988 GC Wheel Loader

The Cat® 988 GC Wheel Loader helps you move more material at a low cost per hour for a fast return on your investment. This machine offers significant fuel savings and up to 10% lower owning and operating cost than the 988K.

Engine

Engine Power - ISO 14396: 2002 449hp
Engine Model Cat® C15
Rated Speed 2000 rpm
Peak Power Speed 1600 rpm
Gross Power - SAE J1995:2014 456hp
Net Power - SAE J1349:2011 373hp
Bore 5.4in
Stroke 6.75in
Displacement 927in³
Peak Torque - 1,200 rpm - SAE J1995 1778ft·lbf
Torque Rise 16%
Note (1) Two engine emission options are available: 1. Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan emission standards. 2. Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
Note (2) Net power advertised is the power available at the flywheel when the engine is equipped with fan at minimum speed, air intake system, exhaust system, and alternator.

Operating Specifications

Operating Weight 112426lb
Bucket Capacity Range 6.4-7.6 m3 (8.3-10 yd3)
Rated Payload - Quarry Face 12.5ton (US)
Cat Truck Match - High Lift 772/773/775

Transmission

Transmission Type Cat planetary power shift
Forward - 1 5mile/h
Forward - 2 8mile/h
Reverse - 1 5mile/h
Reverse - 2 8mile/h
Direct Drive - Forward 1 Lock-up disabled
Direct Drive - Forward 2 8mile/h
Direct Drive - Forward 3 14mile/h
Direct Drive - Forward 4 24mile/h
Direct Drive - Reverse 1 Lock-up disabled
Direct Drive - Reverse 2 9mile/h
Direct Drive - Reverse 3 16mile/h
Direct Drive - Reverse 4 25.4mile/h
Note Travel speeds based on 35/65-R33 tires.

Hydraulic System - Lift/Tilt

Lift/Tilt System - Circuit EH - Load Sense
Lift/Tilt System - Pump Variable displacement piston
Maximum Flow at 2,165 rpm 159gal/min
Relief Valve Setting - Lift/Tilt 4598psi
Cylinders, Double Acting - Lift, Bore and Stroke 190 mm x 1216 mm (7.5 in x 48 in)
Cylinders, Double Acting - Tilt, Bore and Stroke 170 mm x 722 mm (6.7 in x 28.4 in)
Pilot System Variable displacement piston

Hydraulic Cycle Times

Rack Back 3.8s
Raise 7.5s
Dump 3s
Lower Float Down 4.6s
Total Hydraulic Cycle Time - Empty Bucket 18.9s

Hydraulic System - Steering

Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Maximum Flow 52gal (US)
Relief Valve Setting - Steering 4000psi
Total Steering Angle 70°
Steering Cycle Times - High Idle 3s
Steering Cycle Times - Low Idle 5.2s

Air Conditioning System

Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. - If equipped with R134a (Global Warming Potential = 1430), the system co

Axles

Front Fixed
Rear Trunnion
Oscillation Angle +/-12.5°

Brakes

Brakes ISO 3450:2011

Operator's Cab

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

Sound Performance - Tier 4 Final / Stage V

Operator Sound Pressure Level (ISO 6396:2008) 73dB(A)
Machine Sound Power Level (ISO 6395:2008) 113dB(A)
Operator Sound Pressure Level (ISO 6396:2008)* 72dB(A)
Machine Sound Power Level (ISO 6395:2008)** 110dB(A)
Note (1) * For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives.”
Note (2) ** European Union Directive “2000/14/EC” as amended by “2005/88/EC” and UK Noise Regulation 2001 No. 1701.
Note (3) The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (4) The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (5) Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment.

Sound Performance - Tier 3 / Stage IIIA

Operator Sound Pressure Level (ISO 6396:2008) 74dB(A)
Machine Sound Power Level (ISO 6395:2008) 113dB(A)
Operator Sound Pressure Level (ISO 6396:2008)* 73dB(A)
Machine Sound Power Level (ISO 6395:2008)** 110dB(A)
Note (1) * For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives.”
Note (2) ** European Union Directive “2000/14/EC” as amended by “2005/88/EC” and UK Noise Regulation 2001 No. 1701.
Note (3) The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (4) The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (5) Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment.

