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.
Key Features
More Comfort. More Performance. More Versatility.
OPTIMUM 50 TON TRUCK MATCH LOADER
Achieve even greater production with an optimized truck match to maximize the volume of material moved at the lowest operating cost per ton.
UP TO 10% LOWER OWNING & OPERATING COST
Designed to reduce your service and maintenance costs with grouped service points and ground level access to the electrical service center.
EASY TO OPERATE AND MAINTAIN
Enhanced operator controls deliver greater efficiency, productivity, and comfort.
UP TO 5% LESS CO2 EMISSIONS
The 988 GC emits up to 5% less CO2 than the previous 988K.
Specifications
| Engine Model | Cat® C15 |
|---|---|
| Rated Speed | 2000 rpm |
| Peak Power Speed | 1600 rpm |
| Gross Power - SAE J1995:2014 | 456 hp |
| Net Power - SAE J1349:2011 | 448 hp |
| Bore | 5.4 in |
| Stroke | 6.75 in |
| Displacement | 927 in³ |
| Peak Torque (1,200 rpm) - SAE J1995:2014 | 1778 lbf·ft |
| 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. |
| Note (3) | Net power at the flywheel when the fan is at maximum speed is 304 kW / 408 hp per SAE reference conditions. |
| Operating Weight | 112426 lb |
|---|---|
| Bucket Capacity Range | 6.4-7.6 m3 (8.3-10 yd3) |
| Rated Payload - Quarry Face | 12.5 ton (US) |
| Cat Truck Match - High Lift | 772/773/775 |
| Transmission Type | Cat planetary power shift |
|---|---|
| Forward - 1 | 5 mile/h |
| Forward - 2 | 8 mile/h |
| Reverse - 1 | 5 mile/h |
| Reverse - 2 | 8 mile/h |
| Direct Drive - Forward 1 | Lock-up disabled |
| Direct Drive - Forward 2 | 8 mile/h |
| Direct Drive - Forward 3 | 14 mile/h |
| Direct Drive - Forward 4 | 24 mile/h |
| Direct Drive - Reverse 1 | Lock-up disabled |
| Direct Drive - Reverse 2 | 9 mile/h |
| Direct Drive - Reverse 3 | 16 mile/h |
| Direct Drive - Reverse 4 | 25.4 mile/h |
| Note | Travel speeds based on 35/65-R33 tires. |
| Lift/Tilt System - Circuit | EH - Load Sense |
|---|---|
| Lift/Tilt System - Pump | Variable displacement piston |
| Maximum Flow at 2,165 rpm | 159 gpm |
| Relief Valve Setting - Lift/Tilt | 4598 psi |
| 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 |
| Relief Valve Setting | 500 psi |
| Rack Back | 3.8 s |
|---|---|
| Raise | 7.5 s |
| Dump | 3 s |
| Lower Float Down | 4.6 s |
| Total Hydraulic Cycle Time - Empty Bucket | 18.9 s |
| Steering System - Circuit | Pilot, load sensing |
|---|---|
| Steering System - Pump | Piston, variable displacement |
| Maximum Flow at 2,165 rpm | 52 gpm |
| Relief Valve Setting - Steering | 4000 psi |
| Total Steering Angle | 70° |
| Steering Cycle Times - High Idle | 3 s |
| Steering Cycle Times - Low Idle | 5.2 s |
| 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). |
|---|
| Front | Fixed |
|---|---|
| Rear | Trunnion |
| Oscillation Angle | +/-12.5° |
| Brakes | ISO 3450:2011 |
|---|
| ROPS/FOPS | Rollover Protective Structure/Falling Objects Protective Structure (ROPS/FOPS) meet ISO 3471:2008 and ISO 3449:2005 Level II standards |
|---|
| Operator Sound Pressure Level (ISO 6396:2008) | 73 dB(A) |
|---|---|
| Machine Sound Power Level (ISO 6395:2008) | 113 dB(A) |
| Operator Sound Pressure Level (ISO 6396:2008)* | 72 dB(A) |
| Machine Sound Power Level (ISO 6395:2008)** | 110 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. |
| Operator Sound Pressure Level (ISO 6396:2008) | 74 dB(A) |
|---|---|
| Machine Sound Power Level (ISO 6395:2008) | 113 dB(A) |
| Operator Sound Pressure Level (ISO 6396:2008)* | 73 dB(A) |
| Machine Sound Power Level (ISO 6395:2008)** | 110 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. |
| Fuel Tank | 141 gal (US) |
|---|---|
| Cooling System | 27 gal (US) |
| Engine Crankcase | 9 gal (US) |
| Diesel Exhaust Fluid Tank | 5.5 gal (US) |
| Transmission | 20 gal (US) |
| Differential - Final Drives - Front | 49 gal (US) |
| Differential - Final Drives - Rear | 45 gal (US) |
| Hydraulic System Factory Fill | 94 gal (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) *** - 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). |
| Ground to Top of ROPS | 13.5 ft |
|---|---|
| Ground to Top of Exhaust Stacks | 13.3 ft |
| Ground to Top of Hood | 10.7 ft |
| Ground to Fuel Tank Clearance | 2.2 ft |
| Rear Axle - Centerline to Bumper | 10.3 ft |
| Front Axle Centerline to Bucket Tip | 16.7 ft |
| Wheel Base | 12.5 ft |
| Maximum Overall Length | 39.5 ft |
| Ground to Lower Hitch Clearance | 1.5 ft |
| Ground to Center of Front Axle | 3.2 ft |
| Clearance at Maximum Lift (45° Dump) | 12 ft |
| B-Pin Height - Maximum Lift | 18.7 ft |
| Maximum Overall Height - Bucket Raised | 25 ft |
| Reach at Maximum Lift (45° Dump) | 7.7 ft |
| Note | Specifications are calculated with 6.9 m3 (9.0 yd3 ) rock bucket equipped with Michelin XLDD1 35/65 R33 tires. |
