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    988 Wheel Loader
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    Engine
    Net Power - SAE J1349:2011 538 HP - -
    Engine Power - ISO 14396:2002 580 HP - -
    Gross Power - SAE J1995:2014 588 HP - -
    Engine Model Cat® C18 ™ - -
    Rated Speed 1700/min - -
    Peak Power Speed 1500/rpm - -
    Emissions U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards, Brazil MAR-1 and China Nonroad Stage IV emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA, and U.S. EPA Tier 2 and EU Stage II - -
    Bore 5.7 in - -
    Stroke 7.2 in - -
    Displacement 1105 in³ - -
    Peak Torque - 1,200 rpm 2230 lb/ft - -
    Torque Rise 58 % - -

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

    Transmission
    Transmission Type Cat planetary powershift - -
    Forward - 1 4 mile/h - -
    Forward - 2 7.2 mile/h - -
    Forward - 3 12.7 mile/h - -
    Forward - 4 21.6 mile/h - -
    Reverse - 1 4.7 mile/h - -
    Reverse - 2 8.3 mile/h - -
    Reverse - 3 14.4 mile/h - -
    Direct Drive - Forward 1 Lock-up disabled - -
    Direct Drive - Forward 2 7.8 mile/h - -
    Direct Drive - Forward 3 13.9 mile/h - -
    Direct Drive - Forward 4 24.4 mile/h - -
    Direct Drive - Reverse 1 5 mile/h - -
    Direct Drive - Reverse 2 8.9 mile/h - -
    Direct Drive - Reverse 3 15.8 mile/h - -

    Hydraulic System - Lift/Tilt
    Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing - -
    Lift/Tilt System Variable displacement piston - -
    Maximum Flow at 1,400-1,860 rpm 153 gal/min - -
    Relief Valve Setting - Lift/Tilt 4757 psi - -
    Cylinders, Double Acting - Lift, Bore and Stroke 210 mm × 1050 mm (8.7 in × 41.3 in) - -
    Cylinders, Double Acting - Tilt, Bore and Stroke 269 mm × 685 mm (8.7 in × 27 in) - -
    Pilot System Variable displacement piston - -
    Relief Valve Setting - Main 551 psi - -

    Hydraulic Cycle Time (1,400-1,860 rpm)
    Rack Back 4.5 s - -
    Raise 8 s - -
    Dump 2.2 s - -
    Lower Float Down 3.5 s - -
    Total Hydraulic Cycle Time - Empty Bucket 18.2 s - -

    Hydraulic System - Steering
    Steering System - Circuit Pilot, load sensing - -
    Steering System - Pump Piston, variable displacement - -
    Maximum Flow 71.3 gal/min - -
    Relief Valve Setting - Steering 4351 psi - -
    Total Steering Angle 86 ° - -
    Steering Cycle Times - High Idle 3.4 s - -
    Steering Cycle Times - Low Idle 5.6 s - -

    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 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes. - -

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

    Brakes
    Brakes ISO 3450:2011 - -

    Operator's Cab
    ROPS/FOPS ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards - -

    Service Refill Capacities
    Fuel Tank 188 gal (US) - -
    Cooling System 31.7 gal (US) - -
    Coolant (Validated by Test Cell Fill Quantities) 33 gal (US) - -
    Crankcase 15.9 gal (US) - -
    Diesel Exhaust Fluid Tank 8.7 gal (US) - -
    Transmission 31.7 gal (US) - -
    Transmission - Validated by Test Cell Fill Quantities 29 gal (US) - -
    Differential - Final Drives - Front 49.1 gal (US) - -
    Differential - Final Drives - Rear 49.1 gal (US) - -
    Hydraulic System Factory Fill 125.5 gal (US) - -
    Hydraulic System - Tank Only 63.4 gal (US) - -

    Sound Performance - Tier 4 Final / Stage V - Standard
    Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A) - -
    Machine Sound Power Level (ISO 6395:2008) 111 dB(A) - -

    Sound Performance - Tier 3 / Stage III - Standard
    Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A) - -
    Machine Sound Power Level (ISO 6395:2008) 112 dB(A) - -

    Dimensions (Approximate) - Standard Lift Linkage
    Ground to Top of ROPS 13.8 ft - -
    Ground to Top of Exhaust Stacks 14.8 ft - -
    Ground to Top of Hood 10.9 ft - -
    Rear Axle - Centerline to Bumper 10.5 ft - -
    Front Axle Centerline to Bucket Tip 14 ft - -
    Wheel Base 14.9 ft - -
    Maximum Overall Length 39.3 ft - -
    Ground to Lower Hitch Clearance 1.9 ft - -
    Clearance at Maximum Lift 11.9 ft - -
    B-Pin Height - Maximum Lift 18 ft - -
    Maximum Overall Height - Bucket Raised 24.5 ft - -
    Reach - Maximum Lift 6.5 ft - -

    Dimensions (Approximate) - High Lift Linkage
    Ground to Top of ROPS 13.8 ft - -
    Ground to Top of Exhaust Stacks 14.8 ft - -
    Ground to Top of Hood 10.9 ft - -
    Rear Axle - Centerline to Bumper 10.5 ft - -
    Front Axle Centerline to Bucket Tip 15.3 ft - -
    Wheel Base 14.9 ft - -
    Maximum Overall Length 40.7 ft - -
    Ground to Lower Hitch Clearance 1.9 ft - -
    Clearance at Maximum Lift 13.3 ft - -
    B-Pin Height - Maximum Lift 19.3 ft - -
    Maximum Overall Height - Bucket Raised 25.8 ft - -
    Reach - Maximum Lift 6.8 ft - -

    Buckets
    Bucket Capacities 4.7-13 m3 (6.2-17 yd3) - -
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