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.

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Net Power
541.0 hp
Operating Weight
139920.0 lb
Engine Model
Cat® C18 ACERT™
Net Power - SAE J1349
541.0 hp

Product Specs

Engine

Net Power
541.0hp
Engine Model
Cat® C18 ACERT™
Net Power - SAE J1349
541.0hp
Bore
5.7in
Stroke
7.2in
Displacement
1105.0in3
Torque Rise
58.0%
Rated Speed
1,700 rpm
Emissions
U.S. EPA Tier 4 Final/EU Stage IV Technology or Tier 2 Equivalent
Gross - ISO 14396
580mm H2O
Peak Power Speed
1,500 rpm
Peak Power Speed - 1,500 rpm - Gross - ISO 14396
580mm H2O
Peak Power Speed - 1,500 rpm - Gross - SAE J1995
588mm H2O
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349
541mm H2O
Peak Torque - 1,200 rpm
2104lb/ft
Net Power
541mm H2O
Engine Model
Cat® C18 ACERT™
Net Power - SAE J1349
541mm H2O
Bore
5.7in
Stroke
7.2in
Displacement
1105in³
Torque Rise
58%
Rated Speed
1,700 rpm
Emissions
U.S. EPA Tier 4 Final/EU Stage IV Technology or Tier 2 Equivalent

Operating Specifications

Operating Weight
139920.0lb
Tipping Load - Articulated 37°
68005.0lb
Tipping Load - Straight
78115.0lb
Operating Weight
139920lb
Tipping Load - Articulated 37°
68005lb
Tipping Load - Straight
78115lb

Transmission

Transmission Type
Cat planetary power shift
Forward 1
4.0mph
Forward 2
7.2mph
Forward 3
12.7mph
Forward 4
21.6mph
Reverse 1
4.7mph
Reverse 2
8.3mph
Reverse 3
14.4mph
Direct Drive - Forward 2
7.8mph
Direct Drive - Reverse 1
5.0mph
Direct Drive - Reverse 2
8.9mph
Direct Drive - Forward 1
Lock-up disabled
Direct Drive - Forward 3
13.9mile/h
Direct Drive - Forward 4
24.4mile/h
Direct Drive - Reverse 3
15.8mile/h
Transmission Type
Cat planetary power shift
Forward - 1
4mile/h
Forward - 2
7.2mile/h
Forward - 3
12.7mile/h
Forward - 4
21.6mile/h
Reverse - 1
4.7mile/h
Reverse - 2
8.3mile/h
Reverse - 3
14.4mile/h
Direct Drive - Forward 2
7.8mile/h
Direct Drive - Reverse 1
5mile/h
Direct Drive - Reverse 2
8.9mile/h

Axles

Front
Fixed
Rear
Trunnion
Oscillation Angle
13°
Front
Fixed
Rear
Trunnion
Oscillation Angle
13°

Hydraulic System - Steering

Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Maximum Flow
71.3gal/min
Steering Cycle Time (high idle)
3.4Seconds
Steering Cycle Time (low idle)
5.6Seconds
Total Steering Angle
74.0Degrees
Relief Valve Setting - Steering
4351psi
Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Maximum Flow
71.3gal/min
Steering Cycle Times - High Idle
3.4s
Steering Cycle Times - Low Idle
5.6s
Total Steering Angle
74°

Service Refill Capacities

Fuel Tank
188.0gal
Cooling System
31.7gal
Crankcase
15.9gal
Transmission
31.7gal
Differentials and Final Drives - Front
49.1gal
Differentials and Final Drives - Rear
49.1gal
Hydraulic System (tank only)
63.4gal
Diesel Exhaust Fluid Tank
8.7gal
Hydraulic System Factory Fill
125.5gal (US)
Fuel Tank
188gal (US)
Cooling System
31.7gal (US)
Crankcase
15.9gal (US)
Transmission
31.7gal (US)
Differential - Final Drives - Front
49.1gal (US)
Differential - Final Drives - Rear
49.1gal (US)
Hydraulic System - Tank Only
63.4gal (US)
Diesel Exhaust Fluid Tank
8.7gal (US)

Forks

Fork End Area
69.0ft2
Fork End Area
69ft²

Sound Performance - Standard

Machine Sound Level (ISO 6395)
111.0dB(A)
Operator Sound Level (ISO 6396)
71.0dB(A)
Machine Sound Level (ISO 6395)
111dB(A)
Operator Sound Level (ISO 6396)
71dB(A)

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)
Maximum Flow at 1,400-1,860 rpm
153.0gal/min
Pilot System
Variable displacement piston
Relief Valve Setting - Lift/Tilt
4641.0psi
Lift/Tilt System
Variable displacement piston
Maximum Flow
13.7gal/min
Relief Valve Setting
580psi
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)
Maximum Flow at 1,400-1,860 rpm
153gal/min
Pilot System
Variable displacement piston
Lift/Tilt System - Circuit
EH- Positive Flow Control, Flow Sharing
Relief Valve Setting - Lift/Tilt
4641psi

Sound Performance - Suppression

Machine Sound Level (ISO 6395)
109.0dB(A)
Operator Sound Level (ISO 6396)
70.0dB(A)
Machine Sound Level (ISO 6395)
109dB(A)
Operator Sound Level (ISO 6396)
70dB(A)

Brakes

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

Dimensions - Millyard Linkage

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

Standard/Optional Features

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)