988K XE Wheel Loader

  • Exterior View
  • Exterior View
  • Interior View
  • Interior View

Engine

Engine Model
Cat® C18 ™
Rated Speed
1,700 rpm
Peak Power Speed
1,500 rpm
Gross Power - SAE J1995
588 HP
Net Power - SAE J1349
538 HP
Emissions
U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014
Bore
6 in
Stroke
7 in
Displacement
1,105 in³
Peak Torque - 1,200 rpm - SAE J1995
2,230 ft·lbf
Torque Rise
58%
Engine Power - ISO 14396
580 HP

Operating Specifications

Operating Weight
116,362 lb
Operating Weight - Standard
116,362 lb
Operating Weight - High Lift
119,618 lb
Rated Payload - Standard (Quarry Face)
13 ton (US)
Rated Payload - Loose Material (Standard)
16 ton (US)
Bucket Capacity Range
4.7-13 m3 (6.2-17 yd3)

Transmission

Transmission Type
Cat switched reluctance electric drive
Forward 1 (virtual)
4 mile/h
Forward 2 (virtual)
7 mile/h
Forward 3 (virtual)
14 mile/h
Forward 4 (virtual)
20 mile/h
Reverse 1 (virtual)
4 mile/h
Reverse 2 (virtual)
7 mile/h
Reverse 3 (virtual)
18 mile/h

Hydraulic System - Lift/Tilt

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
Relief Valve Setting - Lift/Tilt
4,757 psi
Lift Cylinder - Bore
9 in
Lift Cylinder - Stroke
41 in
Tilt Cylinder - Bore
9 in
Tilt Cylinder - Stroke
27 in

Hydraulic Cycle Times

Rack Back
5 s
Raise
8 s
Dump
2 s
Lower Float Down
4 s
Total Hydraulic Cycle Time
18 s

Hydraulic System - Steering

Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Maximum Flow at 1,400-1,600 rpm
71 gal/min
Steering Cut Off Pressure
4,351 psi
Total Steering Angle
86°
Steering Cycle Times - High Idle
3 s
Steering Cycle Times - Low Idle
6 s

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.

Axles

Front
Fixed
Rear
Trunnion
Oscillation Angle
13°

Brakes

Brakes
ISO 3450:2011

Operator's Cab

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

Service Refill Capacities

Fuel Tank
147 gal (US)
Cooling System - Jacket Water
30 gal (US)
Cooling Systems - Power Train
8 gal (US)
Engine Crankcase
16 gal (US)
Diesel Exhaust Fluid Tank
9 gal (US)
Transmission
16 gal (US)
Differential - Final Drives - Front
49 gal (US)
Differential - Final Drives - Rear
49 gal (US)
Hydraulic System - Implement/Steering
126 gal (US)
Note
All nonroad Tier 4 Final/Stage V 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). – Cat engines are compatible with the following renewable, alternati

Dimensions (Approximate) - Standard Lift

Ground to Top of ROPS
14 ft
Ground to Top of Exhaust Stacks
15 ft
Ground to Top of Hood
11 ft
Ground to Bumper Clearance
3 ft
Rear Axle - Centerline to Bumper
11 ft
Front Axle Centerline to Bucket Tip
14 ft
Wheel Base
15 ft
Maximum Overall Length
39 ft
Ground to Lower Hitch Clearance
2 ft
Ground to Center of Axles
3 ft
Clearance at Maximum Lift
12 ft
B-Pin Height - Maximum Lift
18 ft
Reach - Maximum Lift
7 ft
Maximum Overall Height - Bucket Raised
25 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
14 ft
Ground to Top of Exhaust Stacks
15 ft
Ground to Top of Hood
11 ft
Ground to Bumper Clearance
3 ft
Rear Axle - Centerline to Bumper
11 ft
Front Axle Centerline to Bucket Tip
15 ft
Wheel Base
15 ft
Maximum Overall Length
41 ft
Ground to Lower Hitch Clearance
2 ft
Ground to Center of Axles
3 ft
Clearance at Maximum Lift
13 ft
B-Pin Height - Maximum Lift
19 ft
Maximum Overall Height - Bucket Raised
26 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.

Buckets

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

Sound Performance - Tier 4 Final/Stage IV

Machine Sound Level (ISO 6395)
109 dB(A)
Operator Sound Level (ISO 6396)
72 dB(A)
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 (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 (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.

Sound Performance - Tier 4 Final/EU Stage V - Standard

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.
Operator Sound Level (ISO 6396)
72 dB(A)

Sustainability

Recyclability
96%

PROVEN RELIABILITY

LONG TERM VALUE AND DURABILITY

ACHIEVE GREATER PRODUCTIVITY

POWERFUL EFFICIENCY

PRODUCTIVITY WITH TECHNOLOGY

SAFETY FIRST

SAVE ON SERVICE AND MAINTENANCE

OPERATOR COMFORT AND CONTROL

PURPOSE-BUILT SPECIALTY MODELS

SUSTAINABILITY

  • 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 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
  • Additional Equipment
    • 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
  • 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
    • Engine brake, SEA
  • Other Optional Configurations
    • Aggregate Handler
    • Millyard
    • Load and Carry
  • Operator Environment
    • Cat Detect, object detection system
    • Cab precleaner
    • AM/FM/CD/MP3 radio
    • Satellite Sirius radio with Bluetooth®
    • LED warning strobe
    • Window pull down visor
    • Handrail mounted mirrors
  • Additional Equipment
    • Front and rear roading fenders
    • Fast fill fuel system (Shaw-Aero)
    • Cold Weather Starting (extra starter plus two batteries)
    • Aggregate Handler
    • Autodig feature, Tire Slip Prevention
    • Wheel Chocks
    • EZ Clean cooling system
    • Autodig features, Auto Set Tires & Lift Stall Prevention
    • Autolube with Auto shutoff
    • Tire Pressure Monitoring System
    • Load and Carry Counterweight
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