Caterpillar 988K Steel Mill Arrangement Large Wheel Loaders

Specifications of Caterpillar 988K Steel Mill Arrangement Large Wheel Loaders

Engine

• Bore 145.0 mm
• Displacement 18.1 L
• Emissions U.S. EPA Tier 4 Final/EU Stage IV, Tier 2 Equivalent
• Engine Model Cat® C18 ACERT™
• Gross (ISO 14396) 432.0 kW
• Net Power 403.0 kW
• Net Power - SAE J1349 403.0 kW
• Peak Power Speed 1,500 rpm
• Peak Power Speed @ 1,500 rpm: Gross - ISO 14396 432.0 kW
• Peak Power Speed @ 1,500 rpm: Gross - SAE J1995 439.0 kW
• Peak Power Speed @ 1,500 rpm: Net Power - SAE J1349 403.0 kW
• Peak Torque @ 1,200 rpm 2852.0 N·m
• Rated Speed 1,700 rpm
• Stroke 183.0 mm
• Torque Rise 58.0 %

Transmission

• Direct Drive - Forward 1 Lock-up disabled
• Direct Drive - Forward 2 12.5 km/h
• Direct Drive - Forward 3 22.3 km/h
• Direct Drive - Forward 4 39.3 km/h
• Direct Drive - Reverse 1 8.0 km/h
• Direct Drive - Reverse 2 14.3 km/h
• Direct Drive - Reverse 3 25.5 km/h
• Forward 1 6.5 km/h
• Forward 2 11.6 km/h
• Forward 3 20.4 km/h
• Forward 4 34.7 km/h
• Reverse 1 7.5 km/h
• Reverse 2 13.3 km/h
• Reverse 3 23.2 km/h

Service Refill Capacities

• Cooling System 120.0 L
• Crankcase 60.0 L
• Diesel Exhaust Fluid Tank (Tier 4) 33.0 L
• Differentials and Final Drives - Front 186.0 L
• Differentials and Final Drives - Rear 186.0 L
• Fuel Tank 712.0 L
• Hydraulic System (tank only) 240.0 L
• Hydraulic System Factory Fill 475.0 L
• Transmission 120.0 L

Operating Specifications

• Bucket Capacity Range 6.4-7.6 m3 (8.3-10 yd3)
• Cat Truck Match - High Lift 773-775
• Cat Truck Match - Standard 770-772
• Operating Weight 51062.0 kg
• Rated Payload 11.3 tonnes
• Rated Payload - High Lift 11.3 tonnes
• Rated Payload - Standard 11.3 tonnes

Axles

• Front Fixed
• Oscillation Angle 13°
• Rear Trunnion

Brakes

• Brakes SAE J1473 OCT90, ISO 3450:1992

Buckets

• Bucket Capacities 6.4-7.6 m3 (8.3-10 yd3)

HYDRAULIC SYSTEM - LIFT/TILT

• Cylinders, Double Acting: Lift, Bore and Stroke 220 mm × 911 mm (8.7 in × 35.9 in)
• Cylinders, Double Acting: Tilt, Bore and Stroke 220 mm × 1621 mm (8.7 in × 63.8 in)
• Lift/Tilt System Variable displacement piston
• Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing
• Maximum Flow 52.0 L/min
• Maximum Flow at 1,400-1,860 rpm 580.0 L/min
• Pilot System Variable displacement piston
• Relief Valve Setting 4000.0 kPa
• Relief Valve Setting - Lift/Tilt 32000.0 kPa

HYDRAULIC SYSTEM - STEERING

• Maximum Flow 270.0 L/min
• Relief Valve Setting - Steering 30000.0 kPa
• Steering Cycle Time (high idle) 3.4 Seconds
• Steering Cycle Time (low idle) 5.6 Seconds
• Steering System - Circuit Pilot, load sensing
• Steering System - Pump Piston, variable displacement
• Total Steering Angle 86.0 Degrees

SOUND PERFORMANCE - STANDARD

• Machine Sound Level (ISO 6395) 111.0 dB(A)
• Operator Sound Level (ISO 6396) 71.0 dB(A)

SOUND PERFORMANCE - SUPPRESSION

• Machine Sound Level (ISO 6395) 109.0 dB(A)
• Operator Sound Level (ISO 6396) 70.0 dB(A)

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

• Dump 2.2 Seconds
• Lower Float Down 3.5 Seconds
• Rackback 4.5 Seconds
• Raise 8.0 Seconds
• Total Hydraulic Cycle Time (empty bucket) 18.2 Seconds