New | 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.

Engine
Net Power	541 HP
Engine Model	Cat® C18 ACERT™
Net Power - SAE J1349	541 HP
Bore	5.7 in
Stroke	7.2 in
Displacement	1105 in³
Torque Rise	58 %
Rated Speed	1,700 rpm
Emissions	U.S. EPA Tier 4 Final/EU Stage IV, Tier 2 Equivalent
Gross - ISO 14396	580 HP
Peak Power Speed	1,500 rpm
Peak Power Speed - 1,500 rpm - Gross - ISO 14396	580 HP
Peak Power Speed - 1,500 rpm - Gross - SAE J1995	588 HP
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349	541 HP
Peak Torque - 1,200 rpm	2104 lb/ft
Operating Specifications
Operating Weight	112574 lb
Rated Payload	12.5 t
Rated Payload - Standard	12.5 t
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	12.5 t
Transmission
Transmission Type	Cat planetary power shift
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
Cylinders, Double Acting - Lift, Bore and Stroke	210 mm × 1050 mm (8.3 in × 41.3 in)
Cylinders, Double Acting - Tilt, Bore and Stroke	267 mm × 685 mm (10.5 in × 27.0 in)
Lift/Tilt System	Variable displacement piston
Maximum Flow	13.7 gal/min
Maximum Flow at 1,400-1,860 rpm	153 gal/min
Pilot System	Variable displacement piston
Relief Valve Setting	551 psi
Lift/Tilt System - Circuit	EH- Positive Flow Control, Flow Sharing
Relief Valve Setting - Lift/Tilt	4757 psi
Service Refill Capacities
Fuel Tank	181 gal (US)
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)
Diesel Exhaust Fluid Tank (Tier 4)	8.7 gal (US)
Hydraulic System Factory Fill	125.5 gal (US)
Buckets
Bucket Capacities	5.4-6.3 m3 (7.0-8.3 yd3)
Axles
Front	Fixed
Rear	Trunnion
Oscillation Angle	±6°
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
Maximum Flow	71.3 gal/min
Steering Cycle Times - High Idle	3.4 s
Steering Cycle Times - Low Idle	5.6 s
Total Steering Angle	80 °
Hydraulic Cycle Time (1,400-1,860 rpm)
Dump	2.2 s
Lower Float Down	3.5 s
Rack Back	4.5 s
Raise	8 s
Total Hydraulic Cycle Time - Empty Bucket	18.2 s
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)

Efficiency

Structures

Power Train

Hydraulics

Operator Station

Technology Solutions

Serviceability

Customer Support

Safety

Steel Mill Features

Buckets And Ground Engaging Tools

Operating Costs

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
Transmission lockout

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

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
Payload Control System (PCS)

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

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