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.
Engine Model C27 Cat®
Rated Speed 1,800/min
Engine Power - ISO 14396 752 HP
Gross Power - SAE J1995 766 HP
Bore 5.4in
Displacement 1649.5in³
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®
Engine Power - ISO 14396 752HP
Gross Power - SAE J1995 766HP
Net Power - SAE J1349 - High Ambient 648HP
Net Power - SAE J1349 - Standard Ambient 699HP
Peak Torque - 1,200 rpm 2624lb/ft
Rated Speed 1,800/min
Stroke 6in
Torque Rise 18%
Direct Drive - Forward 1 Lock-up disabled
Direct Drive - Forward 2 8.5mile/h
Direct Drive - Forward 3 15.2mile/h
Direct Drive - Reverse 1 5.4mile/h
Direct Drive - Reverse 2 9.6mile/h
Direct Drive - Reverse 3 16.4mile/h
Forward - 1 4.5mile/h
Forward - 2 8.3mile/h
Forward - 3 14.2mile/h
Note Travel speeds based on Michelin 45/65R39 LD D2**L5 tires.
Reverse - 1 4.9mile/h
Reverse - 2 9.1mile/h
Reverse - 3 15.5mile/h
Transmission Type Cat planetary power shift
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 178517lb
Rated Payload - High Lift 17.5ton (US)
Rated Payload - Standard 17.5ton (US)
Cylinders, Double Acting - Lift, Bore and Stroke 235 mm × 1287 mm (9.3 in × 50.7 in)
Cylinders, Double Acting - Tilt, 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 (1) 240gal/min
Pilot System Open loop and pressure reducing
Relief Valve Setting - Lift/Tilt 4786psi
Relief Valve Setting - Main 507psi
Dump 2.9s
Lower 3.7s
Lower Float Down 3.6s
Rack Back 4.3s
Raise 8.2s
Total Hydraulic Cycle Time - Empty Bucket 13.8s
Maximum Flow at 1,400 rpm 96.2gal/min
Relief Valve Setting - Steering 5004psi
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Total Steering Angle 70°
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 equivalent of 3.861 metric tonnes (4.256 tons).
Front Fixed
Oscillation Angle 8.5°
Rear Trunnion
Brakes ISO 3450: 2011
Cooling System 54.9gal (US)
Differential - Final Drives - Front 71.6gal (US)
Differential - Final Drives - Rear 68.9gal (US)
Engine Crankcase 20gal (US)
Fuel Tank 294.3gal (US)
Hydraulic System Factory Fill 210gal (US)
Hydraulic Tank - Implement and Hydraulic Fan 68.9gal (US)
Hydraulic Tank - Steering and Braking 34.9gal (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 acceptable when blended with 15 ppm (mg/kg) sulfur or l
Transmission 29.1gal (US)
Machine Sound Level (ISO 6395:2008) 115dB(A)
Operator Sound Level (ISO 6396:2008) 65.5dB(A)
Machine Sound Level (ISO 6395:2008) 113dB(A)
Operator Sound Level (ISO 6396:2008) 65.5dB(A)
Bucket Capacities 8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³)
Standard and optional equipment may vary. Consult your Cat dealer for details.
Air conditioner and heater with automatic temperature control
Cab, sound-suppressed pressurized, protective structure (ROPS/FOPS)
12V power port for mobile phone or laptop connection
Cat Vision, rear vision camera system
Cigar lighter and ashtray
Coat hook
Electro-hydraulic tilt and lift controls (seat mounted)
Flip-up armrest
Heater and defroster
Horn, electric
Implement hydraulic lockout
Instrumentation, gauges:
– Engine coolant temperature
– Fuel level
– Ground speed
– Gear
– Hydraulic oil temperature
– Speedometer/tachometer
– Torque converter temperature
Instrumentation, warning indicators:
– Action alert system, three category
– Automatic transmission model enable status
– Brake malfunction
– Bucket float status
– Delayed engine shutdown status
– Engine idle shutdown status
– Engine malfunction
– Fuel economy mode enable status
– Hydraulic lockout
– Lockup clutch enable status
– Low fuel level
– Parking brake status
– Rimpull control enable status
– Seatbelt warning
– Secondary steering (if equipped)
– Throttle lock status
– Transmission gear
Keypad, control with indicator lights:
– Auto trans mode speed range
– Auto/manual transmission mode
– Fuel economy mode
– Implement kickout
– Lockup clutch
– Reduced rimpull
– Throttle lock
Light, dome (cab)
Lunchbox and beverage holders
Mirrors, rearview (externally mounted)
Seat, leather/cloth, air suspension, heated/cooled
Seat belt, retractable, 76 mm (3 in) wide
STIC control system with steering lock
Tinted glass
Trainer seat with lap belt
Vital Information Management System (VIMS) 3G with graphical information display: external data port, customizable operator profiles, cycle timer, and integral Cat Production Measurement
– Wet-arm wipers/washers (front, rear and corner) intermittent front wiper
Brakes, full hydraulic, enclosed, oil-disc
Axle-shaft oil-disc service brake
Electro hydraulic parking brake
Case drain screens
Cat clean emission module (Tier 4 only)
Demand fan
Engine Cat C27
Fuel priming pump (electric)
Ground level engine shutoff, bumper
Mufflers (under hood) (Tier 2 equivalent only)
Precleaner, engine air intake
Radiator, Aluminum Modular (AMR)
Separated cooling system
Starting aid, (ether) manual override
Throttle Lock
Torque Converter, Impeller Clutch with lock-up clutch feature and rimpull control system
Transmission, 534 mm (21 in) planetary power shift (electronic) (3F/3R)
Alarm, back-up
Alternator, 150 amp
Batteries, maintenance free (2 – 1,400 CCA)
Converter, 10/15 amp, 24V to 12V
Deutsch component connectors
Electrical system, 24V
Electronic transmission control
Lighting system, halogen (front and rear) lighting, access stairway, engine compartment
Starter, electric
Starter lockout in bumper
Starting receptacle for emergency start
Transmission lockout in bumper
Automatic bucket tilt/lift kickouts electronically adjustable from cab
Axle temperature sensor
Battery disconnect and jump start receptacle, bumper
Coupling, Caterpillar O-ring face seals
Economy mode with on demand throttle
Emergency platform egress
Engine, crankcase, 500 hour interval with CH4
Engine idle management features:
– Auto idle kickdown
– Delayed engine shutdown
– Engine idle shutdown
Fenders, steel (front)
Guards, crankcase and power train
Grouped/labeled lube points
Hitch, drawbar with pin
Hoses, Cat XT™
Oil sampling valves
Positive flow control hydraulic system
Product Link
Sight Gauges: hydraulic tanks, steering/fan and implement/brake, and transmission
Stairway, left and right rear access
Steering, load sensing
Toe kicks
Vandalism protection caplocks
Venturi stack
Premixed 50% concentration of extended life coolant with freeze protection to –34° C (–29° F)
Standard and optional equipment may vary. Consult your Cat dealer for details.
–50° C (–58° F) antifreeze
Engine oil change system, high speed, Wiggins
Engine block heater 120V or 240V
High ambient cooling – software
Cab precleaner, powered
AM/FM/CD/MP3 radio
Satellite Sirius radio with Bluetooth
LED warning strobe
CB radio ready
Window sun shade
Front and rear roading fenders
Fast fill fuel system (Shaw-Aero)
Axle oscillation stop
Heavy duty cab mounts
