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988K 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 lower cost per ton. Introduced in 1963, the 988 has been the industry leader for 50 years. Focused on helping our customers succeed, we have continued to build upon each new series. The 988K continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.

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Net Power541HP

Engine ModelCat® C18 ™

Bore5.7in

Stroke7.2in

Displacement1105in³

Torque Rise58%

Rated Speed1700/min

Peak Torque - 1,200 rpm2104lb/ft

Net Power - SAE J1349541HP

Peak Power Speed1500/min

Peak Power Speed - 1,500 rpm - Gross - ISO 14396580HP

Gross - ISO 14396580HP

Peak Power Speed - 1,500 rpm - Gross - SAE J1995588HP

EmissionsU.S. EPA Tier 4 Final/EU Stage V OR Tier 3/Stage IIIA Equivalent OR Tier 2/Stage II Equivalent

Peak Power Speed - 1,500 rpm - Net Power - SAE J1349541HP

Operating Weight112574lb

Bucket Capacity Range4.7-13 m3 (6.2-17 yd3)

Rated Payload - Quarry Face12.5t

Cat Truck Match - High Lift773~775

Rated Payload - Loose Material16t

Cat Truck Match - Standard770~772

Bucket Capacities4.7-13 m3 (6.2-17 yd3)

Transmission TypeCat-Planetenlastschaltgetriebe

Forward - 14mile/h

Forward - 27.2mile/h

Forward - 312.7mile/h

Forward - 421.6mile/h

Reverse - 14.7mile/h

Reverse - 28.3mile/h

Reverse - 314.4mile/h

Direct Drive - Reverse 28.9mile/h

Direct Drive - Reverse 315.8mile/h

Direct Drive - Forward 27.8mile/h

Direct Drive - Reverse 15mile/h

Direct Drive - Forward 1Lock-up disabled

Direct Drive - Forward 313.9mile/h

Direct Drive - Forward 424.4mile/h

FrontFixed

RearTrunnion

Oscillation Angle13 °

Fuel Tank188gal (US)

Cooling System31.7gal (US)

Crankcase15.9gal (US)

Transmission31.7gal (US)

Hydraulic System - Tank Only63.4gal (US)

Differential - Final Drives - Rear49.1gal (US)

Hydraulic System Factory Fill125.5gal (US)

Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only)8.7gal (US)

Differential - Final Drives - Front49.1gal (US)

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

Transmission - Validated by Test Cell Fill Quantities29gal (US)

Maximum Flow13.7gal/min

Maximum Flow at 1,400-1,860 rpm153gal/min

Lift/Tilt SystemVariable displacement piston

Cylinders, Double Acting - Tilt, Bore and Stroke269 mm × 685 mm (8.7 in × 27 in)

Relief Valve Setting - Main551psi

Relief Valve Setting - Lift/Tilt4757psi

Pilot SystemVariable displacement piston

Cylinders, Double Acting - Lift, Bore and Stroke210 mm × 1050 mm (8.7 in × 41.3 in)

Lift/Tilt System - CircuitEH- Positive Flow Control, Flow Sharing

Steering System - PumpPiston, variable displacement

Total Steering Angle86 °

Maximum Flow71.3gal/min

Relief Valve Setting - Steering4351psi

Steering Cycle Times - High Idle3.4s

Steering System - CircuitPilot, load sensing

Steering Cycle Times - Low Idle5.6s

Total Hydraulic Cycle Time - Empty Bucket18.2s

Lower Float Down3.5s

Rack Back4.5s

Raise8s

Dump2.2s

Operator Sound Level (ISO 6396)72dB(A)

Machine Sound Level (ISO 6395)111dB(A)

Machine Sound Level (ISO 6395)109dB(A)

Operator Sound Level (ISO 6396)72dB(A)

Operator Sound Level (ISO 6396)72dB(A)

Machine Sound Level (ISO 6395)110dB(A)

Machine Sound Level (ISO 6395)112dB(A)

Operator Sound Level ( ISO 6396)73dB(A)

BrakesSAE J1473 OKT90, ISO 3450:1992

Standard

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

Optional

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

Standard

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

Standard

Graphical Information Display, displays real time operating information, performs calibrations and customizes operator settings

Air conditioner

Cat Detect 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, Cat Comfort (cloth), air suspension, six-way adjustable

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

Optional

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

Standard

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

Optional

–50° C (–58° F) antifreeze

Engine oil change system, high speed, Wiggins

Engine block heater 120V or 240V

High ambient cooling – software

Cat Production Measurement

Standard

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, 731 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

Front and rear roading fenders

Fast fill fuel system (Shaw-Aero)

Cold Weather Starting (extra starter plus two batteries)

Aggregate Handler

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