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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 low cost per ton. Introduced in 1963, the 988 has been an industry leader for 60 years. Focused on helping our customers succeed, we have continued to build upon each new series. The 988 continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.

Key Features

More Comfort. More Performance. More Versatility.

BETTER FUEL EFFICIENCY

Utilizing Economy Mode helps save on fuel all while maintaining productivity

EASIER MAINTENANCE

Make regular maintenance more convenient with grouped service points

MORE PRODUCTIVITY

Deliver more productivity in most truck loading applications while using performance series buckets with increased capacities

Specifications

Net Power - SAE J1349:2011 538 hp
Engine Power - ISO 14396:2002 580 hp
Gross Power - SAE J1995:2014 588 hp
Engine Model Cat® C18 ™
Peak Power Speed 1500/rpm
Rated Speed 1700/min
Emissions U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards, Brazil MAR-1 and China Nonroad Stage IV emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA, and U.S. EPA Tier 2 and EU Stage II
Bore 5.7 in
Stroke 7.2 in
Displacement 1105 in³
Peak Torque - 1,200 rpm 2230 lb/ft
Torque Rise 58 %
Operating Weight 112574 lb
Rated Payload - Quarry Face 12.5 t
Rated Payload - Loose Material 16 t
Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3)
Cat Truck Match - Standard 770~772
Cat Truck Match - High Lift 773~775
Transmission Type Cat planetary powershift
Forward - 1 4 mile/h
Forward - 2 7.2 mile/h
Forward - 3 12.7 mile/h
Forward - 4 21.6 mile/h
Reverse - 1 4.7 mile/h
Reverse - 2 8.3 mile/h
Reverse - 3 14.4 mile/h
Direct Drive - Forward 1 Lock-up disabled
Direct Drive - Forward 2 7.8 mile/h
Direct Drive - Forward 3 13.9 mile/h
Direct Drive - Forward 4 24.4 mile/h
Direct Drive - Reverse 1 5 mile/h
Direct Drive - Reverse 2 8.9 mile/h
Direct Drive - Reverse 3 15.8 mile/h
Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing
Lift/Tilt System Variable displacement piston
Maximum Flow at 1,400-1,860 rpm 153 gal/min
Relief Valve Setting - Lift/Tilt 4757 psi
Cylinders, Double Acting - Lift, Bore and Stroke 210 mm × 1050 mm (8.7 in × 41.3 in)
Cylinders, Double Acting - Tilt, Bore and Stroke 269 mm × 685 mm (8.7 in × 27 in)
Pilot System Variable displacement piston
Relief Valve Setting - Main 551 psi
Rack Back 4.5 s
Raise 8 s
Dump 2.2 s
Lower Float Down 3.5 s
Total Hydraulic Cycle Time - Empty Bucket 18.2 s
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Maximum Flow 71.3 gal/min
Relief Valve Setting - Steering 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 188 gal (US)
Cooling System 31.7 gal (US)
Coolant (Validated by Test Cell Fill Quantities) 33 gal (US)
Crankcase 15.9 gal (US)
Diesel Exhaust Fluid Tank 8.7 gal (US)
Transmission 31.7 gal (US)
Transmission - Validated by Test Cell Fill Quantities 29 gal (US)
Differential - Final Drives - Front 49.1 gal (US)
Differential - Final Drives - Rear 49.1 gal (US)
Hydraulic System Factory Fill 125.5 gal (US)
Hydraulic System - Tank Only 63.4 gal (US)
Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A)
Machine Sound Power Level (ISO 6395:2008) 111 dB(A)
Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A)
Machine Sound Power Level (ISO 6395:2008) 112 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
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
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
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
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
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
Bucket Capacities 4.7-13 m3 (6.2-17 yd3)

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