mile/h
Forward 3 (virtual) 13.8 mile/h
Forward 4 (virtual) 20 mile/h
Reverse 1 (virtual) 4.3 mile/h
Reverse 2 (virtual) 7 mile/h
Reverse 3 (virtual) 17.5 mile/h
Lift/Tilt System - Circuit EH-Positive Flow Control, Flow Sharing
Lift/Tilt System - Pump Variable displacement piston
Maximum Flow at 1,400-1,600 rpm 153 gal/min
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
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
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Maximum Flow at 1,400-1,600 rpm 71.3 gal/min
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 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 equivalent of 2.574 metric tonnes.
Front Fixed
Rear Trunnion
Oscillation Angle 13°
Brakes ISO 3450:2011
ROPS/FOPS ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards
Fuel Tank 147 gal (US)
Cooling System - Jacket Water 30 gal (US)
Cooling Systems - Power Train 8 gal (US)
Engine Crankcase 16 gal (US)
Diesel Exhaust Fluid Tank 8.7 gal (US)
Transmission 16 gal (US)
Differential - Final Drives - Front 49 gal (US)
Differential - Final Drives - Rear 49 gal (US)
Hydraulic System - Implement/Steering 126 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 are compatible with the following renewable, alternative, and biodiesel* fuels that reduce greenhouse gases: Up to B20 biodiesel (FAME) ** Up to 100% HVO and GTL renewable fuels * Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations†(SEBU6250) for details. – Cat DEO-ULS™ or oils that meet the Cat ECF-3, API CJ-4, and ACEA E9 specifications are required. – Only use DEF that meets ISO 22241-1 standards.
Operator Sound Pressure Level (ISO 6396:2008) 72 dB(A)
Machine Sound Power Level (ISO 6395:2008) 109 dB(A)
Operator Sound Pressure Level (ISO 6396:2008) 72 dB(A)
Machine Sound Power Level (ISO 6395:2008) 110 dB(A)
Ground to Top of ROPS 13.8 ft
Ground to Top of Exhaust Stacks 14.8 ft
Ground to Top of Hood 10.9 ft
Ground to Bumper Clearance 3.1 ft
Rear Axle - Centerline to Bumper 10.5 ft
Front Axle Centerline to Bucket Tip 14 ft
Wheel Base 14.9 ft
Maximum Overall Length 39.3 ft
Ground to Lower Hitch Clearance 1.9 ft
Ground to Center of Axles 3.2 ft
Clearance at Maximum Lift 11.9 ft
B-Pin Height - Maximum Lift 18 ft
Maximum Overall Height - Bucket Raised 24.5 ft
Reach - Maximum Lift 6.5 ft
Note Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height.
Ground to Top of ROPS 13.8 ft
Ground to Top of Exhaust Stacks 14.8 ft
Ground to Top of Hood 10.9 ft
Ground to Bumper Clearance 3.1 ft
Rear Axle - Centerline to Bumper 10.5 ft
Front Axle Centerline to Bucket Tip 15.3 ft
Wheel Base 14.9 ft
Maximum Overall Length 40.7 ft
Ground to Lower Hitch Clearance 1.9 ft
Ground to Center of Axles 3.2 ft
Clearance at Maximum Lift 13.3 ft
B-Pin Height - Maximum Lift 19.3 ft
Maximum Overall Height - Bucket Raised 25.8 ft
Reach - Maximum Lift 6.8 ft
Note Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height.
Ground to Top of ROPS 13.8 ft
Ground to Top of Exhaust Stacks 13.8 ft
Ground to Top of Hood 10.9 ft
Ground to Bumper Clearance 3.1 ft
Rear Axle - Centerline to Bumper 10.5 ft
Front Axle Centerline to Fork Tip 16.5 ft
Wheel Base 14.9 ft
Maximum Overall Length 41.9 ft
Ground to Lower Hitch Clearance 1.9 ft
Ground to Center of Front Axle 3.2 ft
Fork Height with Level Arms 8.1 ft
Fork Top Clamp Opening 13.1 ft
Fork Height at Maximum Lift 17.2 ft
Hinge Pin Height at Maximum Lift 16.1 ft
Dump Angle at Maximum Lift -39.4 °
Bucket Capacities 4.7-13 m3 (6.2-17 yd3)
Recyclability 96%

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