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Caterpillar
988 GC Wheel Loader
Engine Power – ISO 14396
449 hp
335 kW
Operating Weight
112426 lb
50996 kg
Bucket Capacity Range
6.4-7.6 m3 (8.3-10 yd3)
6.4-7.6 m3 (8.3-10 yd3)
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.
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Exterior
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Interior
360° Interior view. Double click on the image to zoom in on any area of the product.
Details
Specifications
Engine
| Spec | Value |
|---|---|
| Engine Power – ISO 14396 | 449 hp 335 kW |
| Engine Model | Cat® C15 Cat® C15 |
| Rated Speed | 2000 rpm 2000 rpm |
| Peak Power Speed | 1600 rpm 1600 rpm |
| Gross Power – SAE J1995:2014 | 456 hp 340 kW |
| Net Power – SAE J1349:2011 | 373 hp 278 kW |
| Bore | 5.4 in 137 mm |
| Stroke | 6.75 in 171.5 mm |
| Displacement | 927 in³ 15.2 l |
| Peak Torque – 1,200 rpm – SAE J1995 | 1778 ft·lbf 2411 N·m |
| Torque Rise | 16% 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. 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. 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
| Spec | Value |
|---|---|
| Operating Weight | 112426 lb 50996 kg |
| Bucket Capacity Range | 6.4-7.6 m3 (8.3-10 yd3) 6.4-7.6 m3 (8.3-10 yd3) |
| Rated Payload – Quarry Face | 12.5 ton (US) 11.3 t |
| Cat Truck Match – High Lift | 772/773/775 772/773/775 |
Transmission
| Spec | Value |
|---|---|
| Transmission Type | Cat planetary power shift Cat planetary power shift |
| Forward – 1 | 5 mile/h 7.3 km/h |
| Forward – 2 | 8 mile/h 12.2 km/h |
| Reverse – 1 | 5 mile/h 7.6 km/h |
| Reverse – 2 | 8 mile/h 13.6 km/h |
| Direct Drive – Forward 1 | Lock-up disabled Lock-up disabled |
| Direct Drive – Forward 2 | 8 mile/h 12.7 km/h |
| Direct Drive – Forward 3 | 14 mile/h 22 km/h |
| Direct Drive – Forward 4 | 24 mile/h 39 km/h |
| Direct Drive – Reverse 1 | Lock-up disabled Lock-up disabled |
| Direct Drive – Reverse 2 | 9 mile/h 14.1 km/h |
| Direct Drive – Reverse 3 | 16 mile/h 25 km/h |
| Direct Drive – Reverse 4 | 25.4 mile/h 40.8 km/h |
| Note | Travel speeds based on 35/65-R33 tires. Travel speeds based on 35/65-R33 tires. |
Hydraulic System - Lift/Tilt
| Spec | Value |
|---|---|
| Lift/Tilt System – Circuit | EH - Load Sense EH - Load Sense |
| Lift/Tilt System – Pump | Variable displacement piston Variable displacement piston |
| Maximum Flow at 2,165 rpm | 159 gal/min 600 l/min |
| Relief Valve Setting – Lift/Tilt | 4598 psi 31700 kPa |
| Cylinders, Double Acting – Lift, Bore and Stroke | 190 mm x 1216 mm (7.5 in x 48 in) 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) 170 mm x 722 mm (6.7 in x 28.4 in) |
| Pilot System | Variable displacement piston Variable displacement piston |
Hydraulic Cycle Times
| Spec | Value |
|---|---|
| Rack Back | 3.8 s 3.8 s |
| Raise | 7.5 s 7.5 s |
| Dump | 3 s 3 s |
| Lower Float Down | 4.6 s 4.6 s |
| Total Hydraulic Cycle Time – Empty Bucket | 18.9 s 18.9 s |
Hydraulic System - Steering
| Spec | Value |
|---|---|
| Steering System – Circuit | Pilot, load sensing Pilot, load sensing |
| Steering System – Pump | Piston, variable displacement Piston, variable displacement |
| Maximum Flow | 52 gal (US) 200 l/min |
| Relief Valve Setting – Steering | 4000 psi 27600 kPa |
| Total Steering Angle | 70° 70° |
| Steering Cycle Times – High Idle | 3 s 3 s |
| Steering Cycle Times – Low Idle | 5.2 s 5.2 s |
Air Conditioning System
| Spec | Value |
|---|---|
| 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). 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
| Spec | Value |
|---|---|
| Front | Fixed Fixed |
| Rear | Trunnion Trunnion |
| Oscillation Angle | +/-12.5° +/-12.5° |
Brakes
| Spec | Value |
|---|---|
| Brakes | ISO 3450:2011 ISO 3450:2011 |
Operator's Cab
| Spec | Value |
|---|---|
| ROPS/FOPS | ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards |
Sound Performance - Tier 4 Final / Stage V
| Spec | Value |
|---|---|
| Operator Sound Pressure Level (ISO 6396:2008) | 73 dB(A) 73 dB(A) |
| Machine Sound Power Level (ISO 6395:2008) | 113 dB(A) 113 dB(A) |
| Operator Sound Pressure Level (ISO 6396:2008)* | 72 dB(A) 72 dB(A) |
| Machine Sound Power Level (ISO 6395:2008)** | 110 dB(A) 110 dB(A) |
| Note (1) | * For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives.” * 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. ** 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. 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. 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. 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
| Spec | Value |
|---|---|
| Operator Sound Pressure Level (ISO 6396:2008) | 74 dB(A) 74 dB(A) |
| Machine Sound Power Level (ISO 6395:2008) | 113 dB(A) 113 dB(A) |
| Operator Sound Pressure Level (ISO 6396:2008)* | 73 dB(A) 73 dB(A) |
| Machine Sound Power Level (ISO 6395:2008)** | 110 dB(A) 110 dB(A) |
| Note (1) | * For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives.” * 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. ** 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. 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. 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. 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
| Spec | Value |
|---|---|
| Fuel Tank | 141 gal (US) 535 l |
| Cooling System | 27 gal (US) 101 l |
| Engine Crankcase | 9 gal (US) 34 l |
| Diesel Exhaust Fluid Tank | 5.5 gal (US) 21 l |
| Transmission | 20 gal (US) 75 l |
| Differential – Final Drives – Front | 49 gal (US) 186 l |
| Differential – Final Drives – Rear | 45 gal (US) 170 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). 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). |
Dimensions (Approximate) - High Lift
| Spec | Value |
|---|---|
| Ground to Top of ROPS | 13.5 ft 4100 mm |
| Ground to Top of Exhaust Stacks | 13.3 ft 4060 mm |
| Ground to Top of Hood | 10.7 ft 3270 mm |
| Rear Axle – Centerline to Bumper | 10.3 ft 3132 mm |
| Front Axle Centerline to Bucket Tip | 15.7 ft 4773 mm |
| Wheel Base | 12.5 ft 3810 mm |
| Maximum Overall Length | 39.5 ft 12042 mm |
| Ground to Lower Hitch Clearance | 1.5 ft 459 mm |
| Clearance at Maximum Lift | 12 ft 3732 mm |
| B-Pin Height – Maximum Lift | 18.7 ft 5755 mm |
| Maximum Overall Height – Bucket Raised | 25 ft 7582 mm |
| Reach – Maximum Lift | 7.7 ft 2342 mm |
| Note | Specifications are calculated with 6.9 m3 (9.0 yd3 ) rock bucket equipped with Michelin XLDD1 35/65 R33 tires. 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
- 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
- Engine block heater 120V or 240V
- 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
- Cold Weather Starting