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988 Wheel Loader

988 Wheel Loader

At a Glance

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 ™
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Overview

Engine

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Net Power - SAE J1349:2011 538hp
Engine Power - ISO 14396:2002 580hp
Gross Power - SAE J1995:2014 588hp
Engine Model Cat® C18 ™
Rated Speed 1700/min
Peak Power Speed 1500/rpm
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 5.7in
Stroke 7.2in
Displacement 1105in³
Peak Torque - 1,200 rpm 2230lb/ft
Torque Rise 58%

Operating Specifications

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Operating Weight 112574lb
Rated Payload - Quarry Face 12.5t
Rated Payload - Loose Material 16t
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

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Transmission Type Cat planetary powershift
Forward - 1 4mile/h
Forward - 2 7.2mile/h
Forward - 3 12.7mile/h
Forward - 4 21.6mile/h
Reverse - 1 4.7mile/h
Reverse - 2 8.3mile/h
Reverse - 3 14.4mile/h
Direct Drive - Forward 1 Lock-up disabled
Direct Drive - Forward 2 7.8mile/h
Direct Drive - Forward 3 13.9mile/h
Direct Drive - Forward 4 24.4mile/h
Direct Drive - Reverse 1 5mile/h
Direct Drive - Reverse 2 8.9mile/h
Direct Drive - Reverse 3 15.8mile/h

Hydraulic System - Lift/Tilt

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Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing
Lift/Tilt System Variable displacement piston
Maximum Flow at 1,400-1,860 rpm 153gal/min
Relief Valve Setting - Lift/Tilt 4757psi
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 551psi

Hydraulic Cycle Time (1,400-1,860 rpm)

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

Hydraulic System - Steering

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Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Maximum Flow 71.3gal/min
Relief Valve Setting - Steering 4351psi
Total Steering Angle 86 °
Steering Cycle Times - High Idle 3.4s
Steering Cycle Times - Low Idle 5.6s

Air Conditioning System

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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.

Axles

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Front Fixed
Rear Trunnion
Oscillation Angle 13 °

Brakes

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Brakes ISO 3450:2011

Operator's Cab

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

Service Refill Capacities

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Fuel Tank 188gal (US)
Cooling System 31.7gal (US)
Coolant (Validated by Test Cell Fill Quantities) 33gal (US)
Crankcase 15.9gal (US)
Diesel Exhaust Fluid Tank 8.7gal (US)
Transmission 31.7gal (US)
Transmission - Validated by Test Cell Fill Quantities 29gal (US)
Differential - Final Drives - Front 49.1gal (US)
Differential - Final Drives - Rear 49.1gal (US)
Hydraulic System Factory Fill 125.5gal (US)
Hydraulic System - Tank Only 63.4gal (US)

Sound Performance - Tier 4 Final / Stage V - Standard

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Operator Sound Pressure Level (ISO 6396:2008) 73dB(A)
Machine Sound Power Level (ISO 6395:2008) 111dB(A)

Sound Performance - Tier 3 / Stage III - Standard

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Operator Sound Pressure Level (ISO 6396:2008) 73dB(A)
Machine Sound Power Level (ISO 6395:2008) 112dB(A)

Dimensions (Approximate) - Standard Lift Linkage

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Ground to Top of ROPS 13.8ft
Ground to Top of Exhaust Stacks 14.8ft
Ground to Top of Hood 10.9ft
Rear Axle - Centerline to Bumper 10.5ft
Front Axle Centerline to Bucket Tip 14ft
Wheel Base 14.9ft
Maximum Overall Length 39.3ft
Ground to Lower Hitch Clearance 1.9ft
Clearance at Maximum Lift 11.9ft
B-Pin Height - Maximum Lift 18ft
Maximum Overall Height - Bucket Raised 24.5ft
Reach - Maximum Lift 6.5ft

Dimensions (Approximate) - High Lift Linkage

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Ground to Top of ROPS 13.8ft
Ground to Top of Exhaust Stacks 14.8ft
Ground to Top of Hood 10.9ft
Rear Axle - Centerline to Bumper 10.5ft
Front Axle Centerline to Bucket Tip 15.3ft
Wheel Base 14.9ft
Maximum Overall Length 40.7ft
Ground to Lower Hitch Clearance 1.9ft
Clearance at Maximum Lift 13.3ft
B-Pin Height - Maximum Lift 19.3ft
Maximum Overall Height - Bucket Raised 25.8ft
Reach - Maximum Lift 6.8ft

Buckets

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