988 Wheel Loader

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.

  • Net Power - SAE J1349:2011 538 hp

  • Engine Power - ISO 14396:2002 580 hp

  • Gross Power - SAE J1995:2014 588 hp

  • Engine Model Cat® C18 ™

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Product Specifications

Specifications

Engine

  • Bore 5.7in

  • Displacement 1105in³

  • 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

  • Engine Model Cat® C18 ™

  • Engine Power - ISO 14396:2002 580hp

  • Gross Power - SAE J1995:2014 588hp

  • Net Power - SAE J1349:2011 538hp

  • Peak Power Speed 1500/rpm

  • Peak Torque - 1,200 rpm 2230lb/ft

  • Rated Speed 1700/min

  • Stroke 7.2in

  • 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 112574lb

  • Rated Payload - Loose Material 16t

  • Rated Payload - Quarry Face 12.5t

Transmission

  • 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

  • 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

  • Transmission Type Cat planetary powershift

Hydraulic System - Lift/Tilt

  • 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)

  • Lift/Tilt System Variable displacement piston

  • Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing

  • Maximum Flow at 1,400-1,860 rpm 153gal/min

  • Pilot System Variable displacement piston

  • Relief Valve Setting - Lift/Tilt 4757psi

  • Relief Valve Setting - Main 551psi

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

  • Dump 2.2s

  • Lower Float Down 3.5s

  • Rack Back 4.5s

  • Raise 8s

  • Total Hydraulic Cycle Time - Empty Bucket 18.2s

Hydraulic System - Steering

  • Maximum Flow 71.3gal/min

  • Relief Valve Setting - Steering 4351psi

  • Steering Cycle Times - High Idle 3.4s

  • Steering Cycle Times - Low Idle 5.6s

  • 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 (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes.

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

Service Refill Capacities

  • Coolant (Validated by Test Cell Fill Quantities) 33gal (US)

  • Cooling System 31.7gal (US)

  • Crankcase 15.9gal (US)

  • Diesel Exhaust Fluid Tank 8.7gal (US)

  • Differential - Final Drives - Front 49.1gal (US)

  • Differential - Final Drives - Rear 49.1gal (US)

  • Fuel Tank 188gal (US)

  • Hydraulic System - Tank Only 63.4gal (US)

  • Hydraulic System Factory Fill 125.5gal (US)

  • Transmission 31.7gal (US)

  • Transmission - Validated by Test Cell Fill Quantities 29gal (US)

Sound Performance - Tier 4 Final / Stage V - Standard

  • Machine Sound Power Level (ISO 6395:2008) 111dB(A)

  • Operator Sound Pressure Level (ISO 6396:2008) 73dB(A)

Sound Performance - Tier 3 / Stage III - Standard

  • Machine Sound Power Level (ISO 6395:2008) 112dB(A)

  • Operator Sound Pressure Level (ISO 6396:2008) 73dB(A)

Dimensions (Approximate) - Standard Lift Linkage

  • B-Pin Height - Maximum Lift 18ft

  • Clearance at Maximum Lift 11.9ft

  • Front Axle Centerline to Bucket Tip 14ft

  • Ground to Lower Hitch Clearance 1.9ft

  • Ground to Top of Exhaust Stacks 14.8ft

  • Ground to Top of Hood 10.9ft

  • Ground to Top of ROPS 13.8ft

  • Maximum Overall Height - Bucket Raised 24.5ft

  • Maximum Overall Length 39.3ft

  • Reach - Maximum Lift 6.5ft

  • Rear Axle - Centerline to Bumper 10.5ft

  • Wheel Base 14.9ft

Dimensions (Approximate) - High Lift Linkage

  • B-Pin Height - Maximum Lift 19.3ft

  • Clearance at Maximum Lift 13.3ft

  • Front Axle Centerline to Bucket Tip 15.3ft

  • Ground to Lower Hitch Clearance 1.9ft

  • Ground to Top of Exhaust Stacks 14.8ft

  • Ground to Top of Hood 10.9ft

  • Ground to Top of ROPS 13.8ft

  • Maximum Overall Height - Bucket Raised 25.8ft

  • Maximum Overall Length 40.7ft

  • Reach - Maximum Lift 6.8ft

  • Rear Axle - Centerline to Bumper 10.5ft

  • Wheel Base 14.9ft

Buckets

  • Bucket Capacities 4.7-13 m3 (6.2-17 yd3)

Features

Equipment

Standard Equipment

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

  • 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

  • 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

  • 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

  • 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

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

  • –50° C (–58° F) antifreeze

  • Engine oil change system, high speed, Wiggins

  • High ambient cooling – software

  • Cat Production Measurement

  • 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 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