988K Steel Mill Arrangement

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Overview

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.

Engine

Units:
Net Power 541.0 mm H2O 403.0 kg/mm Less
Engine Model Cat® C18 ACERT™ Cat® C18 ACERT™ Less
Net Power - SAE J1349 541.0 mm H2O 403.0 kg/mm Less
Bore 5.7 in 145.0 mm Less
Stroke 7.2 in 183.0 mm Less
Displacement 1105.0 in³ 18.1 l Less
Torque Rise 58.0 % 58.0 % Less
Rated Speed 1,700 rpm 1,700 rpm Less
Emissions U.S. EPA Tier 4 Final/EU Stage IV, Tier 2 Equivalent U.S. EPA Tier 4 Final/EU Stage IV, Tier 2 Equivalent Less
Gross - ISO 14396 580.0 mm H2O 432.0 kg/mm Less
Peak Power Speed 1,500 rpm 1,500 rpm Less
Peak Power Speed - 1,500 rpm - Gross - ISO 14396 580.0 mm H2O 432.0 kg/mm Less
Peak Power Speed - 1,500 rpm - Gross - SAE J1995 588.0 mm H2O 439.0 kg/mm Less
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349 541.0 mm H2O 403.0 kg/mm Less
Peak Torque - 1,200 rpm 2104.0 lb/ft 2852.0 N·m Less

Operating Specifications

Operating Weight 112574.0 lb 51062.0 null Less
Rated Payload 12.5 t 11.3 t Less
Rated Payload - Standard 12.5 t 11.3 t Less
Bucket Capacity Range 6.4-7.6 m3 (8.3-10 yd3) 6.4-7.6 m3 (8.3-10 yd3) Less
Cat Truck Match - Standard 770-772 770-772 Less
Cat Truck Match - High Lift 773-775 773-775 Less
Rated Payload - High Lift 12.5 t 11.3 t Less

Transmission

Transmission Type Cat planetary power shift Cat planetary power shift Less
Forward - 1 4.0 mile/h 6.5 km/h Less
Forward - 2 7.2 mile/h 11.6 km/h Less
Forward - 3 12.7 mile/h 20.4 km/h Less
Forward - 4 21.6 mile/h 34.7 km/h Less
Reverse - 1 4.7 mile/h 7.5 km/h Less
Reverse - 2 8.3 mile/h 13.3 km/h Less
Reverse - 3 14.4 mile/h 23.2 km/h Less
Direct Drive - Forward 1 Lock-up disabled Lock-up disabled Less
Direct Drive - Forward 2 7.8 mile/h 12.5 km/h Less
Direct Drive - Forward 3 13.9 mile/h 22.3 km/h Less
Direct Drive - Forward 4 24.4 mile/h 39.3 km/h Less
Direct Drive - Reverse 1 5.0 mile/h 8.0 km/h Less
Direct Drive - Reverse 2 8.9 mile/h 14.3 km/h Less
Direct Drive - Reverse 3 15.8 mile/h 25.5 km/h Less

Hydraulic System - Lift/Tilt

Cylinders, Double Acting - Lift, Bore and Stroke 210 mm × 1050 mm (8.3 in × 41.3 in) 210 mm × 1050 mm (8.3 in × 41.3 in) Less
Cylinders, Double Acting - Tilt, Bore and Stroke 267 mm × 685 mm (10.5 in × 27.0 in) 267 mm × 685 mm (10.5 in × 27.0 in) Less
Lift/Tilt System Variable displacement piston Variable displacement piston Less
Maximum Flow 13.7 gal/min 52.0 l/min Less
Maximum Flow at 1,400-1,860 rpm 153.0 gal/min 580.0 l/min Less
Pilot System Variable displacement piston Variable displacement piston Less
Relief Valve Setting 551.0 psi 3800.0 kPa Less
Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing EH- Positive Flow Control, Flow Sharing Less
Relief Valve Setting - Lift/Tilt 4757.0 psi 32800.0 kPa Less

