988 Wheel Loader

Net Power
541 HP
Engine Model
Cat® C18 ™
Bore
5.7 in
Stroke
7.2 in

Specs

Engine

Net Power
541HP
Engine Model
Cat® C18 ™
Bore
5.7in
Stroke
7.2in
Displacement
1105in³
Torque Rise
58%
Rated Speed
1700/min
Peak Power Speed - 1,500 rpm - Gross - ISO 14396
580HP
Peak Power Speed
1500/rpm
Peak Power Speed - 1,500 rpm - Gross - SAE J1995
588HP
Net Power - SAE J1349
541HP
Peak Torque - 1,200 rpm
2230lb/ft
Emissions
U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349
541HP
Gross - ISO 14396
580HP
Engine Power - ISO 14396
580HP
Gross Power - SAE J1995
588HP

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

Operator Sound Level (ISO 6396)
72dB(A)
Machine Sound Level (ISO 6395)
111dB(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
112574lb
Bucket Capacity Range
4.7-13 m3 (6.2-17 yd3)
Rated Payload - Loose Material
16t
Rated Payload - Quarry Face
12.5t
Cat Truck Match - High Lift
773~775
Cat Truck Match - Standard
770~772

Transmission

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 2
7.8mile/h
Direct Drive - Reverse 2
8.9mile/h
Direct Drive - Forward 4
24.4mile/h
Direct Drive - Reverse 3
15.8mile/h
Direct Drive - Reverse 1
5mile/h
Direct Drive - Forward 3
13.9mile/h
Direct Drive - Forward 1
Lock-up disabled

Hydraulic System - Lift/Tilt

Relief Valve Setting - Main
551psi
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
153gal/min
Relief Valve Setting - Lift/Tilt
4757psi
Maximum Flow
13.7gal/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
188gal (US)
Cooling System
31.7gal (US)
Crankcase
15.9gal (US)
Transmission
31.7gal (US)
Hydraulic System - Tank Only
63.4gal (US)
Differential - Final Drives - Rear
49.1gal (US)
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only)
8.7gal (US)
Differential - Final Drives - Front
49.1gal (US)
Hydraulic System Factory Fill
125.5gal (US)
Coolant (Validated by Test Cell Fill Quantities)
33gal (US)
Transmission - Validated by Test Cell Fill Quantities
29gal (US)
Diesel Exhaust Fluid Tank
8.7gal (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
71.3gal/min
Total Steering Angle
86 °
Relief Valve Setting - Steering
4351psi
Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Steering Cycle Times - Low Idle
5.6s
Steering Cycle Times - High Idle
3.4s

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

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

Sound Performance - Tier 4 Final/Stage IV - Standard

Machine Sound Level (ISO 6395)
111dB(A)
Operator Sound Level (ISO 6396)
72dB(A)

Sound Performance - Tier 4 Final/Stage IV: Suppression

Operator Sound Level (ISO 6396)
72dB(A)
Machine Sound Level (ISO 6395)
109dB(A)

Sound Performance - Tier 2 Equivalent/Stage II: Standard

Machine Sound Level (ISO 6395)
112dB(A)
Operator Sound Level (ISO 6396)
73dB(A)

Sound Performance - Tier 2 Equivalent/Stage II: Suppression

Machine Sound Level (ISO 6395)
110dB(A)
Operator Sound Level (ISO 6396)
72dB(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
13.8ft
Ground to Top of Hood
10.9ft
Ground to Top of Exhaust Stacks
14.8ft
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

Dimensions (Approximate) - High Lift Linkage

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

Features

PROVEN RELIABILITY

LONG TERM VALUE AND DURABILITY

PERFORMANCE AND PRODUCTIVITY

PERFORMANCE WITH LESS FUEL

PRODUCTIVITY WITH TECHNOLOGY

SAFETY FIRST

SAVE ON SERVICE AND MAINTENANCE

OPERATOR COMFORT AND CONTROL

PURPOSE-BUILT SPECIALTY MODELS - BLOCK HANDLER

PURPOSE-BUILT SPECIALTY MODELS - MILLYARD

PURPOSE-BUILT SPECIALTY MODELS - STEEL MILL

Standard Equipment

  • 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
    • Starter emergency 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

Optional Equipment

  • 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
  • Miscellaneous Attachments
    • Load and carry 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
    • Aggregate Handler