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Engine
	988 Wheel Loader View Product	990 Wheel Loader View Product Remove	988 XE Wheel Loader View Product Remove
Engine Power - ISO 14396:2002	580 hp	752 hp	580 hp
Engine Model	Cat® C18	Cat® C27	Cat® C18
Rated Speed	1700/rpm	1800 r/min	1,700 rpm
Peak Power Speed	1500/rpm	-	1,500 rpm
Gross Power - SAE J1995:2014	588 hp	766 hp	588 hp
Net Power - SAE J1349:2011	538 hp	-	538 hp
Bore	5.7 in	5.4 in	5.7 in
Stroke	7.2 in	6 in	7.2 in
Displacement	1105 in³	1649.5 in³	1105 in³
Peak Torque - 1,200 rpm	2104 lbf·ft	2624 lb/ft	2230 lbf·ft
Torque Rise	58 %	18 %	58%
Note (1)	Three engine emission 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. 3. Meets China Nonroad Stage IV emissio	-	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.	-	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.
Emissions	-	Option 2 - Emits equivalent to U.S. EPA Tier 2	-
Net Power - SAE J1349:2011 - Standard Ambient	-	699 hp	-
Net Power - SAE J1349:2011 - High Ambient	-	648 hp	-
Note	-	Net power advertised is the power available at the flywheel when the engine is equipped with fan at minimum speed, air intake sytstem, exhaust system, and alternator.	-
Operating Specifications
Operating Weight	112574 lb	-	116362 lb
Bucket Capacity Range	4.7-13 m3 (6.2-17 yd3)	8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³)	4.7-13 m3 (6.2-17 yd3)
Rated Payload - Quarry Face	12.5 t	-	12.5 t
Rated Payload - Loose Material	16 t	-	16 t
Cat Truck Match - Standard	770 - 772	773-775	-
Cat Truck Match - High Lift	773 - 775	775-777	-
Operating Weight - Standard	-	178517 lb	-
Rated Payload - Standard	-	17.5 ton (US)	-
Rated Payload - High Lift	-	17.5 ton (US)	-
Transmission
Transmission Type	Cat planetary powershift	Cat planetary power shift	Cat switched reluctance electric drive
Forward - 1	4 mile/h	4.6 mile/h	-
Forward - 2	7.2 mile/h	8.2 mile/h	-
Forward - 3	12.7 mile/h	14.5 mile/h	-
Forward - 4	21.6 mile/h	-	-
Reverse - 1	4.7 mile/h	5.1 mile/h	-
Reverse - 2	8.3 mile/h	9.1 mile/h	-
Reverse - 3	14.4 mile/h	16 mile/h	-
Direct Drive - Forward 1	Lock-up disabled	Lock-up disabled	-
Direct Drive - Forward 2	7.8 mile/h	8.2 mile/h	-
Direct Drive - Forward 3	13.9 mile/h	14.5 mile/h	-
Direct Drive - Forward 4	24.4 mile/h	-	-
Direct Drive - Reverse 1	5 mile/h	5.1 mile/h	-
Direct Drive - Reverse 2	8.9 mile/h	9.1 mile/h	-
Direct Drive - Reverse 3	15.8 mile/h	16 mile/h	-
Note	-	Travel speeds based on Michelin 45/65R39 LD D2**L5 tires.	-
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
Hydraulic System - Lift/Tilt
Lift/Tilt System - Circuit	EH- Positive Flow Control, Flow Sharing	Positive flow control	EH-Positive Flow Control, Flow Sharing
Lift/Tilt System - Pump	Variable displacement piston	-	Variable displacement piston
Maximum Flow at 1,400-1,860 rpm	153 gpm	-	-
Relief Valve Setting - Lift/Tilt	4757 psi	4786 psi	4757 psi
Cylinders, Double Acting - Lift, Bore and Stroke	210 mm × 1050 mm (8.7 in × 41.3 in)	235 mm × 1287 mm (9.3 in × 50.7 in)	-
Cylinders, Double Acting - Tilt, Bore and Stroke	266 mm × 685 mm (8.7 in × 27 in)	292.1 mm × 820 mm (11.5 in × 32.3 in)	-
Pilot System	Variable displacement piston	Open loop and pressure reducing	-
Relief Valve Setting - Main	551 psi	-	-
Lift/Tilt System	-	Variable displacement piston	-
Maximum Flow at 1,800 rpm	-	240 gpm	-
Pilot Relief Setting	-	507 psi	-
Maximum Flow at 1,400-1,600 rpm	-	-	153 gpm
Lift Cylinder - Bore	-	-	8.7 in
Lift Cylinder - Stroke	-	-	41.3 in
Tilt Cylinder - Bore	-	-	8.7 in
Tilt Cylinder - Stroke	-	-	27 in
Hydraulic Cycle Time (1,400-1,860 rpm)
Rack Back	4.5 s	-	-
Raise	8 s	-	-
Dump	2.2 s	-	-
Lower Float Down	3.5 s	-	-
Total Hydraulic Cycle Time - Empty Bucket	18.2 s	-	-
Hydraulic System - Steering
