988 Wheel Loader

At a Glance

Net Power - SAE J1349:2011

541 HP

Engine Power - ISO 14396:2002

580 HP

Gross Power - SAE J1995:2014

588 HP

Engine Model

Cat® C18 ™

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Overview

Engine

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Net Power - SAE J1349:2011	541HP
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 Specifications

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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

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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

Hydraulic System - Lift/Tilt

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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

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

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

Hydraulic System - Steering

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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 System

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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.

Axles

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Front	Fixed
Rear	Trunnion
Oscillation Angle	13 °

Brakes

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Brakes

ISO 3450:2011

Operator's Cab

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ROPS/FOPS

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

Service Refill Capacities

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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)

Sound Performance - Tier 4 Final / Stage V - Standard

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

Sound Performance - Tier 3 / Stage III - Standard

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

Dimensions (Approximate) - Standard Lift Linkage

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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

Dimensions (Approximate) - High Lift Linkage

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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

Buckets

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Bucket Capacities

4.7-13 m3 (6.2-17 yd3)

Standard Equipment:

Note

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Standard and optional equipment may vary. Consult your Cat dealer for details.

Electrical

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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

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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

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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

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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

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Standard and optional equipment may vary. Consult your Cat dealer for details.

Power Train

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–50° C (–58° F) antifreeze
Engine oil change system, high speed, Wiggins
High ambient cooling – software
Cat Production Measurement

Operator Environment

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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

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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

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Aggregate Handler

Featured Equipment

988 Wheel Loader

988 Wheel Loader

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360° Interior View

360° Interior View

At a Glance

Overview

Engine

Operating Specifications

Transmission

Hydraulic System - Lift/Tilt

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

Hydraulic System - Steering

Air Conditioning System

Axles

Brakes

Operator's Cab

Service Refill Capacities

Sound Performance - Tier 4 Final / Stage V - Standard

Sound Performance - Tier 3 / Stage III - Standard

Dimensions (Approximate) - Standard Lift Linkage

Dimensions (Approximate) - High Lift Linkage

Buckets

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

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

Hoses, Cat XT^™