988K XE

Heavy Equipment

988K XE

Net Power
541 HP / 403 kW
Operating Weight
116362 lb / 52781 kg
Bore
5.7 in / 145 mm

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 HP / 403 kW
Engine Model Cat® C18 ACERT™
Bore 5.7 in / 145 mm
Stroke 7.2 in / 183 mm
Displacement 1105 in³ / 18.1 l
Rated Speed 1,700 rpm
Emissions U.S. EPA Tier 4 Final/EU Stage IV
Gross Power - ISO 14396 580 HP / 432 kW
Net Power - SAE J1349 541 HP / 403 kW
Peak Power Speed 1,500 rpm
Peak Power Speed - 1,500 rpm - Gross - ISO 14396 580 HP / 432 kW
Peak Power Speed - 1,500 rpm - Gross - SAE J1995 588 HP / 439 kW
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349 541 HP / 403 kW
Peak Torque @ (speed) - SAE J1995 2104 ft·lbf / 2852 N·m
Torque Rise 58%
Operating Specifications
Operating Weight 116362 lb / 52781 kg
Bucket Capacity Range 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 t / 14.5 ton (US)
Rated Payload - Standard (Face Material) 12.5 t / 11.3 ton (US)
Rated Payload - Standard (Loose Material) 16 t / 14.5 ton (US)
Operating Weight - High Lift 119618 lb / 54258 kg
Operating Weight - Standard 116362 lb / 52781 kg
Transmission
Transmission Type Cat switched reluctance electric drive
Forward 1 (virtual) 4.3 mile/h / 7 km/h
Forward 2 (virtual) 7 mile/h / 11.3 km/h
Forward 3 (virtual) 13.8 mile/h / 22.2 km/h
Forward 4 (virtual) 20 mile/h / 32.1 km/h
Reverse 1 (virtual) 4.3 mile/h / 7 km/h
Reverse 2 (virtual) 7 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 mm
Lift Cylinder - Stroke 41.3 in / 1050 mm
Lift/Tilt System - Circuit EH-Positive Flow Control, Flow Sharing
Lift/Tilt System - Pump Variable displacement piston
Maximum Flow at 1,400-1,600 rpm 153 gal/min / 580 l/min
Relief Valve Setting - Lift/Tilt 4757 psi / 32800 kPa
Tilt Cylinder - Bore 8.7 in / 269 mm
Tilt Cylinder - Stroke 27 in / 685 mm
Service Refill Capacities
Fuel Tank 147 gal (US) / 555 l
Transmission 16 gal (US) / 60 l
Cooling System - Jacket Water 30 gal (US) / 112 l
Cooling Systems - Power Train 8 gal (US) / 30 l
Diesel Exhaust Fluid Tank 8.7 gal (US) / 33 l
Differential - Final Drives - Front 49 gal (US) / 186 l
Differential - Final Drives - Rear 49 gal (US) / 186 l
Engine Crankcase 16 gal (US) / 60 l
Hydraulic System - Implement/Steering 126 gal (US) / 475 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.
Buckets
Bucket Capacities 4.7-13 m3 (6.2-17 yd3)
Axles
Front Fixed
Rear Trunnion
Oscillation Angle 13°
Brakes
Brakes ISO 3450:2011
Hydraulic System - Steering
Maximum Flow at 1,400-1,600 rpm 71.3 gal/min / 270 l/min
Steering Cut Off Pressure 4351 psi / 30000 kPa
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°
Steering ISO 5010:2007
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
Sound Performance - Tier 4 Final/Stage IV
Machine Sound Level (ISO 6395) 109 dB(A)
Operator Sound Level (ISO 6396) 72 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.
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.
Dimensions (Approximate) - High Lift
B-Pin Height - Maximum Lift 19.3 ft / 5881 mm
Clearance at Maximum Lift 12.7 ft / 3882 mm
Front Axle Centerline to Bucket Tip 15.9 ft / 4854 mm
Ground to Bumper Clearance 3.1 ft / 933 mm
Ground to Center of Axles 3.2 ft / 978 mm
Ground to Lower Hitch Clearance 1.9 ft / 568 mm
Ground to Top of Exhaust Stacks 14.8 ft / 4498 mm
Ground to Top of Hood 10.9 ft / 3334 mm
Ground to Top of ROPS 13.7 ft / 4187 mm
Maximum Overall Height - Bucket Raised 25.8 ft / 7849 mm
Maximum Overall Length 41.3 ft / 12582 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.
Reach - Maximum Lift 7 ft / 2130 mm
Rear Axle - Centerline to Bumper 10.5 ft / 3187 mm
Wheel Base 14.9 ft / 4550 mm
Dimensions (Approximate) - Standard Lift
B-Pin Height - Maximum Lift 18 ft / 5479 mm
Clearance at Maximum Lift 11.3 ft / 3445 mm
Front Axle Centerline to Bucket Tip 14.7 ft / 4467 mm
Ground to Bumper Clearance 3.1 ft / 933 mm
Ground to Center of Axles 3.2 ft / 978 mm
Ground to Lower Hitch Clearance 1.9 ft / 568 mm
Ground to Top of Exhaust Stacks 14.8 ft / 4498 mm
Ground to Top of Hood 10.9 ft / 3334 mm
Ground to Top of ROPS 13.7 ft / 4187 mm
Maximum Overall Height - Bucket Raised 24.5 ft / 7455 mm
Maximum Overall Length 40 ft / 12204 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.
Reach - Maximum Lift 6.8 ft / 2074 mm
Rear Axle - Centerline to Bumper 10.5 ft / 3187 mm
Wheel Base 14.9 ft / 4550 mm
Operator's Cab
ROPS/FOPS ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards

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

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
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