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    988 GC Wheel Loader
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    Engine
    Engine Model Cat® C15 C27 Cat® Cat® 3516E
    Rated Speed 2000 1,800/min -
    Peak Power Speed 1600 - -
    Engine Power - ISO 14396 449 HP 752 HP 1847 HP
    Gross Power - SAE J1995 456 HP 766 HP 1870 HP
    Net Power - SAE J1349 373 HP - -
    Emissions U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 U.S. EPA TIer 4 Final and EU Stage V emission standards or U.S. EPA Tier 2 and EU Stage II equivalent U.S. EPA Tier 4 Final/EU Stage V or U.S. EPA Tier 1 equivalent
    Bore 5.4 in 5.4 in 6.7 in
    Stroke 6.75 in 6 in 8.5 in
    Displacement 927 in³ 1649.5 in³ 4766 in³
    Peak Torque - 1,200 rpm - SAE J1995 1778 ft·lbf - 8549 lb/ft
    Torque Rise 16% 18 % 39%
    Net Power - SAE J1349 - Standard Ambient - 699 HP 1739 HP
    Net Power - SAE J1349 - High Ambient - 648 HP 1696 HP
    Peak Torque - 1,200 rpm - 2624 lb/ft -
    Note (1) - - The power ratings apply when tested under the reference conditions for the specified standard.
    Note (2) - - The net power advertised is the power available at the flywheel when the engine is equipped with fan, alternator, air cleaner and muffler.
    Note (3) - - The gross power advertised is with the fan at maximum speed.

    Operating Specifications
    Operating Weight 116858 lb 178517 lb -
    Rated Payload - Quarry Face 12.5 ton (US) - -
    Bucket Capacity Range 6.4-7.6 m3 (8.3-10 yd3) 8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³) 17.2-43.6 m3 (22.3-57 yd3)
    Cat Truck Match - High Lift 772/773/775 775-777 789/793/794
    Rated Payload - Standard - 17.5 ton (US) -
    Rated Payload - High Lift - 17.5 ton (US) -
    Cat Truck Match - Standard - 773-775 785/789
    Operating Weight - Standard - - 543772 lb
    Operating Weight - High Lift - - 547675 lb
    Rated Payload - Standard Lift (Low to Moderate Digging Resistance) - - 60 ton (US)
    Rated Payload - Standard Lift (Moderate to High Digging Resistance) - - 50 ton (US)
    Rated Payload - High Lift (Low to Moderate Digging Resistance) - - 55 ton (US)
    Rated Payload - High Lift (Moderate to High Digging Resistance) - - 50 ton (US)
    Note - - *Please contact your local dealer to determine if your application is suitable for this increased rated payload.

    Transmission
    Transmission Type Cat planetary power shift Cat planetary power shift Cat Planetary Power Shift
    Forward - 1 5 mile/h 4.5 mile/h 4.6 mile/h
    Forward - 2 8 mile/h 8.3 mile/h 8 mile/h
    Reverse - 1 5 mile/h 4.9 mile/h 5 mile/h
    Reverse - 2 8 mile/h 9.1 mile/h 8.8 mile/h
    Direct Drive - Forward 1 Lock-up disabled Lock-up disabled Lock-up disables
    Direct Drive - Forward 2 8 mile/h 8.5 mile/h 8.7 mile/h
    Direct Drive - Forward 3 14 mile/h 15.2 mile/h 15.2 mile/h
    Direct Drive - Forward 4 24 mile/h - -
    Direct Drive - Reverse 1 Lock-up disabled 5.4 mile/h Lock-up disables
    Direct Drive - Reverse 2 9 mile/h 9.6 mile/h 9.6 mile/h
    Direct Drive - Reverse 3 16 mile/h 16.4 mile/h 16.8 mile/h
    Direct Drive - Reverse 4 25.4 mile/h - -
    Forward - 3 - 14.2 mile/h 13.6 mile/h
    Reverse - 3 - 15.5 mile/h 14.9 mile/h
    Note - Travel speeds based on Michelin 45/65R39 LD D2**L5 tires. Travel speeds based on 58/85-57 tires.

