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988K XE

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Power Train

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Structures

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Hydraulics

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Operator Station

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Technology Solutions

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Serviceability

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Customer Support

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Safety

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Sustainability

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System Match Efficiency

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Bucket Ground Engaging Tools

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988K XE 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 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 ACERT 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

988K XE 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
  • 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

Select Units

Overview

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.

Engine

  • Net Power 541.0 HP 403.0 kW
  • Engine Model Cat® C18 ACERT™ Cat® C18 ACERT™
  • Bore 5.7 in 145.0 mm
  • Stroke 7.2 in 183.0 mm
  • Displacement 1105.0 in³ 18.1 l
  • Rated Speed 1,700 rpm 1,700 rpm
  • Emissions U.S. EPA Tier 4 Final/EU Stage IV U.S. EPA Tier 4 Final/EU Stage IV
  • Gross Power - ISO 14396 580.0 HP 432.0 kW
  • Net Power - SAE J1349 541.0 HP 403.0 kW
  • Peak Power Speed 1,500 rpm 1,500 rpm
  • Peak Power Speed - 1,500 rpm - Gross - ISO 14396 580.0 HP 432.0 kW
  • Peak Power Speed - 1,500 rpm - Gross - SAE J1995 588.0 HP 439.0 kW
  • Peak Power Speed - 1,500 rpm - Net Power - SAE J1349 541.0 HP 403.0 kW
  • Peak Torque @ (speed) - SAE J1995 2104.0 ft·lbf 2852.0 N·m
  • Torque Rise 58% 58%

Operating Specifications

  • Operating Weight 116362.0 lb 52781.0 kg
  • Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3) 4.7-13 m3 (6.2-17 yd3)
  • Rated Payload - High Lift (Face Material) 12.5 t 11.3 ton (US)
  • Rated Payload - High Lift (Loose Material) 16.0 t 14.5 ton (US)
  • Rated Payload - Standard (Face Material) 12.5 t 11.3 ton (US)
  • Rated Payload - Standard (Loose Material) 16.0 t 14.5 ton (US)
  • Operating Weight - High Lift 119618.0 lb 54258.0 kg
  • Operating Weight - Standard 116362.0 lb 52781.0 kg

Transmission

  • Transmission Type Cat switched reluctance electric drive Cat switched reluctance electric drive
  • Forward 1 (virtual) 4.3 mile/h 7.0 km/h
  • Forward 2 (virtual) 7.0 mile/h 11.3 km/h
  • Forward 3 (virtual) 13.8 mile/h 22.2 km/h
  • Forward 4 (virtual) 20.0 mile/h 32.1 km/h
  • Reverse 1 (virtual) 4.3 mile/h 7.0 km/h
  • Reverse 2 (virtual) 7.0 mile/h 11.3 km/h
  • Reverse 3 (virtual) 17.5 mile/h 28.2 km/h

Hydraulic System - Lift/Tilt

  • Lift Cylinder - Bore 8.7 in 210.0 mm
  • Lift Cylinder - Stroke 41.3 in 1050.0 mm
  • Lift/Tilt System - Circuit EH-Positive Flow Control, Flow Sharing EH-Positive Flow Control, Flow Sharing
  • Lift/Tilt System - Pump Variable displacement piston Variable displacement piston
  • Maximum Flow at 1,400-1,600 rpm 153.0 gal/min 580.0 l/min
  • Relief Valve Setting - Lift/Tilt 4757.0 psi 32800.0 kPa
  • Tilt Cylinder - Bore 8.7 in 269.0 mm
  • Tilt Cylinder - Stroke 27.0 in 685.0 mm

Service Refill Capacities

  • Fuel Tank 147.0 gal (US) 555.0 l
  • Transmission 16.0 gal (US) 60.0 l
  • Cooling System - Jacket Water 30.0 gal (US) 112.0 l
  • Cooling Systems - Power Train 8.0 gal (US) 30.0 l
  • Diesel Exhaust Fluid Tank 8.7 gal (US) 33.0 l
  • Differential - Final Drives - Front 49.0 gal (US) 186.0 l
  • Differential - Final Drives - Rear 49.0 gal (US) 186.0 l
  • Engine Crankcase 16.0 gal (US) 60.0 l
  • Hydraulic System - Implement/Steering 126.0 gal (US) 475.0 l
  • 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 specifications is blended with ULSD. – Cat DEO-ULS™ or oils that meet the Cat ECF-3, API CJ-4, and ACEA E9 specifications are required. – Only use DEF that meets ISO 22241-1 standards. 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 specifications is blended with ULSD. – Cat DEO-ULS™ or oils that meet the Cat ECF-3, API CJ-4, and ACEA E9 specifications are required. – Only use DEF that meets ISO 22241-1 standards.

