New CAT Equipment

988K Millyard 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 988K Millyard Arrangement is designed to meet the demands of millyard applications. The features of the 988K Millyard work together to provide a durable and reliable machine to meet the needs of the modern millyard.

Get a Quote

    Learn more about the 988K Millyard Arrangement

    Watch

    Product Specs

    Engine

    Net Power 541 HP
    Engine Model Cat® C18
    Net Power - SAE J1349 541 HP
    Bore 5.7 in
    Stroke 7.2 in
    Displacement 1105 in³
    Torque Rise 58 %
    Rated Speed 1700/min
    Peak Power Speed - 1,500 rpm - Gross - ISO 14396 580 HP
    Peak Power Speed - 1,500 rpm - Net Power - SAE J1349 541 HP
    Emissions U.S. EPA Tier 4 Final/EU Stage IV Technology or Tier 2 Equivalent
    Peak Torque - 1,200 rpm 2104 lb/ft
    Gross - ISO 14396 580 HP
    Peak Power Speed 1500/min
    Peak Power Speed - 1,500 rpm - Gross - SAE J1995 588 HP

    Forks

    Fork End Area 69 ft²

    Operating Specifications

    Operating Weight 139920 lb
    Tipping Load - Straight 78115 lb
    Tipping Load - Articulated 37° 68005 lb

    Transmission

    Transmission Type Cat-Planetenlastschaltgetriebe
    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
    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

    Hydraulic System - Lift/Tilt

    Maximum Flow 13.7 gal/min
    Pilot System Variable displacement piston
    Maximum Flow at 1,400-1,860 rpm 153 gal/min
    Relief Valve Setting - Main 580 psi
    Cylinders, Double Acting - Tilt, Bore and Stroke 292 mm × 671 mm (11.5 in × 26.4 in)
    Cylinders, Double Acting - Lift, Bore and Stroke 235 mm × 976 mm (9.25 in × 38.4 in)
    Lift/Tilt System Variable displacement piston
    Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing
    Relief Valve Setting - Lift/Tilt 4641 psi

    Service Refill Capacities

    Fuel Tank 188 gal (US)
    Cooling System 31.7 gal (US)
    Crankcase 15.9 gal (US)
    Transmission 31.7 gal (US)
    Differential - Final Drives - Front 49.1 gal (US)
    Differential - Final Drives - Rear 49.1 gal (US)
    Hydraulic System - Tank Only 63.4 gal (US)
    Hydraulic System Factory Fill 125.5 gal (US)
    Diesel Exhaust Fluid Tank 8.7 gal (US)

    Dimensions - Millyard Linkage

    Fork Top Clamp Opening 12.3 ft
    Dump Angle at Maximum Lift 39.4 °
    Ground to Top of Hood 10.9 ft
    Front Axle Centerline to Fork Tip 15.6 ft
    Fork Height at Maximum Lift 15.3 ft
    Wheel Base 14.9 ft
    Ground to Lower Hitch Clearance 1.9 ft
    Rear Axle - Centerline to Bumper 10.5 ft
    Ground to Center of Front Axle 3.2 ft
    Maximum Overall Length 41 ft
    Ground to Top of ROPS 13.8 ft
    Fork Height with Level Arms 8.1 ft
    Ground to Bumper Clearance 3.1 ft
    Hinge Pin Height at Maximum Lift 16.1 ft
    Ground to Top of Exhaust Stacks 13.8 ft

    Axles

    Front Fixed
    Rear Trunnion
    Oscillation Angle 13°

    Brakes

    Brakes SAE J1473 OKT90, ISO 3450:1992

    Hydraulic System - Steering

    Steering System - Circuit Pilot, load sensing
    Steering System - Pump Piston, variable displacement
    Relief Valve Setting - Steering 4351 psi
    Steering Cycle Times - High Idle 3.4 s
    Steering Cycle Times - Low Idle 5.6 s
    Maximum Flow 71.3 gal/min
    Total Steering Angle 74 °

    Sound Performance - Standard

    Operator Sound Level (ISO 6396) 71 dB(A)
    Machine Sound Level (ISO 6395) 111 dB(A)

    Sound Performance - Suppression

    Machine Sound Level (ISO 6395) 109 dB(A)
    Operator Sound Level (ISO 6396) 70 dB(A)