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988 Wheel Loader

988 Wheel Loader

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More Comfort – More Performance – More Versatility

  • BETTER FUEL EFFICIENCY

    Utilizing Economy Mode helps save on fuel all while maintaining productivity

  • EASIER MAINTENANCE

    Make regular maintenance more convenient with grouped service points

  • MORE PRODUCTIVITY

    Deliver more productivity in most truck loading applications while using performance series buckets with increased capacities

Engine

Bore 5.7 in
Displacement 1105 inÂł
Engine Model Cat® C18
Engine Power - ISO 14396:2002 580 hp
Gross Power - SAE J1995:2014 588 hp
Net Power - SAE J1349:2011 538 hp
Note (1) Three engine emission options are available: 1. Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards. 2. Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA. 3. Meets China Nonroad Stage IV emission standards.
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.
Peak Power Speed 1500/rpm
Peak Torque - 1,200 rpm 2104 lbf·ft
Rated Speed 1700/rpm
Stroke 7.2 in
Torque Rise 58 %

Operating Specifications

Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3)
Cat Truck Match - High Lift 773 - 775
Cat Truck Match - Standard 770 - 772
Operating Weight 112574 lb
Rated Payload - Loose Material 16 t
Rated Payload - Quarry Face 12.5 t

Transmission

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

Hydraulic System - Lift/Tilt

Cylinders, Double Acting - Lift, Bore and Stroke 210 mm Ă— 1050 mm (8.7 in Ă— 41.3 in)
Cylinders, Double Acting - Tilt, Bore and Stroke 266 mm Ă— 685 mm (8.7 in Ă— 27 in)
Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing
Lift/Tilt System - Pump Variable displacement piston
Maximum Flow at 1,400-1,860 rpm 153 gal/min
Pilot System Variable displacement piston
Relief Valve Setting - Lift/Tilt 4757 psi
Relief Valve Setting - Main 551 psi

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

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

Hydraulic System - Steering

Maximum Flow at 1,400-1,600 rpm 71.3 gal/min
Relief Valve Setting - Steering 4351 psi
Steering Cycle Times - High Idle 3.4 s
Steering Cycle Times - Low Idle 5.6 s
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Total Steering Angle 86 °

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
Oscillation Angle 13 °
Rear Trunnion

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

Machine Sound Power Level (ISO 6395:2008) 111 dB(A)
Machine Sound Power Level (ISO 6395:2008)** 109 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) 73 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)* 72 dB(A)

Sound Performance - Tier 3 / Stage IIIA

Machine Sound Power Level (ISO 6395:2008) 112 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) 73 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)* 72 dB(A)

Service Refill Capacities

Coolant (Validated by Test Cell Fill Quantities) 33 gal (US)
Cooling System 31.7 gal (US)
Crankcase 15.9 gal (US)
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage V Only) 8.7 gal (US)
Differential - Final Drives - Front 49.1 gal (US)
Differential - Final Drives - Rear 49.1 gal (US)
Fuel Tank 188 gal (US)
Hydraulic System - Tank Only 63.4 gal (US)
Hydraulic System Factory Fill 125.5 gal (US)
Note • All non-road Tier 4 Final/Stage V diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or 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. • Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).** • For pre-Tier 4 engines: Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: – 100% 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. * For use of blends higher than 20% biodiesel, consult your Cat dealer. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.
Transmission 24.3 gal (US)
Transmission - Validated by Test Cell Fill Quantities 29 gal (US)

Dimensions (Approximate) - Standard Lift Linkage

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

Dimensions (Approximate) - High Lift Linkage

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

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Engine

Bore 5.7 in
Displacement 1105 inÂł
Engine Model Cat® C18
Engine Power - ISO 14396:2002 580 hp
Gross Power - SAE J1995:2014 588 hp
Net Power - SAE J1349:2011 538 hp
Note (1) Three engine emission options are available: 1. Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards. 2. Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA. 3. Meets China Nonroad Stage IV emission standards.
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.
Peak Power Speed 1500/rpm
Peak Torque - 1,200 rpm 2104 lbf·ft
Rated Speed 1700/rpm
Stroke 7.2 in
Torque Rise 58 %

Operating Specifications

Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3)
Cat Truck Match - High Lift 773 - 775
Cat Truck Match - Standard 770 - 772
Operating Weight 112574 lb
Rated Payload - Loose Material 16 t
Rated Payload - Quarry Face 12.5 t

Transmission

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

Hydraulic System - Lift/Tilt

Cylinders, Double Acting - Lift, Bore and Stroke 210 mm Ă— 1050 mm (8.7 in Ă— 41.3 in)
Cylinders, Double Acting - Tilt, Bore and Stroke 266 mm Ă— 685 mm (8.7 in Ă— 27 in)
Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing
Lift/Tilt System - Pump Variable displacement piston
Maximum Flow at 1,400-1,860 rpm 153 gal/min
Pilot System Variable displacement piston
Relief Valve Setting - Lift/Tilt 4757 psi
Relief Valve Setting - Main 551 psi

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

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

Hydraulic System - Steering

Maximum Flow at 1,400-1,600 rpm 71.3 gal/min
Relief Valve Setting - Steering 4351 psi
Steering Cycle Times - High Idle 3.4 s
Steering Cycle Times - Low Idle 5.6 s
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Total Steering Angle 86 °

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
Oscillation Angle 13 °
Rear Trunnion

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

Machine Sound Power Level (ISO 6395:2008) 111 dB(A)
Machine Sound Power Level (ISO 6395:2008)** 109 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) 73 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)* 72 dB(A)

Sound Performance - Tier 3 / Stage IIIA

Machine Sound Power Level (ISO 6395:2008) 112 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) 73 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)* 72 dB(A)

Service Refill Capacities

Coolant (Validated by Test Cell Fill Quantities) 33 gal (US)
Cooling System 31.7 gal (US)
Crankcase 15.9 gal (US)
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage V Only) 8.7 gal (US)
Differential - Final Drives - Front 49.1 gal (US)
Differential - Final Drives - Rear 49.1 gal (US)
Fuel Tank 188 gal (US)
Hydraulic System - Tank Only 63.4 gal (US)
Hydraulic System Factory Fill 125.5 gal (US)
Note • All non-road Tier 4 Final/Stage V diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or 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. • Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).** • For pre-Tier 4 engines: Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels** up to: – 100% 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. * For use of blends higher than 20% biodiesel, consult your Cat dealer. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.
Transmission 24.3 gal (US)
Transmission - Validated by Test Cell Fill Quantities 29 gal (US)

Dimensions (Approximate) - Standard Lift Linkage

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

Dimensions (Approximate) - High Lift Linkage

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

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