    Hydraulic System - Lift/Tilt
    Lift/Tilt System - Circuit EH - Load Sense Positive flow control Positive Flow Control
    Lift/Tilt System 2X x 145 cc Variable displacement piston Variable displacement piston -
    Maximum Flow at 2,165 rpm 159 gal/min - -
    Relief Valve Setting - Lift/Tilt 4598 psi 4786 psi 5004 psi
    Cylinders, Double Acting - Lift, Bore and Stroke 190 mm x 1216 mm (7.5 in x 48 in) 235 mm × 1287 mm (9.3 in × 50.7 in) 370 × 1713 mm (14.6 × 67.4 in)
    Cylinders, Double Acting - Tilt, Bore and Stroke 170 mm x 722 mm (6.7 in x 28.4 in) 292.1 mm × 820 mm (11.5 in × 32.3 in) 310 × 1086 mm (12.2 × 42.8 in)
    Pilot System Variable displacement piston Open loop and pressure reducing Open Loop and Pressure Reducing
    Tilt Cylinder - Stroke 27 in - -
    Maximum Flow at 1,800 rpm (1) - 240 gal/min -
    Relief Valve Setting - Main - 507 psi -
    Lift/Tilt System - Pump - - Variable Displacement Piston
    Maximum Flow at 1,700 rpm Engine Speed - - 541 gal/min

    Hydraulic Cycle Times
    Rack Back 3.8 s 4.3 s 4.9 s
    Raise 7.5 s 8.2 s 12.6 s
    Dump 3 s 2.9 s 3.1 s
    Lower Float Down 4.6 s 3.6 s 4.2 s
    Total Hydraulic Cycle Time - Empty Bucket 18.9 s 13.8 s -
    Lower - 3.7 s -

    Hydraulic System - Steering
    Steering System - Circuit Pilot, load sensing Pilot, load sensing Pilot, Load Sensing
    Steering System - Pump Piston, variable displacement Piston, variable displacement Piston, Variable Displacement
    Maximum Flow 52 gal (US) - -
    Relief Valve Setting - Steering 4000 psi 5004 psi -
    Total Steering Angle 70° 70° 80 degrees
    Steering Cycle Times - High Idle 3 s - 4.3 s
    Steering Cycle Times - Low Idle 5.2 s - 7.6 s
    Maximum Flow at 1,400 rpm - 96.2 gal/min -

    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. 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). -

    Axles
    Front Fixed Fixed Fixed
    Rear Trunnion Trunnion Trunnion
    Oscillation Angle +/-12.5° 8.5° 9°

    Brakes
    Brakes ISO 3450:2011 ISO 3450: 2011 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 141 gal (US) 294.3 gal (US) -
    Cooling System 27 gal (US) 54.9 gal (US) -
    Engine Crankcase 9 gal (US) 20 gal (US) -
    Diesel Exhaust Fluid Tank 5.5 gal (US) - -
    Transmission 20 gal (US) 29.1 gal (US) -
    Differential - Final Drives - Front 49 gal (US) 71.6 gal (US) -
    Differential - Final Drives - Rear 45 gal (US) 68.9 gal (US) -
    Note Cat U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: - 20% biodiesel FAME (fatty a 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 -
    Hydraulic System Factory Fill - 210 gal (US) -
    Hydraulic Tank - Implement and Hydraulic Fan - 68.9 gal (US) -
    Hydraulic Tank - Steering and Braking - 34.9 gal (US) -

    Sound Performance - Tier 4 Final/EU Stage V - Standard
    Operator Sound Level (ISO 6396) 72 dB(A) - -
    Machine Sound Level (ISO 6395) 110 dB(A) - -
    Note (1) The operator sound pressure level was measured according to the test procedures and conditions specified in ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed. - -
    Note (2) Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment. - -
    Note (3) The machine sound power level was measured according to the test procedures and conditions specified in ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed. - -

    Dimensions (Approximate) - High Lift
    Ground to Top of ROPS 13.5 ft - -
    Ground to Top of Exhaust Stacks 13.3 ft - -
    Ground to Top of Hood 10.7 ft - -
    Rear Axle - Centerline to Bumper 10.3 ft - -
    Front Axle Centerline to Bucket Tip 15.7 ft - -
    Wheel Base 12.5 ft - -
    Maximum Overall Length 39.5 ft - -
    Ground to Lower Hitch Clearance 1.5 ft - -
    Clearance at Maximum Lift 12 ft - -
    B-Pin Height - Maximum Lift 18.7 ft - -
    Maximum Overall Height - Bucket Raised 25 ft - -
    Reach - Maximum Lift 7.7 ft - -
    Note Specifications are calculated with 6.9 m3 (9.0 yd3 ) rock bucket equipped with Michelin XLDD1 35/65 R33 tires. - -

    Buckets
    Bucket Capacities 6.4-7.6 m3 (8.3-10 yd3) 8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³) -

    Sustainability
    Recyclability 96% - -

    Sound Performance - Standard
    Operator Sound Level (ISO 6396:2008) - 65.5 dB(A) -
    Machine Sound Level (ISO 6395:2008) - 115 dB(A) 119 dB(A)
    Operator Sound Level (ISO 6396:2008) - Tier 1/EU Stage I Equivalent - - 74 dB(A)
    Note - - The declared sound levels listed above include the addition of both measurement uncertainty and uncertainty due to production variation. Typical measurement uncertainty for this type of machine is 2 dBA in accordance with "ISO 4871". The measurement was c

