988 XE Wheel Loader

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 60 years, built on a legacy of reliability, performance, safety, operator comfort, serviceability, and productivity. The 988 XE brings improved sustainability and maximum efficiency to this machine platform.

Key Features

More Comfort. More Performance. More Versatility.

LESS FUEL CONSUMPTION

Cycle time improvements in load & carry applications, along with improved stability and faster maneuvering with an optional counterweight result in increased productivity.

LESS POWERTRAIN MAINTENANCE

Reduce your powertrain maintenance by 50% with 2,000-hour service intervals and no component rebuild until 17,500 hours.

MORE EFFICIENT DIG CYCLES

Designed for easier operation with single pedal with dynamic braking and operator assist features, for faster training of new operators.

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Specifications

Engine Power - ISO 14396:2002	580 hp
Engine Model	Cat® C18
Rated Speed	1,700 rpm
Peak Power Speed	1,500 rpm
Gross Power - SAE J1995:2014	588 hp
Net Power - SAE J1349:2011	538 hp
Bore	5.7 in
Stroke	7.2 in
Displacement	1105 in³
Peak Torque - 1,200 rpm	2230 lbf·ft
Torque Rise	58%
Note (1)	Two engine emissions options are available: 1. Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards. 2. Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
Note (2)	Net power advertised is the power available at the flywheel when the engine is equipped with fan at minimum speed, air intake system, exhaust system, and alternator.

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

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

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 gpm
Relief Valve Setting - Lift/Tilt	4757 psi
Lift Cylinder - Bore	8.7 in
Lift Cylinder - Stroke	41.3 in
Tilt Cylinder - Bore	8.7 in
Tilt Cylinder - Stroke	27 in

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

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

Air Conditioning	The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. • If equipped with R134a (Global Warming Potential = 1430), the system contains 1.8 kg (3.9 lb) of refrigerant which has a CO2 equivalent of 2.574 metric tonnes (2.837 tons).

Front	Fixed
Rear	Trunnion
Oscillation Angle	13°

Brakes	ISO 3450:2011

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

Operator Sound Pressure Level (ISO 6396:2008)	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)	109 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)**	109 dB(A)
Note (1)	* For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives”
Note (2)	** European Union Directive “2000/14/EC” as amended by “2005/88/EC” and UK Noise Regulation 2001 No. 1701
Note (3)	The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (4)	The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (5)	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.

Operator Sound Pressure Level (ISO 6396:2008)	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)	110 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)**	110 dB(A)
Note (1)	* For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives”
Note (2)	** European Union Directive “2000/14/EC” as amended by “2005/88/EC” and UK Noise Regulation 2001 No. 1701
Note (3)	The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (4)	The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (5)	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.

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	8.7 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	Cat U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels up to: • 20% biodiesel FAME (fatty acid methyl ester)* • 100% renewable diesel, HVO (hydrotreated vegetable oil and GTL (gas-to- liquid) fuels • Cat engines meeting Brazil MAR-1 emissions standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA, are compatible with diesel fuel blended with the following lower-carbon intensity fuels up to: • 100% biodiesel FAME (fatty acid methyl ester)* • 100% renewable diesel, HVO (hydrotreated vegetable oil and GTL (gas-to- liquid) fuels Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. * While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. * Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).

Ground to Top of ROPS	13.8 ft
Ground to Top of Exhaust Stacks	14.8 ft
Ground to Top of Hood	10.9 ft
Ground to Bumper Clearance	3.1 ft
Rear Axle - Centerline to Bumper	10.5 ft
Front Axle Centerline to Bucket Tip	14 ft
Wheel Base	14.9 ft
Maximum Overall Length	39.3 ft
Ground to Lower Hitch Clearance	1.9 ft
Ground to Center of Axles	3.2 ft
Clearance at Maximum Lift	11.9 ft
B-Pin Height - Maximum Lift	18 ft
Maximum Overall Height - Bucket Raised	24.5 ft
Reach - Maximum Lift	6.5 ft
Note	Specifications 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.

Ground to Top of ROPS	13.8 ft
Ground to Top of Exhaust Stacks	14.8 ft
Ground to Top of Hood	10.9 ft
Ground to Bumper Clearance	3.1 ft
Rear Axle - Centerline to Bumper	10.5 ft
Front Axle Centerline to Bucket Tip	15.3 ft
Wheel Base	14.9 ft
Maximum Overall Length	40.7 ft
Ground to Lower Hitch Clearance	1.9 ft
Ground to Center of Axles	3.2 ft
Clearance at Maximum Lift	13.3 ft
B-Pin Height - Maximum Lift	19.3 ft
Maximum Overall Height - Bucket Raised	25.8 ft
Reach - Maximum Lift	6.8 ft
Note	Specifications 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.

Ground to Top of ROPS	13.8 ft
Ground to Top of Exhaust Stacks	13.8 ft
Ground to Top of Hood	10.9 ft
Ground to Bumper Clearance	3.1 ft
Rear Axle - Centerline to Bumper	10.5 ft
Front Axle Centerline to Fork Tip	16.5 ft
Wheel Base	14.9 ft
Maximum Overall Length	41.9 ft
Ground to Lower Hitch Clearance	1.9 ft
Ground to Center of Front Axle	3.2 ft
Fork Height with Level Arms	8.1 ft
Fork Top Clamp Opening	13.1 ft
Fork Height at Maximum Lift	17.2 ft
Hinge Pin Height at Maximum Lift	16.1 ft
Dump Angle at Maximum Lift	-39.4 °