988K Wheel Loader Steel Mill Arrangement
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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Engine
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- Net Power
- 541HP
- Engine Model
- Cat® C18 ™
- Net Power - SAE J1349
- 541HP
- Bore
- 5.7in
- Stroke
- 7.2in
- Displacement
- 1105in³
- Torque Rise
- 58%
- Rated Speed
- 1700/min
- Peak Power Speed - 1,500 rpm - Gross - ISO 14396
- 580HP
- Gross - ISO 14396
- 580HP
- Peak Power Speed
- 1500/min
- Peak Power Speed - 1,500 rpm - Gross - SAE J1995
- 588HP
- Peak Torque - 1,200 rpm
- 2104lb/ft
- Peak Power Speed - 1,500 rpm - Net Power - SAE J1349
- 541HP
- Emissions
- Einhaltung von EPA Tier 4 Final (USA)/Stufe V (EU), Tier-2-konform
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Operating Specifications
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- Operating Weight
- 112574lb
- Rated Payload
- 12.5t
- Rated Payload - Standard
- 12.5t
- Bucket Capacity Range
- 6.4-7.6 m3 (8.3-10 yd3)
- Cat Truck Match - Standard
- 770-772
- Cat Truck Match - High Lift
- 773-775
- Rated Payload - High Lift
- 12.5t
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Buckets
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- Bucket Capacities
- 5.4-6.3 m3 (7.0-8.3 yd3)
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Transmission
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- Transmission Type
- Cat-Planetenlastschaltgetriebe
- 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 1
- Lock-up disabled
- Direct Drive - Forward 2
- 7.8mile/h
- Direct Drive - Forward 3
- 13.9mile/h
- Direct Drive - Forward 4
- 24.4mile/h
- Direct Drive - Reverse 1
- 5mile/h
- Direct Drive - Reverse 2
- 8.9mile/h
- Direct Drive - Reverse 3
- 15.8mile/h
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Axles
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- Front
- Fixed
- Rear
- Trunnion
- Oscillation Angle
- ±6°
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Hydraulic System - Steering
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- Steering System - Circuit
- Pilot, load sensing
- Steering System - Pump
- Piston, variable displacement
- Relief Valve Setting - Steering
- 4351psi
- Maximum Flow
- 71.3gal/min
- Steering Cycle Times - Low Idle
- 5.6s
- Total Steering Angle
- 80°
- Steering Cycle Times - High Idle
- 3.4s
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Service Refill Capacities
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- Fuel Tank
- 181gal (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 (Tier 4)
- 8.7gal (US)
- Hydraulic System Factory Fill
- 125.5gal (US)
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Hydraulic System - Lift/Tilt
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- Pilot System
- Variable displacement piston
- Relief Valve Setting - Main
- 551psi
- Maximum Flow
- 13.7gal/min
- Cylinders, Double Acting - Tilt, Bore and Stroke
- 267 mm × 685 mm (10.5 in × 27.0 in)
- Maximum Flow at 1,400-1,860 rpm
- 153gal/min
- Cylinders, Double Acting - Lift, Bore and Stroke
- 210 mm × 1050 mm (8.3 in × 41.3 in)
- Lift/Tilt System
- Variable displacement piston
- Lift/Tilt System - Circuit
- EH- Positive Flow Control, Flow Sharing
- Relief Valve Setting - Lift/Tilt
- 4757psi
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Hydraulic Cycle Time (1,400-1,860 rpm)
-
- Rack Back
- 4.5s
- Lower Float Down
- 3.5s
- Raise
- 8s
- Total Hydraulic Cycle Time - Empty Bucket
- 18.2s
- Dump
- 2.2s
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Sound Performance - Standard
-
- Operator Sound Level (ISO 6396)
- 71dB(A)
- Machine Sound Level (ISO 6395)
- 111dB(A)
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Sound Performance - Suppression
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- Operator Sound Level (ISO 6396)
- 70dB(A)
- Machine Sound Level (ISO 6395)
- 109dB(A)
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Brakes
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- Brakes
- SAE J1473 OKT90, ISO 3450:1992
Standard Equipment:
-
Note
-
- 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
- Transmission lockout
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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, 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, 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
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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:
-
Note
-
- Standard and optional equipment may vary. Consult your Cat dealer for details.
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Power Train
-
- 50° C (-58° F) antifreeze
- Engine oil change system, high speed, Wiggins
- Engine block heater 120V or 240V
- High ambient cooling - software
- Payload Control System (PCS)
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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
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Miscellaneous Attachments
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- Front and rear roading fenders