    Sound Performance - Suppression
    Operator Sound Level (ISO 6396:2008) - 65.5 dB(A) -
    Machine Sound Level (ISO 6395:2008) - 113 dB(A) 117 dB(A)
    Operator Sound Level (ISO 6396:2008) - Tier 1/EU Stage I Equivalent - - 73 dB(A)
    Note - - The declared sound levels listed above include the addition of both measurement uncertainty and uncertainty due to production variation. Typical measurement uncertainty for this type of machine is 2 dBA in accordance with "ISO 4871". The measurement was c

    Complete System Fill
    Fuel Tank - Standard - - 856 gal (US)
    Fuel Tank - With 24 hr Attachment - - 1414 gal (US)
    Cooling System - - 138 gal (US)
    Engine Crankcase - - 76 gal (US)
    Transmission - - 110 gal (US)
    Differential - Final Drives - Front - - 220 gal (US)
    Differential - Final Drives - Rear - - 200 gal (US)
    Hydraulic Tank - Implement and Hydraulic Fan - - 270 gal (US)
    Hydraulic Tank - Steering and Braking - - 100 gal (US)
    Oil Renewal System (ORS)* - - 20 gal (US)
    Note - - *Not available on Tier 4 Final/Stage V machines. Not available in all regions.

    Cooling System
    Ambient Capability Hydraulically Driven Demand Fan - Standard - - 109.4 °F
    Ambient Capability Hydraulically Driven Demand Fan - High (Tier 1 equivalent) - - 131 °F
    Ambient Capability Hydraulically Driven Demand Fan - High (Tier 4 Final) - - 127.4 °F

    Dimensions - Standard Lift - Approximate
    B-Pin Height - Maximum Lift - - 28.8 ft
    Clearance at Maximum Lift - - 19.8 ft
    Dump Angle at Maximum Lift - - –50.0 degrees
    Front Axle Centerline to Bucket Tip - - 21.9 ft
    Ground to Bumper Clearance - - 4.4 ft
    Ground to Center of Axles - - 6 ft
    Ground to Lower Hitch Clearance - - 2.9 ft
    Ground to Top of Exhaust Stacks - - 23.2 ft
    Ground to Top of Hood - - 18.6 ft
    Ground to Top of ROPS - - 23.4 ft
    Maximum Overall Height - Bucket Raised - - 39.3 ft
    Maximum Overall Length - - 64.6 ft
    Note - - Assumes loaded 58/85-57 tires, tires at a static loaded radius of 1830 mm (6 ft), 596-5330 26 m3 (34 yd3) bucket, 431-0064 HD tips.
    Rack Angle at Maximum Lift - - 59.5 degrees
    Rack Back Angle - Carry - - 47.7 degrees
    Rack Back Angle - Ground Level - - 39.7 degrees
    Reach - Maximum Lift - - 9.6 ft
    Rear Axle - Centerline to Bumper - - 20.4 ft
    Tread Width - - 14.1 ft
    Wheel Base - - 22.3 ft
    Width - Over Tires - With Bulge - - 18.8 ft

    Dimensions - High Lift - Approximate
    B-Pin Height - Maximum Lift - - 31.6 ft
    Clearance at Maximum Lift - - 22.6 ft
    Dump Angle at Maximum Lift - - –50.0 degrees
    Front Axle Centerline to Bucket Tip - - 24.2 ft
    Ground to Bumper Clearance - - 4.4 ft
    Ground to Center of Axles - - 6 ft
    Ground to Lower Hitch Clearance - - 2.9 ft
    Ground to Top of Exhaust Stacks - - 23.2 ft
    Ground to Top of Hood - - 18.6 ft
    Ground to Top of ROPS - - 23.4 ft
    Maximum Overall Height - Bucket Raised - - 42.1 ft
    Maximum Overall Length - - 66.9 ft
    Note - - Assumes loaded 58/85-57 tires, tires at a static loaded radius of 1830 mm (6 ft), 596-5330 26 m3 (34 yd3) bucket, 431-0064 HD tips.
    Rack Angle at Maximum Lift - - 59.4 degrees
    Rack Back Angle - Carry - - 53.5 degrees
    Rack Back Angle - Ground Level - - 45 degrees
    Reach - Maximum Lift - - 9.4 ft
    Rear Axle - Centerline to Bumper - - 20.4 ft
    Tread Width - - 14.1 ft
    Wheel Base - - 22.3 ft
    Width - Over Tires - With Bulge - - 18.8 ft
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