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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. The Cat 990 Wheel Loader has been a proven performer in mines, quarries and industrial applications around the world. The 990 brings all new levels of performance, safety, operator comfort and efficiency.

Cat Specs
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Engine

Gross Power - SAE J1995
766 HP
Engine Power - ISO 14396
752 HP
Rated Speed
1,800/min
Bore
5.4 in
Stroke
6 in
Displacement
1649.5 in²
Torque Rise
18
Emissions
U.S. EPA TIer 4 Final and EU Stage V emission standards or U.S. EPA Tier 2 and EU Stage II equivalent
Engine Model
C27 Cat®

Buckets

Bucket Capacities
8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³)

Transmission

Forward - 3
14.2 mile/h
Reverse - 3
15.5 mile/h
Note
Travel speeds based on Michelin 45/65R39 LD D2**L5 tires.
Transmission Type
Cat planetary power shift
Forward - 1
4.5 mile/h
Forward - 2
8.3 mile/h
Direct Drive - Forward 2
8.5 mile/h
Direct Drive - Forward 3
15.2 mile/h
Reverse - 1
4.9 mile/h
Reverse - 2
9.1 mile/h
Direct Drive - Reverse 2
9.6 mile/h
Direct Drive - Reverse 3
16.4 mile/h

Service Refill Capacities

Engine Crankcase
20 gal (US)
Differential - Final Drives - Front
71.6 gal (US)
Differential - Final Drives - Rear
68.9 gal (US)
Note
All nonroad U.S. EPA Tier 4 diesel engines are required to use only Ultra Low Sulfur Diesel (ULSD) fuels containing 15 ppm (mg/kg) sulfur or less. Biodiesel blends up to B20 (20% blend by volume) are
Fuel Tank
294.3 gal (US)
Cooling System
54.9 gal (US)
Transmission
29.1 gal (US)
Hydraulic System Factory Fill
210 gal (US)

Operating Specifications

Bucket Capacity Range
8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³)
Cat Truck Match - Standard
773-775
Cat Truck Match - High Lift
775-777

Hydraulic System - Lift/Tilt

Lift/Tilt System - Circuit
Positive flow control
Relief Valve Setting - Lift/Tilt
4786 psi
Cylinders, Double Acting - Lift, Bore and Stroke
235 mm × 1287 mm (9.3 in × 50.7 in)
Lift/Tilt System
Variable displacement piston
Pilot System
Open loop and pressure reducing

Hydraulic Cycle Times

Rack Back
4.3 s
Raise
8.2 s
Dump
2.9 s
Lower
3.7 s
Lower Float Down
3.6 s

Hydraulic System - Steering

Relief Valve Setting - Steering
5004 psi
Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Maximum Flow at 1,400 rpm
96.2 gal/min
Total Steering Angle
70°

Air Conditioning System

Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 2.7 kg of refrigerant which has a CO2 equiv

Axles

Front
Fixed
Rear
Trunnion
Oscillation Angle
8.5°

Brakes

Brakes
ISO 3450: 2011

Sound Performance - Standard

Operator Sound Level (ISO 6396:2008)
65.5 dB(A)
Machine Sound Level (ISO 6395:2008)
115 dB(A)

Sound Performance - Suppression

Operator Sound Level (ISO 6396:2008)
65.5 dB(A)
Machine Sound Level (ISO 6395:2008)
113 dB(A)