Service Refill Capacities

Fuel Tank 141gal (US)
Cooling System 27gal (US)
Engine Crankcase 9gal (US)
Diesel Exhaust Fluid Tank 5.5gal (US)
Transmission 20gal (US)
Differential - Final Drives - Front 49gal (US)
Differential - Final Drives - Rear 45gal (US)
Note Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to:  20% biodiesel FAME (fatty acid methyl ester) ***  10

Dimensions (Approximate) - High Lift

Ground to Top of ROPS 13.5ft
Ground to Top of Exhaust Stacks 13.3ft
Ground to Top of Hood 10.7ft
Rear Axle - Centerline to Bumper 10.3ft
Front Axle Centerline to Bucket Tip 15.7ft
Wheel Base 12.5ft
Maximum Overall Length 39.5ft
Ground to Lower Hitch Clearance 1.5ft
Clearance at Maximum Lift 12ft
B-Pin Height - Maximum Lift 18.7ft
Maximum Overall Height - Bucket Raised 25ft
Reach - Maximum Lift 7.7ft
Note Specifications are calculated with 6.9 m3 (9.0 yd3 ) rock bucket equipped with Michelin XLDD1 35/65 R33 tires.

Standard Equipment

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Electrical
    • Alarm, back-up
    • Alternator, single 145 amp
    • Batteries, maintenance free
    • Converter, 10/15 amp, 24V to 12V
    • Lighting system (LED, work lights, access and service platform lighting)
    • Starting and charging system, 24V
    • Auxiliary jump start receptacle
  • Operator Environment
    • Cab precleaner
    • Lights, LED
    • AM/FM radio
    • Graphical Information Display, displays real time operating information, performs calibrations and customizes operator settings
    • Air conditioner
    • Cat Vision, rear vision camera system
    • Cab, sound suppressed and pressurized, integrated rollover protective structure/falling objects protective structure (ROPS/FOPS) radio ready for entertainment, includes antenna, speakers and converter (12‑volt 5-amp) and power port
    • Controls, lift and tilt function
    • Heater, defroster
    • Horn, electric
    • Instrumentation, gauges
      – Coolant temperature
      – Engine hour meter
      – Hydraulic oil temperature
      – Powertrain oil temperature
    • Light, cab, dome
    • Lunchbox, beverage holders
    • CB radio-ready
    • Mirrors, rearview (externally mounted)
    • Seat, Cat Comfort Cloth, air suspension, six-way adjustable
    • Seat belt minder
    • Seat belt, retractable, 76 mm (3 in) wide
    • Steering and Transmission Integrated Control (STIC) system
    • UV glass
    • Transmission gear indicator
    • Wet-Arm wipers/washers (front and rear)
      – Intermittent front and rear wipers
    • Lights, directional
    • Cat Production Measurement ready
  • Powertrain
    • Brakes, oil-cooled, multi-disc, service/secondary
    • Case drain screens
    • Electro hydraulic parking brake
    • Engine, C15 MEUI diesel, turbocharged/aftercooled
    • Ground level engine shutdown switch
    • Turbine precleaner, engine air intake
    • Starting aid, ether, automatic
    • Throttle lock, electronic
    • Manual switch and automatic fuel priming
    • Torque converter, neutralizer
    • Transmission, planetary power shift, 4F/4R electronic control
    • Cat Integrated Powered Electronics
    • Automatic retarding controls
    • Crankcase guard
  • Additional Equipment
    • Automatic bucket lift kickout/positioner
    • Base machine price includes a rim allowance
    • Hydraulically driven demand fan
    • Couplings, Cat O-ring face seals
    • Doors, service access (locking)
    • Ecology drains for engine, radiator, hydraulic tank
    • Fuel tank, 535 L (141 gal)
    • Hoses, Cat XT
    • Hydraulic, steering and brake filtration/screening system
    • Cat Clean Emission Module
    • Oil sampling valves
    • Premixed 50 percent concentration of extended life coolant with freeze protection to –34° C (–29° F)
    • Rear access to cab and service platform
    • Steering, load sensing
    • Toe kicks
    • Vandalism protection caplocks

Optional Equipment

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Powertrain
    • High ambient cooling – software
    • Engine block heater 120V or 240V
    • Antifreeze -50°C (-58°F)
  • Operator Environment
    • Cat Production Measurement
    • Cat Detect, object detection system
  • Additional Equipment
    • Front and rear roading fenders
    • Cold Weather Starting
    • Tire Pressure Monitoring System