New CAT Equipment

988K Wheel Loader Steel Mill Arrangement

Built to withstand the harshest conditions

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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    Learn more about the 988K Wheel Loader Steel Mill Arrangement

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    • Axles
      Front
      Fixed
      Oscillation Angle
      ±6°
      Rear
      Trunnion
    • Brakes
      Brakes
      SAE J1473 OKT90, ISO 3450:1992
    • Buckets
      Bucket Capacities
      5.4-6.3 m3 (7.0-8.3 yd3)
    • Engine
      Bore
      5.7 in
      Displacement
      1105 in³
      Emissions
      Einhaltung von EPA Tier 4 Final (USA)/Stufe V (EU), Tier-2-konform
      Engine Model
      Cat® C18 ™
      Gross - ISO 14396
      580 HP
      Net Power
      541 HP
      Net Power - SAE J1349
      541 HP
      Peak Power Speed
      1500/min
      Peak Power Speed - 1,500 rpm - Gross - ISO 14396
      580 HP
      Peak Power Speed - 1,500 rpm - Gross - SAE J1995
      588 HP
      Peak Power Speed - 1,500 rpm - Net Power - SAE J1349
      541 HP
      Peak Torque - 1,200 rpm
      2104 lb/ft
      Rated Speed
      1700/min
      Stroke
      7.2 in
      Torque Rise
      58 %
    • Hydraulic Cycle Time (1,400-1,860 rpm)
      Dump
      2.2 s
      Lower Float Down
      3.5 s
      Rack Back
      4.5 s
      Raise
      8 s
      Total Hydraulic Cycle Time - Empty Bucket
      18.2 s
    • Hydraulic System - Lift/Tilt
      Cylinders, Double Acting - Lift, Bore and Stroke
      210 mm × 1050 mm (8.3 in × 41.3 in)
      Cylinders, Double Acting - Tilt, Bore and Stroke
      267 mm × 685 mm (10.5 in × 27.0 in)
      Lift/Tilt System
      Variable displacement piston
      Lift/Tilt System - Circuit
      EH- Positive Flow Control, Flow Sharing
      Maximum Flow
      13.7 gal/min
      Maximum Flow at 1,400-1,860 rpm
      153 gal/min
      Pilot System
      Variable displacement piston
      Relief Valve Setting - Lift/Tilt
      4757 psi
      Relief Valve Setting - Main
      551 psi
    • Hydraulic System - Steering
      Maximum Flow
      71.3 gal/min
      Relief Valve Setting - Steering
      4351 psi
      Steering Cycle Times - High Idle
      3.4 s
      Steering Cycle Times - Low Idle
      5.6 s
      Steering System - Circuit
      Pilot, load sensing
      Steering System - Pump
      Piston, variable displacement
      Total Steering Angle
      80 °
    • Operating Specifications
      Bucket Capacity Range
      6.4-7.6 m3 (8.3-10 yd3)
      Cat Truck Match - High Lift
      773-775
      Cat Truck Match - Standard
      770-772
      Operating Weight
      112574 lb
      Rated Payload
      12.5 t
      Rated Payload - High Lift
      12.5 t
      Rated Payload - Standard
      12.5 t
    • Service Refill Capacities
      Cooling System
      31.7 gal (US)
      Crankcase
      15.9 gal (US)
      Diesel Exhaust Fluid Tank (Tier 4)
      8.7 gal (US)
      Differential - Final Drives - Front
      49.1 gal (US)
      Differential - Final Drives - Rear
      49.1 gal (US)
      Fuel Tank
      181 gal (US)
      Hydraulic System - Tank Only
      63.4 gal (US)
      Hydraulic System Factory Fill
      125.5 gal (US)
      Transmission
      31.7 gal (US)
    • Sound Performance - Standard
      Machine Sound Level (ISO 6395)
      111 dB(A)
      Operator Sound Level (ISO 6396)
      71 dB(A)
    • Sound Performance - Suppression
      Machine Sound Level (ISO 6395)
      109 dB(A)
      Operator Sound Level (ISO 6396)
      70 dB(A)
    • Transmission
      Direct Drive - Forward 1
      Lock-up disabled
      Direct Drive - Forward 2
      7.8 mile/h
      Direct Drive - Forward 3
      13.9 mile/h
      Direct Drive - Forward 4
      24.4 mile/h
      Direct Drive - Reverse 1
      5 mile/h
      Direct Drive - Reverse 2
      8.9 mile/h
      Direct Drive - Reverse 3
      15.8 mile/h
      Forward - 1
      4 mile/h
      Forward - 2
      7.2 mile/h
      Forward - 3
      12.7 mile/h
      Forward - 4
      21.6 mile/h
      Reverse - 1
      4.7 mile/h
      Reverse - 2
      8.3 mile/h
      Reverse - 3
      14.4 mile/h
      Transmission Type
      Cat-Planetenlastschaltgetriebe
    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
    • 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
    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
    • 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

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