Steering System - Circuit	Pilot, load sensing	Pilot, load sensing	Pilot, load sensing
Steering System - Pump	Piston, variable displacement	Piston, variable displacement	Piston, variable displacement
Maximum Flow at 1,400-1,600 rpm	71.3 gpm	-	71.3 gpm
Relief Valve Setting - Steering	4351 psi	5004 psi	-
Total Steering Angle	86 °	70°	86°
Steering Cycle Times - High Idle	3.4 s	-	3.4 s
Steering Cycle Times - Low Idle	5.6 s	-	5.6 s
Maximum Flow at 1,400 rpm	-	96.2 gpm	-
Steering Cut Off Pressure	-	-	4351 psi
Air Conditioning System
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	• 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 c	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 con
Axles
Front	Fixed	Fixed	Fixed
Rear	Trunnion	Trunnion	Trunnion
Oscillation Angle	13 °	8.5°	13°
Brakes
Brakes	ISO 3450:2011	ISO 3450: 2011	ISO 3450:2011
Operator's 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
Sound Performance - Tier 4 Final / Stage V
Operator Sound Pressure Level (ISO 6396:2008)	73 dB(A)	72 dB(A)	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)	111 dB(A)	116 dB(A)	109 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*	72 dB(A)	72 dB(A)	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)**	109 dB(A)	-	109 dB(A)
Note (1)	* For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives.”	*Sound suppression equipped	* 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.	The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.	** 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.	The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.	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.	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.	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.	-	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.
Machine Sound Power Level (ISO 6395:2008)*	-	114 dB(A)	-
Sound Performance - Tier 3 / Stage IIIA
Operator Sound Pressure Level (ISO 6396:2008)	73 dB(A)	-	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)	112 dB(A)	-	110 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*	72 dB(A)	-	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)**	110 dB(A)	-	110 dB(A)
Note (1)	* For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives.”	-	* 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.	-	** 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.	-	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.	-	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.	-	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.
Service Refill Capacities
Fuel Tank	188 gal (US)	281 gal (US)	147 gal (US)
Cooling System	31.7 gal (US)	54.9 gal (US)	-
Coolant (Validated by Test Cell Fill Quantities)	33 gal (US)	-	-
Crankcase	15.9 gal (US)	-	-
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage V Only)	8.7 gal (US)	-	-
Transmission	24.3 gal (US)	29.1 gal (US)	16 gal (US)
Transmission - Validated by Test Cell Fill Quantities	29 gal (US)	-	-
Differential - Final Drives - Front	49.1 gal (US)	71.6 gal (US)	49 gal (US)
Differential - Final Drives - Rear	49.1 gal (US)	68.9 gal (US)	49 gal (US)
Hydraulic System Factory Fill	125.5 gal (US)	210 gal (US)	-
Hydraulic System - Tank Only	63.4 gal (US)	-	-
Note	• All non-road Tier 4 Final/Stage V diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: – 20% biodiesel FAME (fatty acid methyl ester	Cat U.S. EPA Tier 4 Final/EU Stage V diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: • 20% biodiesel FAME (fatty acid methyl este	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%
Engine Crankcase	-	20 gal (US)	16 gal (US)
Hydraulic Tank - Implement and Hydraulic Fan	-	68.9 gal (US)	-
Hydraulic Tank - Steering and Braking	-	34.9 gal (US)	-
Cooling System - Jacket Water	-	-	30 gal (US)
