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988K XE 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 over 50 years, built on a legacy of reliability, performance, safety, operator comfort, serviceability, and productivity. The 988K XE brings improved sustainability and maximum efficiency to this machine platform.

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SPECIFICATION SUMMARY
  • Net Power 541 hp
  • Operating Weight 116362 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

  • 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
  • Gross Power – ISO 14396
    580 hp
  • Peak Torque @ (speed) – SAE J1995
    2104 lbf-ft
  • 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
  • Net Power
    541 HP
  • Engine Model
    Cat® C18 ™
  • Bore
    5.7 in
  • Stroke
    7.2 in
  • Displacement
    1105 in³
  • Rated Speed
    1,700 rpm
  • Emissions
    U.S. EPA Tier 4 Final/EU Stage IV
  • Gross Power - ISO 14396
    580 HP
  • Net Power - SAE J1349
    541 HP
  • Peak Torque @ (speed) - SAE J1995
    2104 ft·lbf
  • Torque Rise
    58%

Operating Specifications

  • Operating Weight
    116362 lb
  • Rated Payload – Standard (face material)
    12.5 tons
  • Rated Payload – Standard (loose material)
    16 tons
  • Rated Payload – High Lift (face material)
    12.5 tons
  • Rated Payload – High Lift (loose material)
    16 tons
  • Bucket Capacity Range
    4.7-13 m3 (6.2-17 yd3)
  • Operating Weight – Standard
    116362 lb
  • Operating Weight – High Lift
    119618 lb
  • Operating Weight
    116362 lb
  • Rated Payload - High Lift (Moderate to High Digging Resistance)
    12.5 t
  • Rated Payload - High Lift (Low to Moderate Digging Resistance)
    16 t
  • Rated Payload - Standard Lift (Moderate to High Digging Resistance)
    12.5 t
  • Rated Payload - Standard Lift (Low to Moderate Digging Resistance)
    16 t
  • Operating Weight - High Lift
    119618 lb
  • Operating Weight - Standard
    116362 lb
  • Rated Payload - Loose Material (Standard)
    16 ton (US)
  • Rated Payload - Standard (Quarry Face)
    12.5 ton (US)

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 switched reluctance electric drive
  • Forward 1 (virtual)
    4.3 mile/h
  • Forward 2 (virtual)
    7 mile/h
  • Forward 3 (virtual)
    13.8 mile/h
  • Forward 4 (virtual)
    20 mile/h
  • Reverse 1 (virtual)
    4.3 mile/h
  • Reverse 2 (virtual)
    7 mile/h
  • Reverse 3 (virtual)
    17.5 mile/h
  • Transmission Type
    Cat switched reluctance electric drive

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
  • Steering Cut Off Pressure
    4351 psi
  • Total Steering Angle
    86°
  • Steering Cycle Time (high idle)
    3.4 sec
  • Steering Cycle Time (low idle)
    5.6 sec

Service Refill Capacities

  • Fuel Tank
    147 gal
  • Cooling System (jacket water)
    30 gal
  • Cooling Systems (power train)
    8 gal
  • Engine Crankcase
    16 gal
  • Diesel Exhaust Fluid Tank
    8.7 gal
  • Transmission
    16 gal
  • Differentials and final drives – front
    49 gal
  • Differentials and final drives – rear
    49 gal
  • Hydraulic System – implement/steering
    126 gal
  • Note
    All non-road Tier 4 Final/Stage IV diesel engines are required to use: – The machine has the flexibility to run on either ultra-low-sulfur diesel fuel (ULSD with 15 ppm of sulfur or less) or up to B20 biodiesel when feedstock meeting ASTM D7467 specificat
  • Fuel Tank
    147 gal (US)
  • Transmission
    16 gal (US)
  • Cooling System - Jacket Water
    30 gal (US)
  • Cooling Systems - Power Train
    8 gal (US)
  • Diesel Exhaust Fluid Tank
    8.7 gal (US)
  • Differential - Final Drives - Front
    49 gal (US)
  • Differential - Final Drives - Rear
    49 gal (US)
  • Engine Crankcase
    16 gal (US)
  • Hydraulic System - Implement/Steering
    126 gal (US)
  • Note
    All non-road Tier 4 Final/Stage IV diesel engines are required to use: – The machine has the flexibility to run on either ultra-low-sulfur diesel fuel (ULSD with 15 ppm of sulfur or less) or up to B20 biodiesel when feedstock meeting ASTM D7467 specificat

Hydraulic System Lift/Tilt

  • Lift/Tilt System Pumps
    Variable displacement piston
  • Lift Cylinder – Bore
    8.7 in
  • Lift Cylinder – Stroke
    41.3 in
  • Tilt Cylinder – Bore
    8.7 in
  • Tilt Cylinder – Stroke
    27 in
  • Lift/Tilt System – Circuit
    EH-Positive Flow Control, Flow Sharing
  • Relief Valve Setting – Lift/Tilt
    4757 psi

Hydraulic Cycle Time

  • Rackback
    4.5 Seconds
  • Raise
    8 Seconds
  • Dump
    2.2 Seconds
  • Lower Float Down
    3.5 Seconds
  • Total Hydraulic Cycle Time
    18.2 Seconds

