988K XE

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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

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

Operating Specifications

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

Transmission

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

Hydraulic System - Lift/Tilt

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

Service Refill Capacities

Fuel Tank 147.0 gal (US) 555.0 l Less
Transmission 16.0 gal (US) 60.0 l Less
Cooling System - Jacket Water 30.0 gal (US) 112.0 l Less
Cooling Systems - Power Train 8.0 gal (US) 30.0 l Less
Diesel Exhaust Fluid Tank 8.7 gal (US) 33.0 l Less
Differential - Final Drives - Front 49.0 gal (US) 186.0 l Less
Differential - Final Drives - Rear 49.0 gal (US) 186.0 l Less
Engine Crankcase 16.0 gal (US) 60.0 l Less
Hydraulic System - Implement/Steering 126.0 gal (US) 475.0 l Less
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 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 Less

Buckets

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

Axles

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

Brakes

Brakes ISO 3450:2011 ISO 3450:2011 Less

Hydraulic System - Steering

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

Hydraulic Cycle Times

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

Sound Performance - Tier 4 Final/Stage IV

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

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. Less

Dimensions (Approximate) - High Lift

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

Dimensions (Approximate) - Standard Lift

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

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 Less

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

Efficiency

Power Train

Structures

Hydraulics

Operator Station

Technology Solutions

Serviceability

Customer Support

Safety

Sustainability

System Match Efficiency

Bucket Ground Engaging Tools