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988K XE Wheel Loader

988K XE Wheel Loader

At a Glance

Net Power
541 HP
Operating Weight
116362 lb
Bucket Capacities
4.7-13 m3 (6.2-17 yd3)
Engine Model
Cat® C18 ACERT™
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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

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Net Power 541HP
Engine Model Cat® C18 ACERT™
Bore 5.7in
Stroke 7.2in
Displacement 1105in³
Rated Speed 1,700 rpm
Peak Power Speed 1,500 rpm
Peak Power Speed - 1,500 rpm - Gross - ISO 14396 580HP
Peak Power Speed - 1,500 rpm - Gross - SAE J1995 588HP
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349 541HP
Emissions U.S. EPA Tier 4 Final/EU Stage IV
Gross Power - ISO 14396 580HP
Net Power - SAE J1349 541HP
Peak Torque @ (speed) - SAE J1995 2104ft·lbf
Torque Rise 58%

Operating Specifications

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Operating Weight 116362lb
Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3)
Rated Payload - High Lift (Face Material) 12.5t
Rated Payload - High Lift (Loose Material) 16t
Rated Payload - Standard (Face Material) 12.5t
Rated Payload - Standard (Loose Material) 16t
Operating Weight - High Lift 119618lb
Operating Weight - Standard 116362lb

Buckets

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

Transmission

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Transmission Type Cat switched reluctance electric drive
Forward 1 (virtual) 4.3mile/h
Forward 2 (virtual) 7mile/h
Forward 3 (virtual) 13.8mile/h
Forward 4 (virtual) 20mile/h
Reverse 1 (virtual) 4.3mile/h
Reverse 2 (virtual) 7mile/h
Reverse 3 (virtual) 17.5mile/h

Axles

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Front Fixed
Rear Trunnion
Oscillation Angle 13°

Service Refill Capacities

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Fuel Tank 147gal (US)
Transmission 16gal (US)
Cooling System - Jacket Water 30gal (US)
Cooling Systems - Power Train 8gal (US)
Diesel Exhaust Fluid Tank 8.7gal (US)
Differential - Final Drives - Front 49gal (US)
Differential - Final Drives - Rear 49gal (US)
Engine Crankcase 16gal (US)
Hydraulic System - Implement/Steering 126gal (US)
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

Hydraulic System - Steering

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Maximum Flow at 1,400-1,600 rpm 71.3gal/min
Steering ISO 5010:2007
Steering Cut Off Pressure 4351psi
Steering Cycle Times - High Idle 3.4s
Steering Cycle Times - Low Idle 5.6s
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Total Steering Angle 86°

Sound Performance - Tier 4 Final/Stage IV

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

Hydraulic System - Lift/Tilt

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Maximum Flow at 1,400-1,600 rpm 153gal/min
Lift Cylinder - Bore 8.7in
Lift Cylinder - Stroke 41.3in
Lift/Tilt System - Circuit EH-Positive Flow Control, Flow Sharing
Lift/Tilt System - Pump Variable displacement piston
Relief Valve Setting - Lift/Tilt 4757psi
Tilt Cylinder - Bore 8.7in
Tilt Cylinder - Stroke 27in

Dimensions (Approximate) - Standard Lift

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Ground to Top of ROPS 13.7ft
Ground to Top of Exhaust Stacks 14.8ft
Ground to Top of Hood 10.9ft
Ground to Bumper Clearance 3.1ft
Rear Axle - Centerline to Bumper 10.5ft
Front Axle Centerline to Bucket Tip 14.7ft
Wheel Base 14.9ft
Maximum Overall Length 40ft
Ground to Lower Hitch Clearance 1.9ft
Ground to Center of Axles 3.2ft
Clearance at Maximum Lift 11.3ft
B-Pin Height - Maximum Lift 18ft
Maximum Overall Height - Bucket Raised 24.5ft
Reach - Maximum Lift 6.8ft
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

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Ground to Top of ROPS 13.7ft
Ground to Top of Exhaust Stacks 14.8ft
Ground to Top of Hood 10.9ft
Ground to Bumper Clearance 3.1ft
Rear Axle - Centerline to Bumper 10.5ft
Front Axle Centerline to Bucket Tip 15.9ft
Maximum Overall Length 41.3ft
Ground to Lower Hitch Clearance 1.9ft
Ground to Center of Axles 3.2ft
Clearance at Maximum Lift 12.7ft
B-Pin Height - Maximum Lift 19.3ft
Maximum Overall Height - Bucket Raised 25.8ft
Reach - Maximum Lift 7ft
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.
Wheel Base 14.9ft

Hydraulic Cycle Times

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Dump 2.2s
Lower Float Down 3.5s
Rack Back 4.5s
Raise 8s
Total Hydraulic Cycle Time 18.2s

Air Conditioning System

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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.

Operator's Cab

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

Brakes

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Brakes ISO 3450:2011