Large Wheel Loaders

988 GC Wheel Loader

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988 GC Large Wheel Loader
988 GC Large Wheel Loader
988 GC Large Wheel Loader
988 GC Large Wheel Loader
988 GC Large Wheel Loader
988 GC Large Wheel Loader
US
Metric

Overview

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 Model
Cat® C15
Rated Speed
2000 rpm
Peak Power Speed
1600 rpm
Engine Power - ISO 14396
449.00 hp
335.00 kW
Gross Power - SAE J1995:2014
456.00 hp
340.00 kW
Net Power - SAE J1349:2011
448.00 hp
334.00 kW
Emissions
U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014
Bore
5.40 in
137.00 mm
Stroke
6.75 in
171.50 mm
Displacement
927.00 in³
15.20 l
Peak Torque - 1,200 rpm - SAE J1995
1778.00 ft·lbf
2411.00 N·m
Torque Rise
16%

Operating Specifications

Operating Weight
112426.00 lb
50996.00 kg
Rated Payload - Quarry Face
12.50 ton (US)
11.30 t
Bucket Capacity Range
6.4-7.6 m3 (8.3-10 yd3)
Cat Truck Match - High Lift
772/773/775

Transmission

Transmission Type
Cat planetary power shift
Forward - 1
5.00 mile/h
7.30 km/h
Forward - 2
8.00 mile/h
12.20 km/h
Reverse - 1
5.00 mile/h
7.60 km/h
Reverse - 2
8.00 mile/h
13.60 km/h
Direct Drive - Forward 1
Lock-up disabled
Direct Drive - Forward 2
8.00 mile/h
12.70 km/h
Direct Drive - Forward 3
14.00 mile/h
22.00 km/h
Direct Drive - Forward 4
24.00 mile/h
39.00 km/h
Direct Drive - Reverse 2
9.00 mile/h
14.10 km/h
Direct Drive - Reverse 3
16.00 mile/h
25.00 km/h
Direct Drive - Reverse 4
25.40 mile/h
40.80 km/h

Hydraulic System - Lift/Tilt

Lift/Tilt System - Circuit
EH - Load Sense
Lift/Tilt System
2X x 145 cc Variable displacement piston
Maximum Flow at 2,165 rpm
159.00 gal/min
600.00 l/min
Relief Valve Setting - Lift/Tilt
4598.00 psi
31700.00 kPa
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
Tilt Cylinder - Stroke
27.00 in
685.00 mm

Hydraulic Cycle Times

Rack Back
3.80 s
3.80 s
Raise
7.50 s
7.50 s
Dump
3.00 s
3.00 s
Lower Float Down
4.60 s
4.60 s
Total Hydraulic Cycle Time - Empty Bucket
18.90 s
18.90 s

Hydraulic System - Steering

Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Maximum Flow
52.00 gal (US)
200.00 l/min
Relief Valve Setting - Steering
4000.00 psi
27600.00 kPa
Total Steering Angle
70°
Steering Cycle Times - High Idle
3.00 s
3.00 s
Steering Cycle Times - Low Idle
5.20 s
5.20 s

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 contains 1.8 kg (3.9 lb) of refrigerant, which has a CO2 equivalent of 2.574 metric tonnes (2.837 tons).

Axles

Front
Fixed
Rear
Trunnion
Oscillation Angle
+/-12.5°

Brakes

Brakes
ISO 3450:2011

Operator's Cab

ROPS/FOPS
Rollover Protective Structure/Falling Objects Protective Structure (ROPS/FOPS) meet ISO 3471:2008 and ISO 3449:2005 Level II standards

Service Refill Capacities

Fuel Tank
141.00 gal (US)
535.00 l
Cooling System
27.00 gal (US)
101.00 l
Engine Crankcase
9.00 gal (US)
34.00 l
Diesel Exhaust Fluid Tank
5.50 gal (US)
21.00 l
Transmission
20.00 gal (US)
75.00 l
Differential - Final Drives - Front
49.00 gal (US)
186.00 l
Differential - Final Drives - Rear
45.00 gal (US)
170.00 l
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) *** - 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. * While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. *** Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).

