988 Wheel Loader

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Cat® Large Wheel Loaders are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a low cost per ton. Introduced in 1963, the 988 has been an industry leader for 60 years. Focused on helping our customers succeed, we have continued to build upon each new series. The 988 continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.

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Net Power - SAE J1349:2011

538hp

Engine Power - ISO 14396:2002

580hp

Gross Power - SAE J1995:2014

588hp

Engine Model

Cat® C18 ™

Rated Speed

1700/min

Peak Power Speed

1500/rpm

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

Bore

5.7in

Stroke

7.2in

Displacement

1105in³

Peak Torque - 1,200 rpm

2230lb/ft

Torque Rise

58%

Operating Weight

112574lb

Rated Payload - Quarry Face

12.5t

Rated Payload - Loose Material

16t

Bucket Capacity Range

4.7-13 m3 (6.2-17 yd3)

Cat Truck Match - Standard

770～772

Cat Truck Match - High Lift

773～775

Transmission Type

Cat planetary powershift

Forward - 1

4mile/h

Forward - 2

7.2mile/h

Forward - 3

12.7mile/h

Forward - 4

21.6mile/h

Reverse - 1

4.7mile/h

Reverse - 2

8.3mile/h

Reverse - 3

14.4mile/h

Direct Drive - Forward 1

Lock-up disabled

Direct Drive - Forward 2

7.8mile/h

Direct Drive - Forward 3

13.9mile/h

Direct Drive - Forward 4

24.4mile/h

Direct Drive - Reverse 1

5mile/h

Direct Drive - Reverse 2

8.9mile/h

Direct Drive - Reverse 3

15.8mile/h

Lift/Tilt System - Circuit

EH- Positive Flow Control, Flow Sharing

Lift/Tilt System

Variable displacement piston

Maximum Flow at 1,400-1,860 rpm

153gal/min

Relief Valve Setting - Lift/Tilt

4757psi

Cylinders, Double Acting - Lift, Bore and Stroke

210 mm × 1050 mm (8.7 in × 41.3 in)

Cylinders, Double Acting - Tilt, Bore and Stroke

269 mm × 685 mm (8.7 in × 27 in)

Pilot System

Variable displacement piston

Relief Valve Setting - Main

551psi

Rack Back

4.5s

Raise

Dump

2.2s

Lower Float Down

3.5s

Total Hydraulic Cycle Time - Empty Bucket

18.2s

Steering System - Circuit

Pilot, load sensing

Steering System - Pump

Piston, variable displacement

Maximum Flow

71.3gal/min

Relief Valve Setting - Steering

4351psi

Total Steering Angle

86 °

Steering Cycle Times - High Idle

3.4s

Steering Cycle Times - Low Idle

5.6s

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.

Front

Fixed

Rear

Trunnion

Oscillation Angle

13 °

Brakes

ISO 3450:2011

ROPS/FOPS

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

Fuel Tank

188gal (US)

Cooling System

31.7gal (US)

Coolant (Validated by Test Cell Fill Quantities)

33gal (US)

Crankcase

15.9gal (US)

Diesel Exhaust Fluid Tank

8.7gal (US)

Transmission

31.7gal (US)

Transmission - Validated by Test Cell Fill Quantities

29gal (US)

Differential - Final Drives - Front

49.1gal (US)

Differential - Final Drives - Rear

49.1gal (US)

Hydraulic System Factory Fill

125.5gal (US)

Hydraulic System - Tank Only

63.4gal (US)

Operator Sound Pressure Level (ISO 6396:2008)

73dB(A)

Machine Sound Power Level (ISO 6395:2008)

111dB(A)

Operator Sound Pressure Level (ISO 6396:2008)

73dB(A)

Machine Sound Power Level (ISO 6395:2008)

112dB(A)

Ground to Top of ROPS

13.8ft

Ground to Top of Exhaust Stacks

14.8ft

Ground to Top of Hood

10.9ft

Rear Axle - Centerline to Bumper

10.5ft

Front Axle Centerline to Bucket Tip

14ft

Wheel Base

14.9ft

Maximum Overall Length

39.3ft

Ground to Lower Hitch Clearance

1.9ft

Clearance at Maximum Lift

11.9ft

B-Pin Height - Maximum Lift

18ft

Maximum Overall Height - Bucket Raised

24.5ft

Reach - Maximum Lift

6.5ft

Ground to Top of ROPS

13.8ft

Ground to Top of Exhaust Stacks

14.8ft

Ground to Top of Hood

10.9ft

Rear Axle - Centerline to Bumper

10.5ft

Front Axle Centerline to Bucket Tip

15.3ft

Wheel Base

14.9ft

Maximum Overall Length

40.7ft

Ground to Lower Hitch Clearance

1.9ft

Clearance at Maximum Lift

13.3ft

B-Pin Height - Maximum Lift

19.3ft

Maximum Overall Height - Bucket Raised

25.8ft

Reach - Maximum Lift

6.8ft

Bucket Capacities

4.7-13 m3 (6.2-17 yd3)

Note
- Standard and optional equipment may vary. Consult your Cat dealer for details.
Power Train
- –50° C (–58° F) antifreeze
- Engine oil change system, high speed, Wiggins
- High ambient cooling – software
- Cat Production Measurement
Operator Environment
- Cab precleaner
- AM/FM/CD/MP3 radio
- Satellite Sirius radio with bluetooth
- LED warning strobe
- CB radio ready
- Window pull down visor
- Handrail mounted mirrors
Additional Equipment
- Additional counterweight
- Front and rear roading fenders
- Fast fill fuel system (Shaw-Aero)
- Cold Weather Starting (extra starter plus two batteries), engine block heater 120V or 240V, heated fuel lines
Other Optional Configurations
- Aggregate Handler

Note
- Standard and optional equipment may vary. Consult your Cat dealer for details.
Electrical
- Alarm, back-up
- Alternator, single 150 amp
- Batteries, dry
- Converter, 10/15 amp, 24V to 12V
- Lighting system (halogen, work lights, access and service platform lighting)
- Starting and charging system, 24V
- Jump start receptacle
- Starter lockout in bumper
- Transmission lockout in bumper
Operator Environment
- 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 (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 – Power train oil temperature
- Light, cab, dome
- Lunchbox, beverage holders
- Mirrors, rearview (externally mounted)
- Rimpull Control System
- Seat, deluxe
- Seat belt minder
- Seat belt, retractable, 76 mm (3 in) wide
- STIC Control System
- UV glass
- Transmission gear indicator
- Vital Information Management System (VIMS) with Graphical Information Display: External Data Port, Customizable Operator Profiles, Cycle Timer, Integrated Payload Control System
- Wet-Arm wipers/washers (front and rear): – Intermittent front and rear wipers
- Lights, directional
Power Train
- Brakes, oil-cooled, multi-disc, service/secondary
- Case drain screens
- Crankcase guard
- Electro hydraulic parking brake
- Engine, C18 MEUI diesel, turbocharged/aftercooled
- Ground level engine shutoff
- Turbine precleaner, engine air intake
- Radiator, Aluminum Modular Radiator (AMR)
- Starting aid, ether, automatic
- Throttle lock, electronic
- Torque converter, Impeller Clutch (ICTC) with Lock up clutch (LUC), Rimpull Control System
- Transmission, planetary powershift, 4F/3R electronic control
- Manual switch and automatic fuel priming
- Cat Production Measurement ready
Other
- 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, 712 L (188 gal)
- Hitch, drawbar with pin
- Hoses, Cat XT^™
- Hydraulic, steering and brake filtration/screening system
- Cat Clean Emission Module
- Oil sampling valves
- Premixed 50% 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

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