988K Block Handler Arrangement

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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 541.0 hp 403.0 kW Less
Engine Model Cat® C18 ACERT™ Cat® C18 ACERT™ Less
Net Power - SAE J1349 541.0 hp 403.0 kW 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
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 hp 432.0 kW Less
Peak Power Speed 1500.0 RPM 1500.0 RPM Less
Peak Power Speed: Gross - ISO 14396 580.0 hp 432.0 kW Less
Peak Power Speed: Gross - SAE J1995 588.0 hp 439.0 kW Less
Peak Power Speed: Net Power - SAE J1349 541.0 hp 403.0 kW Less
Peak Torque @ 1,200 rpm 2104.0 lb ft 2852.0 N·m Less
Rated Speed 1700.0 RPM 1700.0 RPM Less

Operating Specifications

Operating Weight 135602.0 lb 61508.0 kg Less


Transmission Type Cat planetary power shift Cat planetary power shift Less
Forward 1 3.6 mph 5.8 km/h Less
Forward 2 4.5 mph 10.3 km/h Less
Forward 3 11.4 mph 18.3 km/h Less
Forward 4 19.0 mph 30.5 km/h Less
Reverse 1 4.1 mph 6.6 km/h Less
Reverse 2 7.3 mph 11.8 km/h Less
Reverse 3 13.0 mph 20.8 km/h Less
Direct Drive Forward 1 Lock-up disabled Lock-up disabled Less
Direct Drive Forward 2 6.7 mph 10.8 km/h Less
Direct Drive Forward 3 11.9 mph 19.2 km/h Less
Direct Drive Forward 4 21.0 mph 34.0 km/h Less
Direct Drive Reverse 1 4.3 mph 6.9 km/h Less
Direct Drive Reverse 2 7.7 mph 12.4 km/h Less
Direct Drive Reverse 3 13.7 mph 22.0 km/h Less

Hydraulic System - Lift/Tilt

Cylinders, Double Acting: Lift, Bore and Stroke 235 mm × 976 mm (9.3 in × 38.4 in) 235 mm × 976 mm (9.3 in × 38.4 in) Less
Cylinders, Double Acting: Tilt, Bore and Stroke 291 mm × 671 mm (11.5 in × 26.4 in) 291 mm × 671 mm (11.5 in × 26.4 in) Less
Lift/Tilt System Variable displacement piston Variable displacement piston Less
Lift/Tilt System - Circuit Pilot operated - EH control, flow sharing Pilot operated - EH control, flow sharing Less
Maximum Flow @ 1,700 rpm 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
Relief Valve Setting - Lift/Tilt 4757.0 psi 32800.0 kPa Less

Hydraulic Cycle Time

Dump 2.2 Seconds 2.2 Seconds Less
Lower Float Down 3.5 Seconds 3.5 Seconds Less
Rack back 4.5 Seconds 4.5 Seconds Less
Raise 8.0 Seconds 8.0 Seconds Less
Total Hydraulic Cycle Time (empty bucket) 18.2 Seconds 18.2 Seconds Less

Hydraulic System - Steering

Maximum Flow 74.0 gal/min 280.0 L/min Less
Relief Valve Setting - Steering 4641.0 psi 32000.0 kPa Less
Steering Cycle Time (high idle) 3.4 Seconds 3.4 Seconds Less
Steering Cycle Time (low idle) 5.6 Seconds 5.6 Seconds Less
Steering System - Circuit Pilot, load sensing Pilot, load sensing Less
Steering System - Pump Piston, variable displacement Piston, variable displacement Less
Total Steering Angle 86.0 Degrees 86.0 Degrees Less

Service Refill Capacities

Cooling System 31.7 gal 120.0 L Less
Crankcase 15.9 gal 60.0 L Less
Diesel Exhaust Fluid Tank 8.7 gal 33.0 L Less
Differentials and Final Drives - Front 49.1 gal 186.0 L Less
Differentials and Final Drives - Rear 49.1 gal 186.0 L Less
Fuel Tank 188.1 gal 712.0 L Less
Hydraulic System (factory fill) 125.5 gal 475.0 L Less
Hydraulic System (tank only) 63.4 gal 240.0 L Less
Transmission 31.7 gal 120.0 L Less


Front Fixed Fixed Less
Rear Trunnion Trunnion Less
Oscillation Angle 13.0 Degrees 13.0 Degrees Less


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

Sound Performance - Standard

Exterior Sound Level 111.0 dB(A) 111.0 dB(A) Less
Interior Sound Level 71.0 dB(A) 71.0 dB(A) Less

Sound Performance - Suppression

Exterior Sound Level 109.0 dB(A) 109.0 dB(A) Less
Interior Sound Level 70.0 dB(A) 70.0 dB(A) Less


Delivering fuel efficiency you demand through integrated machine systems.

Designed for Block Handling

Unique features for block handling applications.

Power Train

Move material more efficiently with improved power and control.


Productivity enabling you to move more and make more.

Operator Station

Best-in-class operator comfort and ergonomics.

Technology Solutions

Greater productivity through Integrated Electronic Systems.


Enabling high uptime by reducing your service time.

Customer Support

Your Cat dealers know how to keep your machines productive.


Making your safety our priority.


Work tool options to meet your needs.

988K Block Handler Arrangement Standard Equipment

  • 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

  • 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

  • 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

  • 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 Block Handler Arrangement Optional Equipment

  • -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)

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

  • Front and rear roading fenders
  • Fast fill fuel system (Shaw-Aero)