988 Wheel Loader

Engine

Net Power

541 HP

Engine Model

Cat® C18 ™

Bore

6 in

Stroke

7 in

Displacement

1,105 in³

Torque Rise

58 %

Rated Speed

1700/min

Peak Power Speed - 1,500 rpm - Gross - ISO 14396

580 HP

Peak Power Speed

1500/rpm

Peak Power Speed - 1,500 rpm - Gross - SAE J1995

588 HP

Net Power - SAE J1349

541 HP

Peak Torque - 1,200 rpm

2,230 lb/ft

Emissions

U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards, Brazil MAR-1 and China Nonroad Stage IV emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA, and U.S. EPA Tier 2 and EU Stage II

Peak Power Speed - 1,500 rpm - Net Power - SAE J1349

541 HP

Gross - ISO 14396

580 HP

Engine Power - ISO 14396

580 HP

Gross Power - SAE J1995

588 HP

Net Power - SAE J1349:2011

541 HP

Engine Power - ISO 14396:2002

580 HP

Gross Power - SAE J1995:2014

588 HP

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

Operator Sound Level (ISO 6396)

72 dB(A)

Machine Sound Level (ISO 6395)

111 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.

Operating Specifications

Operating Weight

112,574 lb

Bucket Capacity Range

4.7-13 m3 (6.2-17 yd3)

Rated Payload - Loose Material

16 t

Rated Payload - Quarry Face

13 t

Cat Truck Match - High Lift

773～775

Cat Truck Match - Standard

770～772

Transmission

Transmission Type

Cat planetary powershift

Forward - 1

4 mile/h

Forward - 2

7 mile/h

Forward - 3

13 mile/h

Forward - 4

22 mile/h

Reverse - 1

5 mile/h

Reverse - 2

8 mile/h

Reverse - 3

14 mile/h

Direct Drive - Forward 2

8 mile/h

Direct Drive - Reverse 2

9 mile/h

Direct Drive - Forward 4

24 mile/h

Direct Drive - Reverse 3

16 mile/h

Direct Drive - Reverse 1

5 mile/h

Direct Drive - Forward 3

14 mile/h

Direct Drive - Forward 1

Lock-up disabled

Hydraulic System - Lift/Tilt

Relief Valve Setting - Main

551 psi

Cylinders, Double Acting - Tilt, Bore and Stroke

269 mm × 685 mm (8.7 in × 27 in)

Pilot System

Variable displacement piston

Maximum Flow at 1,400-1,860 rpm

153 gal/min

Relief Valve Setting - Lift/Tilt

4,757 psi

Maximum Flow

14 gal/min

Cylinders, Double Acting - Lift, Bore and Stroke

210 mm × 1050 mm (8.7 in × 41.3 in)

Lift/Tilt System

Variable displacement piston

Lift/Tilt System - Circuit

EH- Positive Flow Control, Flow Sharing

Service Refill Capacities

Fuel Tank

188 gal (US)

Cooling System

32 gal (US)

Crankcase

16 gal (US)

Transmission

32 gal (US)

Hydraulic System - Tank Only

63 gal (US)

Differential - Final Drives - Rear

49 gal (US)

Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only)

9 gal (US)

Differential - Final Drives - Front

49 gal (US)

Hydraulic System Factory Fill

126 gal (US)

Coolant (Validated by Test Cell Fill Quantities)

33 gal (US)

Transmission - Validated by Test Cell Fill Quantities

29 gal (US)

Diesel Exhaust Fluid Tank

9 gal (US)

Buckets

Bucket Capacities

4.7-13 m3 (6.2-17 yd3)

Axles

Front

Fixed

Rear

Trunnion

Oscillation Angle

13 °

Brakes

Brakes

ISO 3450:2011

Hydraulic System - Steering

Maximum Flow

71 gal/min

Total Steering Angle

86 °

Relief Valve Setting - Steering

4,351 psi

Steering System - Circuit

Pilot, load sensing

Steering System - Pump

Piston, variable displacement

Steering Cycle Times - Low Idle

6 s

Steering Cycle Times - High Idle

3 s

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

Dump

2 s

Total Hydraulic Cycle Time - Empty Bucket

18 s

Rack Back

5 s

Lower Float Down

4 s

Raise

8 s

Sound Performance - Tier 4 Final/Stage IV - Standard

Machine Sound Level (ISO 6395)

111 dB(A)

Operator Sound Level (ISO 6396)

72 dB(A)

Sound Performance - Tier 4 Final/Stage IV: Suppression

Operator Sound Level (ISO 6396)

72 dB(A)

Machine Sound Level (ISO 6395)

109 dB(A)

Sound Performance - Tier 2 Equivalent/Stage II: Standard

Machine Sound Level (ISO 6395)

112 dB(A)

Operator Sound Level (ISO 6396)

73 dB(A)

Sound Performance - Tier 2 Equivalent/Stage II: Suppression

Machine Sound Level (ISO 6395)

110 dB(A)

Operator Sound Level (ISO 6396)

72 dB(A)

Air Conditioning System

Air Conditioning

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes.

Operator's Cab

ROPS/FOPS

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

Dimensions (Approximate) - Standard Lift Linkage

Ground to Top of ROPS

14 ft

Ground to Top of Hood

11 ft

Ground to Top of Exhaust Stacks

15 ft

Rear Axle - Centerline to Bumper

11 ft

Front Axle Centerline to Bucket Tip

14 ft

Wheel Base

15 ft

Maximum Overall Length

39 ft

Ground to Lower Hitch Clearance

2 ft

Clearance at Maximum Lift

12 ft

B-Pin Height - Maximum Lift

18 ft

Maximum Overall Height - Bucket Raised

25 ft

Reach - Maximum Lift

7 ft

Dimensions (Approximate) - High Lift Linkage

Ground to Top of ROPS

14 ft

Ground to Top of Exhaust Stacks

15 ft

Ground to Top of Hood

11 ft

Rear Axle - Centerline to Bumper

11 ft

Front Axle Centerline to Bucket Tip

15 ft

Wheel Base

15 ft

Maximum Overall Length

41 ft

Ground to Lower Hitch Clearance

2 ft

Clearance at Maximum Lift

13 ft

B-Pin Height - Maximum Lift

19 ft

Maximum Overall Height - Bucket Raised

26 ft

Reach - Maximum Lift

7 ft

Sound Performance - Tier 4 Final / Stage V - Standard

Operator Sound Pressure Level (ISO 6396:2008)

73 dB(A)

Machine Sound Power Level (ISO 6395:2008)

111 dB(A)

Sound Performance - Tier 3 / Stage III - Standard

Operator Sound Pressure Level (ISO 6396:2008)

73 dB(A)

Machine Sound Power Level (ISO 6395:2008)

112 dB(A)