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Efficiency

Delivering fuel efficiency you demand through electric drive technology.


Power Train

Move material more efficiently with improved power and control.


Structures

Best built for the toughest conditions.


Hydraulics

Productivity enabling you to move more and make more.


Operator Station

Best-in-class operator comfort and ergonomics.


Technology Solutions

Greater productivity through Integrated Electronic Systems.


Serviceability

Enabling high uptime by reducing your service time.


Customer Support

Your Cat dealers know how to keep your machines productive.


Safety

Making your safety our priority.


Sustainability

Stewards of the environment.


System Match Efficiency

Efficient loading/hauling system starts with a perfect match.


Bucket Ground Engaging Tools

Protect your investment.


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

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
Net Power – SAE J1349 541.0 hp 403.0 kW Less
Torque Rise 58% 58% 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
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 lbf-ft 2852.0 N·m 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 – Standard (face material) 12.5 tons 11.3 tonnes Less
Rated Payload – Standard (loose material) 16.0 tons 14.5 tonnes Less
Rated Payload – High Lift (face material) 12.5 tons 11.3 tonnes Less
Rated Payload – High Lift (loose material) 16.0 tons 14.5 tonnes Less
Operating Weight – Standard 116362.0 lb 52781.0 kg Less
Operating Weight – High Lift 119618.0 lb 54258.0 kg Less

Transmission

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

Hydraulic System Lift/Tilt

Lift/Tilt System – Circuit EH-Positive Flow Control, Flow Sharing EH-Positive Flow Control, Flow Sharing Less
Lift/Tilt System Pumps 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
Lift Cylinder – Bore 8.7 in 210.0 mm Less
Lift Cylinder – Stroke 41.3 in 1050.0 mm 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 555.0 L Less
Transmission 16.0 gal 60.0 L Less
Cooling System (jacket water) 30.0 gal 112.0 L Less
Cooling Systems (power train) 8.0 gal 30.0 L Less
Engine Crankcase 16.0 gal 60.0 L Less
Diesel Exhaust Fluid Tank 8.7 gal 33.0 L Less
Differentials and final drives – front 49.0 gal 186.0 L Less
Differentials and final drives – rear 49.0 gal 186.0 L Less
Hydraulic System – implement/steering 126.0 gal 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 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. 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

Steering System – Circuit Pilot, load sensing Pilot, load sensing Less
Steering System – Pump Piston, variable displacement Piston, variable displacement Less
Maximum Flow @ × 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
Total Steering Angle 86° 86° Less
Steering Cycle Time (high idle) 3.4 sec 3.4 sec Less
Steering Cycle Time (low idle) 5.6 sec 5.6 sec Less
Steering ISO 5010:2007 ISO 5010:2007 Less

Hydraulic Cycle Time

Rackback 4.5 Seconds 4.5 Seconds Less
Raise 8.0 Seconds 8.0 Seconds Less
Dump 2.2 Seconds 2.2 Seconds Less
Lower Float Down 3.5 Seconds 3.5 Seconds Less
Total Hydraulic Cycle Time 18.2 Seconds 18.2 Seconds Less

Sound Performance – Tier 4 Final/Stage IV

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

Operator 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

Dimensions (Approximate) – Standard Lift

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

Dimensions (Approximate) – High Lift

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