Brakes

  • Brakes
    ISO 3450:2011
  • Brakes
    ISO 3450:2011

Hydraulic System - Steering

  • Maximum Flow at 1,400-1,600 rpm
    71.3 gal/min
  • Steering
    ISO 5010:2007
  • Steering Cut Off Pressure
    4351 psi
  • Steering Cycle Times - High Idle
    3.4 s
  • Steering Cycle Times - Low Idle
    5.6 s
  • Steering System - Circuit
    Pilot, load sensing
  • Steering System - Pump
    Piston, variable displacement
  • Total Steering Angle
    86°

Sound Performance - Tier 4 Final/Stage IV

  • Operator Sound Level (ISO 6396)
    72 dB(A)
  • Machine Sound Level (ISO 6395)
    109 dB(A)
  • Note (1)
    The operator sound pressure level was measured according to the test procedures and conditions specified in ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.
  • Note (2)
    Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment.
  • Note (3)
    The machine sound power level was measured according to the test procedures and conditions specified in ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.

Hydraulic System - Lift/Tilt

  • Maximum Flow at 1,400-1,600 rpm
    153 gal/min
  • Lift Cylinder - Bore
    8.7 in
  • Lift Cylinder - Stroke
    41.3 in
  • Lift/Tilt System - Circuit
    EH-Positive Flow Control, Flow Sharing
  • Lift/Tilt System - Pump
    Variable displacement piston
  • Relief Valve Setting - Lift/Tilt
    4757 psi
  • Tilt Cylinder - Bore
    8.7 in
  • Tilt Cylinder - Stroke
    27 in

Air Conditioning System

  • Air Conditioning
    The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes.
  • Air Conditioning
    The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes.

Operator Cab

  • ROPS/FOPS
    ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards

Dimensions (Approximate) - Standard Lift

  • Ground to Top of ROPS
    13.7 ft
  • Ground to Top of Exhaust Stacks
    14.8 ft
  • Ground to Top of Hood
    10.9 ft
  • Ground to Bumper Clearance
    3.1 ft
  • Rear Axle - Centerline to Bumper
    10.5 ft
  • Front Axle Centerline to Bucket Tip
    14.7 ft
  • Wheel Base
    14.9 ft
  • Maximum Overall Length
    40 ft
  • Ground to Lower Hitch Clearance
    1.9 ft
  • Ground to Center of Axles
    3.2 ft
  • Clearance at Maximum Lift
    11.3 ft
  • B-Pin Height - Maximum Lift
    18 ft
  • Maximum Overall Height - Bucket Raised
    24.5 ft
  • Reach - Maximum Lift
    6.8 ft
  • Note
    Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height.

Dimensions (Approximate) - High Lift

  • Ground to Top of ROPS
    13.7 ft
  • Ground to Top of Exhaust Stacks
    14.8 ft
  • Ground to Top of Hood
    10.9 ft
  • Ground to Bumper Clearance
    3.1 ft
  • Rear Axle - Centerline to Bumper
    10.5 ft
  • Front Axle Centerline to Bucket Tip
    15.9 ft
  • Maximum Overall Length
    41.3 ft
  • Ground to Lower Hitch Clearance
    1.9 ft
  • Ground to Center of Axles
    3.2 ft
  • Clearance at Maximum Lift
    12.7 ft
  • B-Pin Height - Maximum Lift
    19.3 ft
  • Maximum Overall Height - Bucket Raised
    25.8 ft
  • Reach - Maximum Lift
    7 ft
  • Note
    Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height.
  • Wheel Base
    14.9 ft

Dimensions (Approximate) – High Lift

  • Wheel Base
    14.9 ft

Hydraulic Cycle Times

  • Dump
    2.2 s
  • Lower Float Down
    3.5 s
  • Rack Back
    4.5 s
  • Raise
    8 s
  • Total Hydraulic Cycle Time
    18.2 s

Operator's Cab

  • ROPS/FOPS
    ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards

POWERFUL EFFICIENCY

PROVEN RELIABILITY

LONG TERM VALUE AND DURABILITY

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

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
    • Hazardous voltage lamp
  • 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
    • CB radio-ready
    • Mirrors, rearview (externally mounted)
    • Rimpull Control System
    • Seat, Cat Comfort Series III, heated and ventilated, air suspension, six-way adjustable
    • Seat belt minder
    • Seat belt, retractable, 76 mm (3 in) wide
    • STIC Control System
    • UV glass
    • Virtual 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
    • 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
    • Manual switch and automatic fuel priming
    • Cat Production Measurement ready
    • Cat SR Generator/Pump Drive
    • Cat SR Drive Motor
    • Cat Integrated Powered Electronics
    • Automatic retarding controls
  • 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, 555 L (147 gal)
    • Hitch, drawbar with pin
    • Hoses, Cat XT
    • Hydraulic, steering and brake filtration/screening system
    • Cat Clean Emission Module
    • Oil sampling valves
    • Premixed 50 percent 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
    • Cat Production Measurement
    • Crankcase guard
  • Operator Environment
    • Cab precleaner
    • AM/FM/CD/MP3 radio
    • Satellite Sirius radio with Bluetooth®
    • LED warning strobe
    • 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
    • Tire Pressure Monitoring System
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