988K Wheel Loader
Cat® Large Wheel Loaders are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a lower cost per ton. 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.
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SPECIFICATION SUMMARY
- Net Power 541.0 hp
- Operating Weight 112574.0 lb
- Bucket Capacities 4.7-13 m3 (6.2-17 yd3)
- Engine Model Cat® C18 ACERT™
PRICE (USD)
Call 800-637-5000 for rate information
Engine
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Net Power541.0 hp
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Engine ModelCat® C18 ACERT™
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Net Power – SAE J1349541.0 hp
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Bore5.7 in
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Stroke7.2 in
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Displacement1105.0 in3
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Torque Rise58.0 %
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Rated Speed1,700 rpm
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EmissionsU.S. EPA Tier 4 Final/EU Stage IV OR Tier 3/Stage IIIA Equivalent OR Tier 2/Stage II Equivalent
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Gross - ISO 14396580 HP
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Peak Power Speed1500/min
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Peak Power Speed - 1,500 rpm - Gross - ISO 14396580 HP
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Peak Power Speed - 1,500 rpm - Gross - SAE J1995588 HP
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Peak Power Speed - 1,500 rpm - Net Power - SAE J1349541 HP
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Peak Torque - 1,200 rpm2104 lb/ft
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Net Power541 HP
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Engine ModelCat® C18 ™
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Bore5.7 in
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Stroke7.2 in
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Displacement1105 in³
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Torque Rise58 %
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Rated Speed1700/min
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EmissionsU.S. EPA Tier 4 Final/EU Stage IV OR Tier 3/Stage IIIA Equivalent OR Tier 2/Stage II Equivalent
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Net Power - SAE J1349541 HP
Operating Specifications
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Operating Weight112574.0 lb
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Rated Payload – Quarry Face12.5 tons
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Rated Payload – Loose Material16 tons
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Bucket Capacity Range4.7-13 m3 (6.2-17 yd3)
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Cat Truck Match - Standard770~772
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Cat Truck Match - High Lift773~775
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Operating Weight112574 lb
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Rated Payload - Loose Material16 t
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Rated Payload - Quarry Face12.5 t
Buckets
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Bucket Capacities4.7-13 m3 (6.2-17 yd3)
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Bucket Capacities4.7-13 m3 (6.2-17 yd3)
Transmission
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Transmission TypeCat planetary power shift
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Forward 14.0 mph
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Forward 27.2 mph
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Forward 312.7 mph
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Forward 421.6 mph
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Reverse 14.7 mph
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Reverse 28.3 mph
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Reverse 314.4 mph
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Direct Drive Forward 27.8 mph
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Direct Drive Reverse 15.0 mph
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Direct Drive Reverse 28.9 mph
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Direct Drive - Forward 1Lock-up disabled
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Direct Drive - Forward 313.9 mile/h
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Direct Drive - Forward 424.4 mile/h
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Direct Drive - Reverse 315.8 mile/h
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Transmission TypeCat-Planetenlastschaltgetriebe
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Forward - 14 mile/h
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Forward - 27.2 mile/h
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Forward - 312.7 mile/h
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Forward - 421.6 mile/h
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Reverse - 14.7 mile/h
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Reverse - 28.3 mile/h
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Reverse - 314.4 mile/h
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Direct Drive - Forward 27.8 mile/h
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Direct Drive - Reverse 15 mile/h
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Direct Drive - Reverse 28.9 mile/h
Axles
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FrontFixed
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RearTrunnion
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Oscillation Angle13°
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FrontFixed
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RearTrunnion
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Oscillation Angle13 °
Hydraulic System – Steering
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Steering System – CircuitPilot, load sensing
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Steering System – PumpPiston, variable displacement
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Maximum Flow71.3 gal/min
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Steering Cycle Time (high idle)3.4 sec
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Steering Cycle Time (low idle)5.6 sec
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Total Steering Angle86°
Service Refill Capacities
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Fuel Tank188.0 gal
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Cooling System31.7 gal
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Crankcase15.9 gal
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Transmission31.7 gal
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Differentials and Final Drives – Front49.1 gal
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Differentials and Final Drives – Rear49.1 gal
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Hydraulic System (tank only)63.4 gal
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Diesel Exhaust Fluid Tank (for Tier 4 Final/Stage IV only)8.7 gal
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Hydraulic System Factory Fill125.5 gal (US)
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Coolant (Validated by Test Cell Fill Quantities)33 gal (US)
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Transmission - Validated by Test Cell Fill Quantities29 gal (US)
