Caterpillar 990K Large Wheel Loaders

Specifications of Caterpillar 990K Large Wheel Loaders

Engine

• Bore 137.2 mm
• Displacement 27.03 L
• Emissions U.S. EPA Tier 4 Final, Tier 2 Equivalent
• Engine Model Cat® C27 ACERT™
• Gross (ISO 14396) 561.0 kW
• Net Power 521.0 kW
• Net Power - SAE J1349 521.0 kW
• Peak Torque @ 1,200 rpm 3557.0 N·m
• Rated Speed 1,800 rpm
• Rated Speed - Gross (ISO 14396) 561.0 kW
• Rated Speed - Gross (SAE J1995) 571.0 kW
• Rated Speed - Net Power - SAE J1349 (High Ambient) 483.0 kW
• Rated Speed - Net Power - SAE J1349 (Standard Ambient) 521.0 kW
• Stroke 152.4 mm
• Torque Rise 18.0 %

Transmission

• Direct Drive - Forward 1 Lock-up disabled
• Direct Drive - Forward 2 13.7 km/h
• Direct Drive - Forward 3 24.5 km/h
• Direct Drive - Reverse 1 8.7 km/h
• Direct Drive - Reverse 2 15.4 km/h
• Direct Drive – Reverse 3 26.4 km/h
• Forward 1 7.3 km/h
• Forward 2 13.3 km/h
• Forward 3 22.9 km/h
• Reverse 1 7.9 km/h
• Reverse 2 14.7 km/h
• Reverse 3 24.9 km/h
• Transmission Type Cat planetary power shift

Service Refill Capacities

• Cooling System 208.0 L
• Differentials and Final Drives - Front 271.0 L
• Differentials and Final Drives - Rear 261.0 L
• Engine Crankcase 75.7 L
• Fuel Tank 1114.0 L
• Hydraulic System Factory Fill 795.0 L
• Hydraulic Tank (Implement and Hydraulic Fan) 261.0 L
• Hydraulic Tank (Steering and Braking) 132.0 L
• Transmission 110.0 L

Operating Specifications

• Bucket Capacity Range 8.6 m3-10.0 m3 (11.25 yd3-13.0 yd3)
• Cat Truck Match - High Lift 775-777
• Cat Truck Match - Standard 773-775
• Operating Weight 80974.0 kg
• Rated Payload 15.88 tonnes
• Rated Payload - High Lift 15.88 tonnes
• Rated Payload - Standard 15.88 tonnes

Axles

• Front Fixed
• Oscillation Angle 8.5°
• Rear Trunnion

Brakes

• Brakes SAE J1473 OCT90, ISO 3450:1992

Buckets

• Bucket Capacities 8.6-10.0 m3 (11.25-13.0 yd3)

HYDRAULIC SYSTEM - LIFT/TILT

• Cylinders, Double Acting: Left and Right Tilt, Bore and Stroke 235 mm × 1287 mm (9.3 in × 50.7 in)
• Cylinders, Double Acting: Lift, Bore and Stroke 292.1 mm × 820 mm (11.5 in × 32.3 in)
• Lift/Tilt System Variable displacement piston
• Lift/Tilt System - Circuit Positive flow control
• Maximum Flow at 1,800 rpm 817.0 L/min
• Pilot System Open loop and pressure reducing
• Relief Valve Setting 3500.0 kPa
• Relief Valve Setting - Lift/Tilt 33000.0 kPa

HYDRAULIC SYSTEM - STEERING

• Maximum Flow @ 1,400 rpm 358.0 L/min
• Relief Valve Setting - Steering 32000.0 kPa
• Steering System - Circuit Pilot, load sensing
• Steering System - Pump Piston, variable displacement
• Total Steering Angle 70.0 Degrees

SOUND PERFORMANCE - STANDARD

• Machine Sound Level (ISO 6395:2008) 115.0 dB(A)
• Operator Sound Level (ISO 6396:2008) 69.0 dB(A)

SOUND PERFORMANCE - SUPPRESSION

• Machine Sound Level (ISO 6395:2008) 113.0 dB(A)
• Operator Sound Level (ISO 6396:2008) 69.0 dB(A)

Hydraulic Cycle Time

• Dump 2.9 Seconds
• Lower 3.7 Seconds
• Lower Float Down 3.6 Seconds
• Rackback 4.3 Seconds
• Raise 8.2 Seconds
• Total Hydraulic Cycle Time (empty bucket) 13.8 Seconds