988 Large Wheel Loader | Cat

Engine

Engine Power - ISO 14396:2002	580 hp 432 kW
Engine Model	Cat® C18 Cat® C18
Rated Speed	1700/rpm 1700/rpm
Peak Power Speed	1500/rpm 1500/rpm
Gross Power - SAE J1995:2014	588 hp 439 kW
Net Power - SAE J1349:2011	538 hp 401 kW
Bore	5.7 in 145 mm
Stroke	7.2 in 183 mm
Displacement	1105 in³ 18.1 l
Peak Torque - 1,200 rpm	2104 lbf·ft 2852 N·m
Torque Rise	58 % 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 emission standards. 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 emission standards.
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.

Operating Specifications

Operating Weight	112574 lb 51062 kg
Bucket Capacity Range	4.7-13 m3 (6.2-17 yd3) 4.7-13 m3 (6.2-17 yd3)
Rated Payload - Quarry Face	12.5 t 11.3 t
Rated Payload - Loose Material	16 t 14.5 t
Cat Truck Match - Standard	770 - 772 770 - 772
Cat Truck Match - High Lift	773 - 775 773 - 775

Transmission

Transmission Type	Cat planetary powershift Cat planetary powershift
Forward - 1	4 mile/h 6.5 km/h
Forward - 2	7.2 mile/h 11.6 km/h
Forward - 3	12.7 mile/h 20.4 km/h
Forward - 4	21.6 mile/h 34.7 km/h
Reverse - 1	4.7 mile/h 7.5 km/h
Reverse - 2	8.3 mile/h 13.3 km/h
Reverse - 3	14.4 mile/h 23.2 km/h
Direct Drive - Forward 1	Lock-up disabled Lock-up disabled
Direct Drive - Forward 2	7.8 mile/h 12.5 km/h
Direct Drive - Forward 3	13.9 mile/h 22.3 km/h
Direct Drive - Forward 4	24.4 mile/h 39.3 km/h
Direct Drive - Reverse 1	5 mile/h 8 km/h
Direct Drive - Reverse 2	8.9 mile/h 14.3 km/h
Direct Drive - Reverse 3	15.8 mile/h 25.5 km/h

Hydraulic System - Lift/Tilt

Lift/Tilt System - Circuit	EH- Positive Flow Control, Flow Sharing 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 gal/min 580 l/min
Relief Valve Setting - Lift/Tilt	4757 psi 32800 kPa
Cylinders, Double Acting - Lift, Bore and Stroke	210 mm × 1050 mm (8.7 in × 41.3 in) 210 mm × 1050 mm (8.7 in × 41.3 in)
Cylinders, Double Acting - Tilt, Bore and Stroke	266 mm × 685 mm (8.7 in × 27 in) 266 mm × 685 mm (8.7 in × 27 in)
Pilot System	Variable displacement piston Variable displacement piston
Relief Valve Setting - Main	551 psi 3800 kPa

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

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

Hydraulic System - Steering

Steering System - Circuit	Pilot, load sensing Pilot, load sensing
Steering System - Pump	Piston, variable displacement Piston, variable displacement
Maximum Flow at 1,400-1,600 rpm	71.3 gal/min 270 l/min
Relief Valve Setting - Steering	4351 psi 30000 kPa
Total Steering Angle	86 ° 86 °
Steering Cycle Times - High Idle	3.4 s 3.4 s
Steering Cycle Times - Low Idle	5.6 s 5.6 s

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 contains 1.8 kg (3.9 lb) of refrigerant which has a CO2 equivalent of 2.574 metric tonnes (2.837 tons). • 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).

Axles

Front	Fixed Fixed
Rear	Trunnion Trunnion
Oscillation Angle	13 ° 13 °

Brakes

Brakes

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) 73 dB(A)
Machine Sound Power Level (ISO 6395:2008)	111 dB(A) 111 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*	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.” * 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.

Sound Performance - Tier 3 / Stage IIIA

Operator Sound Pressure Level (ISO 6396:2008)	73 dB(A) 73 dB(A)
Machine Sound Power Level (ISO 6395:2008)	112 dB(A) 112 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) 712 l
Cooling System	31.7 gal (US) 120 l
Coolant (Validated by Test Cell Fill Quantities)	33 gal (US) 125 l
Crankcase	15.9 gal (US) 60 l
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage V Only)	8.7 gal (US) 33 l
Transmission	24.3 gal (US) 92 l
Transmission - Validated by Test Cell Fill Quantities	29 gal (US) 110 l
Differential - Final Drives - Front	49.1 gal (US) 186 l
Differential - Final Drives - Rear	49.1 gal (US) 186 l
Hydraulic System Factory Fill	125.5 gal (US) 475 l
Hydraulic System - Tank Only	63.4 gal (US) 240 l
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)* – 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. • 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). • For pre-Tier 4 engines: Cat engines 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. * For use of blends higher than 20% biodiesel, consult your Cat dealer. Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. • 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)* – 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. • 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). • For pre-Tier 4 engines: Cat engines 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. * For use of blends higher than 20% biodiesel, consult your Cat dealer. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.

Dimensions (Approximate) - Standard Lift Linkage

Ground to Top of ROPS	13.8 ft 4202 mm
Ground to Top of Exhaust Stacks	14.8 ft 4521 mm
Ground to Top of Hood	10.9 ft 3334 mm
Rear Axle - Centerline to Bumper	10.5 ft 3187 mm
Front Axle Centerline to Bucket Tip	14 ft 4254 mm
Wheel Base	14.9 ft 4550 mm
Maximum Overall Length	39.3 ft 11991 mm
Ground to Lower Hitch Clearance	1.9 ft 568 mm
Clearance at Maximum Lift	11.9 ft 3641 mm
B-Pin Height - Maximum Lift	18 ft 5485 mm
Maximum Overall Height - Bucket Raised	24.5 ft 7455 mm
Reach - Maximum Lift	6.5 ft 1981 mm

Dimensions (Approximate) - High Lift Linkage

Ground to Top of ROPS	13.8 ft 4202 mm
Ground to Top of Exhaust Stacks	14.8 ft 4521 mm
Ground to Top of Hood	10.9 ft 3334 mm
Rear Axle - Centerline to Bumper	10.5 ft 3187 mm
Front Axle Centerline to Bucket Tip	15.3 ft 4661 mm
Wheel Base	14.9 ft 4550 mm
Maximum Overall Length	40.7 ft 12398 mm
Ground to Lower Hitch Clearance	1.9 ft 568 mm
Clearance at Maximum Lift	13.3 ft 4043 mm
B-Pin Height - Maximum Lift	19.3 ft 5887 mm
Maximum Overall Height - Bucket Raised	25.8 ft 7849 mm
Reach - Maximum Lift	6.8 ft 2062 mm