988K Wheel Loader

  • Exterior View
  • Interior View

Engine

Net Power
541 hp
Engine Model
Cat® C18 ACERT™
Net Power – SAE J1349
541 hp
Bore
6 in
Stroke
7 in
Displacement
1,105 in3
Torque Rise
58 %
Rated Speed
1,700 rpm
Emissions
U.S. EPA Tier 4 Final/EU Stage IV OR Tier 3/Stage IIIA Equivalent OR Tier 2/Stage II Equivalent
Gross - ISO 14396
580 HP
Peak Power Speed
1500/min
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
2,104 lb/ft
Net Power
541 HP
Engine Model
Cat® C18 ™
Bore
6 in
Stroke
7 in
Displacement
1,105 in³
Torque Rise
58 %
Rated Speed
1700/min
Emissions
U.S. EPA Tier 4 Final/EU Stage V OR Tier 3/Stage IIIA Equivalent OR Tier 2/Stage II Equivalent
Net Power - SAE J1349
541 HP

Operating Specifications

Operating Weight
112,574 lb
Rated Payload – Quarry Face
13 tons
Rated Payload – Loose Material
16 tons
Bucket Capacity Range
4.7-13 m3 (6.2-17 yd3)
Cat Truck Match - Standard
770~772
Cat Truck Match - High Lift
773~775
Operating Weight
112,574 lb
Rated Payload - Loose Material
16 t
Rated Payload - Quarry Face
13 t

Buckets

Bucket Capacities
4.7-13 m3 (6.2-17 yd3)
Bucket Capacities
4.7-13 m3 (6.2-17 yd3)

Transmission

Transmission Type
Cat planetary power shift
Forward 1
4 mph
Forward 2
7 mph
Forward 3
13 mph
Forward 4
22 mph
Reverse 1
5 mph
Reverse 2
8 mph
Reverse 3
14 mph
Direct Drive Forward 2
8 mph
Direct Drive Reverse 1
5 mph
Direct Drive Reverse 2
9 mph
Direct Drive - Forward 1
Lock-up disabled
Direct Drive - Forward 3
14 mile/h
Direct Drive - Forward 4
24 mile/h
Direct Drive - Reverse 3
16 mile/h
Transmission Type
Cat-Planetenlastschaltgetriebe
Forward - 1
4 mile/h
Forward - 2
7 mile/h
Forward - 3
13 mile/h
Forward - 4
22 mile/h
Reverse - 1
5 mile/h
Reverse - 2
8 mile/h
Reverse - 3
14 mile/h
Direct Drive - Forward 2
8 mile/h
Direct Drive - Reverse 1
5 mile/h
Direct Drive - Reverse 2
9 mile/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 gal/min
Steering Cycle Time (high idle)
3 sec
Steering Cycle Time (low idle)
6 sec
Total Steering Angle
86°

Service Refill Capacities

Fuel Tank
188 gal
Cooling System
32 gal
Crankcase
16 gal
Transmission
32 gal
Differentials and Final Drives – Front
49 gal
Differentials and Final Drives – Rear
49 gal
Hydraulic System (tank only)
63 gal
Diesel Exhaust Fluid Tank (for Tier 4 Final/Stage IV only)
9 gal
Hydraulic System Factory Fill
126 gal (US)
Coolant (Validated by Test Cell Fill Quantities)
33 gal (US)
Transmission - Validated by Test Cell Fill Quantities
29 gal (US)
Fuel Tank
188 gal (US)
Cooling System
32 gal (US)
Crankcase
16 gal (US)
Transmission
32 gal (US)
Hydraulic System - Tank Only
63 gal (US)
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only)
9 gal (US)
Differential - Final Drives - Front
49 gal (US)
Differential - Final Drives - Rear
49 gal (US)

Sound Performance – Tier 4 Final/Stage IV: Standard

Operator Sound Level (ISO 6396)
72 dB(A)
Machine Sound Level (ISO 6395)
111 dB(A)

Hydraulic System – Lift/Tilt

Cylinders, Double Acting: Lift, Bore and Stroke
210 mm × 1050 mm (8.7 in × 41.3 in)
Cylinders, Double Acting: Tilt, Bore and Stroke
269 mm × 685 mm (8.7 in × 27 in)
Maximum Flow at 1,400-1,860 rpm
153 gal/min
Pilot System
Variable displacement piston
Relief Valve Setting – Lift/Tilt
4,757 psi

Sound Performance – Tier 4 Final/Stage IV: Suppression

Operator Sound Level (ISO 6396)
72 dB(A)
Machine Sound Level (ISO 6395)
109 dB(A)

Brakes

Brakes
SAE J1473 OCT90, ISO 3450:1992
Brakes
SAE J1473 OKT90, ISO 3450:1992

Hydraulic System - Steering

Relief Valve Setting - Steering
4,351 psi
Maximum Flow
71 gal/min
Steering Cycle Times - High Idle
3 s
Steering Cycle Times - Low Idle
6 s
Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Total Steering Angle
86 °

Hydraulic System - Lift/Tilt

Lift/Tilt System
Variable displacement piston
Maximum Flow
14 gal/min
Relief Valve Setting - Main
551 psi
Cylinders, Double Acting - Lift, Bore and Stroke
210 mm × 1050 mm (8.7 in × 41.3 in)
Cylinders, Double Acting - Tilt, Bore and Stroke
269 mm × 685 mm (8.7 in × 27 in)
Lift/Tilt System - Circuit
EH- Positive Flow Control, Flow Sharing
Maximum Flow at 1,400-1,860 rpm
153 gal/min
Pilot System
Variable displacement piston
Relief Valve Setting - Lift/Tilt
4,757 psi

Hydraulic Cycle Time (1,400-1,860 rpm)

Dump
2 s
Lower Float Down
4 s
Rack Back
5 s
Raise
8 s
Total Hydraulic Cycle Time - Empty Bucket
18 s

Sound Performance – Tier 2 Equivalent/Stage II: Standard

Operator Sound Level (ISO 6396)
73 dB(A)

Sound Performance - Tier 2 Equivalent/Stage II: Standard

Machine Sound Level (ISO 6395)
112 dB(A)
Operator Sound Level ( ISO 6396)
73 dB(A)

Sound Performance - Tier 2 Equivalent/Stage II: Suppression

Operator Sound Level (ISO 6396)
72 dB(A)
Machine Sound Level (ISO 6395)
110 dB(A)

Sound Performance - Tier 4 Final/Stage IV - Standard

Machine Sound Level (ISO 6395)
111 dB(A)
Operator Sound Level (ISO 6396)
72 dB(A)

Sound Performance - Tier 4 Final/Stage IV: Suppression

Machine Sound Level (ISO 6395)
109 dB(A)
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

  • 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 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
  • 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, 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
  • 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
  • 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
    • Cat Production Measurement
  • Operator Environment
    • 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
  • Miscellaneous Attachments
    • Front and rear roading fenders
    • Fast fill fuel system (Shaw-Aero)
    • Cold Weather Starting (extra starter plus two batteries)
    • Aggregate Handler
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