Service Refill Capacities

Fuel Tank 181.0 gal (US) 686.0 l Less
Cooling System 31.7 gal (US) 120.0 l Less
Crankcase 15.9 gal (US) 60.0 l Less
Transmission 31.7 gal (US) 120.0 l Less
Differential - Final Drives - Front 49.1 gal (US) 186.0 l Less
Differential - Final Drives - Rear 49.1 gal (US) 186.0 l Less
Hydraulic System - Tank Only 63.4 gal (US) 240.0 l Less
Diesel Exhaust Fluid Tank (Tier 4) 8.7 gal (US) 33.0 l Less
Hydraulic System Factory Fill 125.5 gal (US) 475.0 l Less

Buckets

Bucket Capacities 5.4-6.3 m3 (7.0-8.3 yd3) 5.4-6.3 m3 (7.0-8.3 yd3) Less

Axles

Front Fixed Fixed Less
Rear Trunnion Trunnion Less
Oscillation Angle ±6° ±6° Less

Brakes

Brakes SAE J1473 OCT90, ISO 3450:1992 SAE J1473 OCT90, ISO 3450:1992 Less

Hydraulic System - Steering

Steering System - Circuit Pilot, load sensing Pilot, load sensing Less
Steering System - Pump Piston, variable displacement Piston, variable displacement Less
Relief Valve Setting - Steering 4351.0 psi 30000.0 kPa Less
Maximum Flow 71.3 gal/min 270.0 l/min Less
Steering Cycle Times - High Idle 3.4 s 3.4 s Less
Steering Cycle Times - Low Idle 5.6 s 5.6 s Less
Total Steering Angle 80.0 ° 80.0 ° Less

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

Dump 2.2 s 2.2 s Less
Lower Float Down 3.5 s 3.5 s Less
Rack Back 4.5 s 4.5 s Less
Raise 8.0 s 8.0 s Less
Total Hydraulic Cycle Time - Empty Bucket 18.2 s 18.2 s Less

Sound Performance - Standard

Machine Sound Level (ISO 6395) 111.0 dB(A) 111.0 dB(A) Less
Operator Sound Level - ISO 6396 71.0 dB(A) 71.0 dB(A) Less

Sound Performance - Suppression

Machine Sound Level (ISO 6395) 109.0 dB(A) 109.0 dB(A) Less
Operator Sound Level - ISO 6396 70.0 dB(A) 70.0 dB(A) Less

Efficiency

Efficiency

Efficiency

Efficiency

Efficiency

Structures

Structures

Structures

Power Train

Power Train

Power Train

Power Train

Hydraulics

Hydraulics

Hydraulics

Hydraulics

Operator Station

Operator Station

Operator Station

Operator Station

Operator Station

Technology Solutions

Technology Solutions

Technology Solutions

Technology Solutions

Technology Solutions

Serviceability

Customer Support

Safety

Safety

Safety

Safety

Steel Mill Features

Steel Mill Features

Steel Mill Features

Steel Mill Features

Buckets and Ground Engaging Tools

Buckets and Ground Engaging Tools

Buckets and Ground Engaging Tools

Buckets and Ground Engaging Tools

Buckets and Ground Engaging Tools

Operating Costs

Operating Costs

988K Steel Mill ArrangementStandard Equipment

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
  • Transmission lockout

OPERATOR ENVIRONMENT
  • 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, 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, Next Generation Modular (NGMR)
  • 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

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, 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

988K Steel Mill ArrangementOptional Equipment

POWER TRAIN
  • 50° C (-58° F) antifreeze
  • Engine oil change system, high speed, Wiggins
  • Engine block heater 120V or 240V
  • High ambient cooling - software
  • Payload Control System (PCS)

OPERATOR ENVIRONMENT
  • Cab precleaner
  • AM/FM/CD/MP3 radio
  • Satellite Sirius radio with bluetooth
  • LED warning strobe
  • CB radio ready
  • Window pull down visor

MISCELLANEOUS ATTACHMENTS
  • Front and rear roading fenders