988K Block Handler Arrangement

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. The Cat 988K Block Handler was designed to withstand the demanding and harsh environment of block handling applications. The features of the 988K Block Handler work together to provide a durable and reliable machine to meet your block handling needs.


Net Power 541HP
Engine Model C18 Cat®
Net Power - SAE J1349 541HP
Bore 5.7in
Stroke 7.2in
Displacement 1105in³
Torque Rise 58%
Peak Power Speed - Gross - SAE J1995 588HP
Peak Power Speed 1500r/min
Peak Power Speed - Gross - ISO 14396 580HP
Peak Torque - 1,200 rpm 2104lb/ft
Peak Power Speed - Net Power - SAE J1349 541HP
Rated Speed 1700r/min
Gross - ISO 14396 580HP
Emissions Einhaltung von EPA Tier 4 Final (USA)/Stufe V (EU), Tier-2-konform

Operating Specifications

Operating Weight 135602lb


Transmission Type Cat-Planetenlastschaltgetriebe
Forward - 1 3.6mile/h
Forward - 2 4.5mile/h
Forward - 3 11.4mile/h
Forward - 4 19mile/h
Reverse - 1 4.1mile/h
Reverse - 2 7.3mile/h
Reverse - 3 13mile/h
Direct Drive - Forward 4 21mile/h
Direct Drive - Reverse 2 7.7mile/h
Direct Drive - Reverse 1 4.3mile/h
Direct Drive - Forward 2 6.7mile/h
Direct Drive - Forward 3 11.9mile/h
Direct Drive - Forward 1 Lock-up disabled
Direct Drive - Reverse 3 13.7mile/h


Front Fixed
Rear Trunnion
Oscillation Angle 13°

Hydraulic System - Lift/Tilt

Maximum Flow at 1,400-1,860 rpm 153gal/min
Cylinders, Double Acting - Lift, Bore and Stroke 235 mm × 976 mm (9.3 in × 38.4 in)
Cylinders, Double Acting - Tilt, Bore and Stroke 291 mm × 671 mm (11.5 in × 26.4 in)
Relief Valve Setting - Main 551psi
Maximum Flow at 1,700 rpm 13.7gal/min
Pilot System Variable displacement piston
Relief Valve Setting - Lift/Tilt 4757psi
Lift/Tilt System Variable displacement piston
Lift/Tilt System - Circuit Pilot operated - EH control, flow sharing

Hydraulic Cycle Times

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

Hydraulic System - Steering

Maximum Flow 74gal/min
Steering Cycle Times - High Idle 3.4s
Total Steering Angle 86°
Steering System - Circuit Pilot, load sensing
Steering Cycle Times - Low Idle 5.6s
Relief Valve Setting - Steering 4641psi
Steering System - Pump Piston, variable displacement

Service Refill Capacities

Cooling System 31.7gal (US)
Transmission 31.7gal (US)
Differential - Final Drives - Rear 49.1gal (US)
Fuel Tank 188.1gal (US)
Crankcase 15.9gal (US)
Diesel Exhaust Fluid Tank 8.7gal (US)
Differential - Final Drives - Front 49.1gal (US)
Hydraulic System Factory Fill 125.5gal (US)
Hydraulic System - Tank Only 63.4gal (US)

Sound Performance - Standard

Interior Sound Level 71dB(A)
Exterior Sound Level 111dB(A)

Sound Performance - Suppression

Interior Sound Level 70dB(A)
Exterior Sound Level 109dB(A)


Brakes SAE J1473 OKT90, ISO 3450:1992

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
    • Starter emergency 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 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

Optional Equipment

  • 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
    • Fast fill fuel system (Shaw-Aero)