988K Millyard Arrangement

Heavy Equipment

988K Millyard Arrangement

Net Power
541 HP / 403 kW
Operating Weight
139920 lb / 63600 kg
Net Power - SAE J1349
541 HP / 403 kW

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.

Engine
Net Power 541 HP / 403 kW
Engine Model Cat® C18 ACERT™
Net Power - SAE J1349 541 HP / 403 kW
Bore 5.7 in / 145 mm
Stroke 7.2 in / 183 mm
Displacement 1105 in³ / 18.1 l
Torque Rise 58 %
Rated Speed 1,700 rpm
Emissions U.S. EPA Tier 4 Final/EU Stage IV Technology or Tier 2 Equivalent
Gross - ISO 14396 580 HP / 432 kW
Peak Power Speed 1,500 rpm
Peak Power Speed - 1,500 rpm - Gross - ISO 14396 580 HP / 432 kW
Peak Power Speed - 1,500 rpm - Gross - SAE J1995 588 HP / 439 kW
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349 541 HP / 403 kW
Peak Torque - 1,200 rpm 2104 lb/ft / 2852 N·m
Forks
Fork End Area 69 ft² / 6.4 m²
Operating Specifications
Operating Weight 139920 lb / 63600 kg
Tipping Load - Articulated 37° 68005 lb / 30910 kg
Tipping Load - Straight 78115 lb / 35500 kg
Transmission
Transmission Type Cat planetary power shift
Forward - 1 4 mile/h / 6.5 km/h
Forward - 2 7.2 mile/h / 11.6 km/h
Forward - 3 12.7 mile/h / 20.4 km/h
Forward - 4 21.6 mile/h / 34.7 km/h
Reverse - 1 4.7 mile/h / 7.5 km/h
Reverse - 2 8.3 mile/h / 13.3 km/h
Reverse - 3 14.4 mile/h / 23.2 km/h
Direct Drive - Forward 1 Lock-up disabled
Direct Drive - Forward 2 7.8 mile/h / 12.5 km/h
Direct Drive - Forward 3 13.9 mile/h / 22.3 km/h
Direct Drive - Forward 4 24.4 mile/h / 39.3 km/h
Direct Drive - Reverse 1 5 mile/h / 8 km/h
Direct Drive - Reverse 2 8.9 mile/h / 14.3 km/h
Direct Drive - Reverse 3 15.8 mile/h / 25.5 km/h
Hydraulic System - Lift/Tilt
Cylinders, Double Acting - Lift, Bore and Stroke 235 mm × 976 mm (9.25 in × 38.4 in)
Cylinders, Double Acting - Tilt, Bore and Stroke 292 mm × 671 mm (11.5 in × 26.4 in)
Lift/Tilt System Variable displacement piston
Maximum Flow 13.7 gal/min / 52 l/min
Maximum Flow at 1,400-1,860 rpm 153 gal/min / 580 l/min
Pilot System Variable displacement piston
Relief Valve Setting 580 psi / 4000 kPa
Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing
Relief Valve Setting - Lift/Tilt 4641 psi / 32000 kPa
Service Refill Capacities
Fuel Tank 188 gal (US) / 712 l
Cooling System 31.7 gal (US) / 120 l
Crankcase 15.9 gal (US) / 60 l
Transmission 31.7 gal (US) / 120 l
Differential - Final Drives - Front 49.1 gal (US) / 186 l
Differential - Final Drives - Rear 49.1 gal (US) / 186 l
Hydraulic System - Tank Only 63.4 gal (US) / 240 l
Diesel Exhaust Fluid Tank 8.7 gal (US) / 33 l
Hydraulic System Factory Fill 125.5 gal (US) / 475 l
Dimensions - Millyard Linkage
Dump Angle at Maximum Lift 39.4 °
Fork Height at Maximum Lift 15.3 ft / 4660 mm
Fork Height with Level Arms 8.1 ft / 2468 mm
Fork Top Clamp Opening 12.3 ft / 3741 mm
Front Axle Centerline to Fork Tip 15.6 ft / 4765 mm
Ground to Bumper Clearance 3.1 ft / 933 mm
Ground to Center of Front Axle 3.2 ft / 978 mm
Ground to Lower Hitch Clearance 1.9 ft / 568 mm
Ground to Top of Exhaust Stacks 13.8 ft / 4214 mm
Ground to Top of Hood 10.9 ft / 3334 mm
Ground to Top of ROPS 13.8 ft / 4221 mm
Hinge Pin Height at Maximum Lift 16.1 ft / 4918 mm
Maximum Overall Length 41 ft / 12502 mm
Rear Axle - Centerline to Bumper 10.5 ft / 3187 mm
Wheel Base 14.9 ft / 4550 mm
Axles
Front Fixed
Rear Trunnion
Oscillation Angle 13°
Brakes
Brakes SAE J1473 OCT90, ISO 3450:1992
Hydraulic System - Steering
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Relief Valve Setting - Steering 4351 psi / 30000 kPa
Maximum Flow 71.3 gal/min / 270 l/min
Steering Cycle Times - High Idle 3.4 s
Steering Cycle Times - Low Idle 5.6 s
Total Steering Angle 74 °
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)

Standard 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 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
    • Swing out radiator system with 6 fpi radiator cores
    • Auto-reversing fan with adjustable controls and manual cycle
    • Hinged, perforated side doors
    • 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

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