Buckets

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

Axles

  • Front Fixed Fixed
  • Rear Trunnion Trunnion
  • Oscillation Angle 13° 13°

Brakes

  • Brakes ISO 3450:2011 ISO 3450:2011

Hydraulic System - Steering

  • Maximum Flow at 1,400-1,600 rpm 71.3 gal/min 270.0 l/min
  • Steering Cut Off Pressure 4351.0 psi 30000.0 kPa
  • Steering Cycle Times - High Idle 3.4 s 3.4 s
  • Steering Cycle Times - Low Idle 5.6 s 5.6 s
  • Steering System - Circuit Pilot, load sensing Pilot, load sensing
  • Steering System - Pump Piston, variable displacement Piston, variable displacement
  • Total Steering Angle 86° 86°
  • Steering ISO 5010:2007 ISO 5010:2007

Hydraulic Cycle Times

  • Dump 2.2 s 2.2 s
  • Lower Float Down 3.5 s 3.5 s
  • Rack Back 4.5 s 4.5 s
  • Raise 8.0 s 8.0 s
  • Total Hydraulic Cycle Time 18.2 s 18.2 s

Sound Performance - Tier 4 Final/Stage IV

  • Machine Sound Level (ISO 6395) 109.0 dB(A) 109.0 dB(A)
  • Operator Sound Level (ISO 6396) 72.0 dB(A) 72.0 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. 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. 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. 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.

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. 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.

Dimensions (Approximate) - High Lift

  • B-Pin Height - Maximum Lift 19.3 ft 5881.0 mm
  • Clearance at Maximum Lift 12.7 ft 3882.0 mm
  • Front Axle Centerline to Bucket Tip 15.9 ft 4854.0 mm
  • Ground to Bumper Clearance 3.1 ft 933.0 mm
  • Ground to Center of Axles 3.2 ft 978.0 mm
  • Ground to Lower Hitch Clearance 1.9 ft 568.0 mm
  • Ground to Top of Exhaust Stacks 14.8 ft 4498.0 mm
  • Ground to Top of Hood 10.9 ft 3334.0 mm
  • Ground to Top of ROPS 13.7 ft 4187.0 mm
  • Maximum Overall Height - Bucket Raised 25.8 ft 7849.0 mm
  • Maximum Overall Length 41.3 ft 12582.0 mm
  • 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. 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.
  • Reach - Maximum Lift 7.0 ft 2130.0 mm
  • Rear Axle - Centerline to Bumper 10.5 ft 3187.0 mm
  • Wheel Base 14.9 ft 4550.0 mm

Dimensions (Approximate) - Standard Lift

  • B-Pin Height - Maximum Lift 18.0 ft 5479.0 mm
  • Clearance at Maximum Lift 11.3 ft 3445.0 mm
  • Front Axle Centerline to Bucket Tip 14.7 ft 4467.0 mm
  • Ground to Bumper Clearance 3.1 ft 933.0 mm
  • Ground to Center of Axles 3.2 ft 978.0 mm
  • Ground to Lower Hitch Clearance 1.9 ft 568.0 mm
  • Ground to Top of Exhaust Stacks 14.8 ft 4498.0 mm
  • Ground to Top of Hood 10.9 ft 3334.0 mm
  • Ground to Top of ROPS 13.7 ft 4187.0 mm
  • Maximum Overall Height - Bucket Raised 24.5 ft 7455.0 mm
  • Maximum Overall Length 40.0 ft 12204.0 mm
  • 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. 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.
  • Reach - Maximum Lift 6.8 ft 2074.0 mm
  • Rear Axle - Centerline to Bumper 10.5 ft 3187.0 mm
  • Wheel Base 14.9 ft 4550.0 mm

Operator's Cab

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