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Fuel Tank188 gal (US)
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Cooling System31.7 gal (US)
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Crankcase15.9 gal (US)
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Transmission31.7 gal (US)
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Hydraulic System - Tank Only63.4 gal (US)
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Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only)8.7 gal (US)
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Differential - Final Drives - Front49.1 gal (US)
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Differential - Final Drives - Rear49.1 gal (US)
Sound Performance – Tier 4 Final/Stage IV: Standard
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Operator Sound Level (ISO 6396)72 dB(A)
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Machine Sound Level (ISO 6395)111 dB(A)
Hydraulic System – Lift/Tilt
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Cylinders, Double Acting: Lift, Bore and Stroke210 mm × 1050 mm (8.7 in × 41.3 in)
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Cylinders, Double Acting: Tilt, Bore and Stroke269 mm × 685 mm (8.7 in × 27 in)
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Maximum Flow at 1,400-1,860 rpm153.0 gal/min
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Pilot SystemVariable displacement piston
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Relief Valve Setting – Lift/Tilt4757 psi
Sound Performance – Tier 4 Final/Stage IV: Suppression
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Operator Sound Level (ISO 6396)72 dB(A)
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Machine Sound Level (ISO 6395)109 dB(A)
Brakes
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BrakesSAE J1473 OCT90, ISO 3450:1992
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BrakesSAE J1473 OKT90, ISO 3450:1992
Hydraulic System - Steering
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Relief Valve Setting - Steering4351 psi
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Maximum Flow71.3 gal/min
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Steering Cycle Times - High Idle3.4 s
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Steering Cycle Times - Low Idle5.6 s
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Steering System - CircuitPilot, load sensing
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Steering System - PumpPiston, variable displacement
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Total Steering Angle86 °
Hydraulic System - Lift/Tilt
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Lift/Tilt SystemVariable displacement piston
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Maximum Flow13.7 gal/min
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Relief Valve Setting - Main551 psi
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Cylinders, Double Acting - Lift, Bore and Stroke210 mm × 1050 mm (8.7 in × 41.3 in)
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Cylinders, Double Acting - Tilt, Bore and Stroke269 mm × 685 mm (8.7 in × 27 in)
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Lift/Tilt System - CircuitEH- Positive Flow Control, Flow Sharing
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Maximum Flow at 1,400-1,860 rpm153 gal/min
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Pilot SystemVariable displacement piston
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Relief Valve Setting - Lift/Tilt4757 psi
Hydraulic Cycle Time (1,400-1,860 rpm)
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Dump2.2 s
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Lower Float Down3.5 s
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Rack Back4.5 s
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Raise8 s
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Total Hydraulic Cycle Time - Empty Bucket18.2 s
Sound Performance – Tier 2 Equivalent/Stage II: Standard
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Operator Sound Level (ISO 6396)73 dB(A)
Sound Performance - Tier 2 Equivalent/Stage II: Standard
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Machine Sound Level (ISO 6395)112 dB(A)
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Operator Sound Level ( ISO 6396)73 dB(A)
Sound Performance - Tier 2 Equivalent/Stage II: Suppression
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Operator Sound Level (ISO 6396)72 dB(A)
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Machine Sound Level (ISO 6395)110 dB(A)
Sound Performance - Tier 4 Final/Stage IV - Standard
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Machine Sound Level (ISO 6395)111 dB(A)
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Operator Sound Level (ISO 6396)72 dB(A)
Sound Performance - Tier 4 Final/Stage IV: Suppression
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Machine Sound Level (ISO 6395)109 dB(A)
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Operator Sound Level (ISO 6396)72 dB(A)
POWERFUL EFFICIENCY
LONG TERM VALUE AND DURABILITY
PROVEN RELIABILITY
PERFORMANCE AND PRODUCTIVITY
OPERATOR COMFORT AND CONTROL
PRODUCTIVITY WITH TECHNOLOGY
SAVE ON SERVICE AND MAINTENANCE
TOP-TIER SERVICE AND SUPPORT
SAFETY FIRST
REDUCE ENVIRONMENTAL IMPACT
EFFICIENT EQUIPMENT MATCH
ATTACHMENTS TO MEET YOUR NEEDS
PERFORMANCE WITH LESS FUEL
Standard Equipment:
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- Note
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- Standard and optional equipment may vary. Consult your Cat dealer for details.
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- Electrical
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- 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
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- Operator Environment
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- 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 minder
- 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
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- Power Train
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- 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, Aluminum Modular Radiator (AMR)
- 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
- Manual switch and automatic fuel priming
- Cat Production Measurement ready
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- Other
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- 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:
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- Note
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- Standard and optional equipment may vary. Consult your Cat dealer for details.
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- Power Train
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- –50° C (–58° F) antifreeze
- Engine oil change system, high speed, Wiggins
- Engine block heater 120V or 240V
- High ambient cooling – software
- Cat Production Measurement
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- Operator Environment
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- Cab precleaner
- AM/FM/CD/MP3 radio
- Satellite Sirius radio with bluetooth
- LED warning strobe
- CB radio ready
- Window pull down visor
- Handrail mounted mirrors
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- Miscellaneous Attachments
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- Front and rear roading fenders
- Fast fill fuel system (Shaw-Aero)
- Cold Weather Starting (extra starter plus two batteries)
- Aggregate Handler