Cooling Systems - Power Train	-	-	8 gal (US)
Diesel Exhaust Fluid Tank	-	-	8.7 gal (US)
Hydraulic System - Implement/Steering	-	-	126 gal (US)
Dimensions (Approximate) - Standard Lift Linkage
Ground to Top of ROPS	13.8 ft	17.2 ft	-
Ground to Top of Exhaust Stacks	14.8 ft	16.6 ft	-
Ground to Top of Hood	10.9 ft	12.7 ft	-
Rear Axle - Centerline to Bumper	10.5 ft	12.5 ft	-
Front Axle Centerline to Bucket Tip	14 ft	15.4 ft	-
Wheel Base	14.9 ft	15.1 ft	-
Maximum Overall Length	39.3 ft	42.9 ft	-
Ground to Lower Hitch Clearance	1.9 ft	2 ft	-
Clearance at Maximum Lift	11.9 ft	7.2 ft	-
B-Pin Height - Maximum Lift	18 ft	19.7 ft	-
Maximum Overall Height - Bucket Raised	24.5 ft	27.2 ft	-
Reach - Maximum Lift	6.5 ft	7.2 ft	-
Ground to Bumper Clearance	-	3.5 ft	-
Ground to Center of Front Axle	-	4.2 ft	-
Rack Back Angle at Ground Level	-	40.4°	-
Rack Back Angle at Carry	-	48.8°	-
Rack Angle at Maximum Lift	-	63.7°	-
Dump Angle at Maximum Lift	-	45°	-
Note	-	Specifications are calculated with 9.0 m3 (11.8 yd3) rock bucket and Bridgestone 45/65R39 VSDL One Star tires.	-
Dimensions (Approximate) - High Lift Linkage
Ground to Top of ROPS	13.8 ft	17.2 ft	-
Ground to Top of Exhaust Stacks	14.8 ft	16.6 ft	-
Ground to Top of Hood	10.9 ft	12.7 ft	-
Rear Axle - Centerline to Bumper	10.5 ft	12.5 ft	-
Front Axle Centerline to Bucket Tip	15.3 ft	17.8 ft	-
Wheel Base	14.9 ft	15.1 ft	-
Maximum Overall Length	40.7 ft	45.3 ft	-
Ground to Lower Hitch Clearance	1.9 ft	2 ft	-
Clearance at Maximum Lift	13.3 ft	14.8 ft	-
B-Pin Height - Maximum Lift	19.3 ft	21.2 ft	-
Maximum Overall Height - Bucket Raised	25.8 ft	28.7 ft	-
Reach - Maximum Lift	6.8 ft	8.5 ft	-
Ground to Bumper Clearance	-	3.5 ft	-
Ground to Center of Front Axle	-	4.2 ft	-
Rack Back Angle at Ground Level	-	39.9°	-
Rack Back Angle at Carry	-	49.3°	-
Rack Angle at Maximum Lift	-	60.6°	-
Dump Angle at Maximum Lift	-	51°	-
Note	-	Specifications are calculated with 9.0 m3 (11.8 yd3) rock bucket and Bridgestone 45/65R39 VSDL One Star tires.	-
Hydraulic Cycle Times
Rack Back	-	4.3 s	4.5 s
Raise	-	8.6 s	8 s
Dump	-	2.9 s	2.2 s
Lower	-	3.7 s	-
Lower Float Down	-	3.7 s	3.5 s
Total Hydraulic Cycle Time - Empty Bucket	-	13.8 s	-
Total Hydraulic Cycle Time	-	-	18.2 s
Sound Performance - Tier 2
Operator Sound Pressure Level (ISO 6396:2008)	-	72 dB(A)	-
Machine Sound Power Level (ISO 6395:2008)	-	116 dB(A)	-
Operator Sound Pressure Level (ISO 6396:2008)*	-	72 dB(A)	-
Machine Sound Power Level (ISO 6395:2008)*	-	114 dB(A)	-
Note (1)	-	*Sound suppression equipped	-
Note (2)	-	The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.	-
Note (3)	-	The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.	-
Note (4)	-	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.	-
Dimensions (Approximate) - Standard Lift
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.
Dimensions (Approximate) - High Lift
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.
Dimensions - Millyard Linkage
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 °

Compare Equipment Go Back

988 Wheel Loader

990 Wheel Loader

988 XE Wheel Loader

Engine

Operating Specifications

Transmission

Hydraulic System - Lift/Tilt

Hydraulic Cycle Time (1,400-1,860 rpm)

Hydraulic System - Steering

Air Conditioning System

Axles

Brakes

Operator's Cab

Sound Performance - Tier 4 Final / Stage V

Sound Performance - Tier 3 / Stage IIIA

Service Refill Capacities

Dimensions (Approximate) - Standard Lift Linkage

Dimensions (Approximate) - High Lift Linkage

Hydraulic Cycle Times

Sound Performance - Tier 2

Dimensions (Approximate) - Standard Lift

Dimensions (Approximate) - High Lift

Dimensions - Millyard Linkage

Earthmoving

Parts & Service

Power Systems

Technology

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