Sound Performance - Tier 4 Final/EU Stage V - Standard

Operator Sound Level (ISO 6396)
72.00 dB(A)
72.00 dB(A)
Machine Sound Level (ISO 6395)
110.00 dB(A)
110.00 dB(A)
Note (1)
The operator sound pressure level was measured according to the test procedures and conditions specified in ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
Note (2)
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.
Note (3)
The machine sound power level was measured according to the test procedures and conditions specified in ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.

Dimensions (Approximate) - High Lift

Ground to Top of ROPS
13.50 ft
4100.00 mm
Ground to Top of Exhaust Stacks
13.30 ft
4060.00 mm
Ground to Top of Hood
10.70 ft
3270.00 mm
Rear Axle - Centerline to Bumper
10.30 ft
3132.00 mm
Front Axle Centerline to Bucket Tip
16.70 ft
5100.00 mm
Wheel Base
12.50 ft
3810.00 mm
Maximum Overall Length
39.50 ft
12042.00 mm
Ground to Lower Hitch Clearance
1.50 ft
459.00 mm
Clearance at Maximum Lift
12.00 ft
3732.00 mm
B-Pin Height - Maximum Lift
18.70 ft
5755.00 mm
Maximum Overall Height - Bucket Raised
25.00 ft
7582.00 mm
Reach - Maximum Lift
7.70 ft
2342.00 mm
Note
Specifications are calculated with 6.9 m3 (9.0 yd3 ) rock bucket equipped with Michelin XLDD1 35/65 R33 tires.

Buckets

Bucket Capacities
6.4-7.6 m3 (8.3-10 yd3)

Sustainability

Recyclability
96%

Transmission

Direct Drive - Reverse 1
Lock-up disabled

Engine

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.

Transmission

Note
Travel speeds based on 35/65-R33 tires.

Hydraulic System - Lift/Tilt

Lift/Tilt System - Pump
Variable displacement piston

Sound Performance - Tier 4 Final / Stage V

Operator Sound Pressure Level (ISO 6396:2008)
73.00 dB(A)
73.00 dB(A)
Machine Sound Power Level (ISO 6395:2008)
113.00 dB(A)
113.00 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*
72.00 dB(A)
72.00 dB(A)
Machine Sound Power Level (ISO 6395:2008)**
110.00 dB(A)
110.00 dB(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)
74.00 dB(A)
74.00 dB(A)
Machine Sound Power Level (ISO 6395:2008)
113.00 dB(A)
113.00 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*
73.00 dB(A)
73.00 dB(A)
Machine Sound Power Level (ISO 6395:2008)**
110.00 dB(A)
110.00 dB(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.

Engine

Peak Torque (1,200 rpm) - SAE J1995:2014
1778.00 lbf·ft
2411.00 N·m

Hydraulic System - Lift/Tilt

Relief Valve Setting
500.00 psi
3450.00 kPa

Hydraulic System - Steering

Maximum Flow at 2,165 rpm
52.00 gal/min
200.00 l/min

Service Refill Capacities

Hydraulic System Factory Fill
94.00 gal (US)
355.00 l

Dimensions (Approximate) - High Lift

Ground to Fuel Tank Clearance
2.20 ft
686.00 mm
Ground to Center of Front Axle
3.20 ft
978.00 mm
Clearance at Maximum Lift (45° Dump)
12.00 ft
3732.00 mm
Reach at Maximum Lift (45° Dump)
7.70 ft
2342.00 mm

Engine

Note (3)
Net power at the flywheel when the fan is at maximum speed is 304 kW / 408 hp per SAE reference conditions.
Features

PROVEN RELIABILITY

LONG TERM VALUE AND DURABILITY

ACHIEVE GREATER PRODUCTIVITY

POWERFUL EFFICIENCY

PRODUCTIVITY WITH TECHNOLOGY

SAFETY FIRST

SAVE ON SERVICE AND MAINTENANCE

OPERATOR COMFORT AND CONTROL

SUSTAINABILITY

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
    • 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 emergency engine shutdown switch
    • Turbine precleaner, engine air intake
    • 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
    • Starting aid, ether, automatic
    • Antifreeze -50°C (-58°F)
  • OPERATOR ENVIRONMENT
    • Cat Production Measurement
    • CB radio-ready
    • Cat Detect, object detection system
  • ADDITIONAL EQUIPMENT
    • Front and rear roading fenders