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.
Caterpillar
988K Millyard Arrangement
Overview
Photos
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988K Millyard Arrangement -
988K Wheel Loader - Millyard Arrangement -
988K Wheel Loader - Millyard Arrangement -
988K Wheel Loader - Millyard Arrangement -
988K Wheel Loader - Millyard Arrangement
Videos
360° View
Exterior
360° Exterior view. Double click on the image to zoom in on any area of the product.
Interior
360° interior view. Double click on the image to zoom in on any area of the product.
Documents
Specifications
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Engine
Spec Value 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 V 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
Spec Value Fork End Area 69 ft² -
Operating Specifications
Spec Value Operating Weight 139920 lb Tipping Load - Straight 78115 lb Tipping Load - Articulated 37° 68005 lb -
Transmission
Spec Value 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
Spec Value 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
Spec Value 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
Spec Value 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
Spec Value Front Fixed Rear Trunnion Oscillation Angle 13° -
Brakes
Spec Value Brakes SAE J1473 OKT90, ISO 3450:1992 -
Hydraulic System - Steering
Spec Value 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
Spec Value Operator Sound Level (ISO 6396) 71 dB(A) Machine Sound Level (ISO 6395) 111 dB(A) -
Sound Performance - Suppression
Spec Value Machine Sound Level (ISO 6395) 109 dB(A) Operator Sound Level (ISO 6396) 70 dB(A)
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
- 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
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
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)
988K