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    988 Wheel Loader
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    950 GC Wheel Loader | Front Loader
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    Engine
    Engine Power - ISO 14396:2002 580 hp - -
    Engine Model Cat® C18 Cat® C32B Cat C7.1
    Rated Speed 1700/rpm 1750 rpm -
    Peak Power Speed 1500/rpm - -
    Gross Power - SAE J1995:2014 588 hp - -
    Net Power - SAE J1349:2011 538 hp - -
    Bore 5.7 in 5.7 in 4.13 in
    Stroke 7.2 in 6.4 in 5.31 in
    Displacement 1105 in³ 1963.5 in³ 428 in³
    Peak Torque - 1,200 rpm 2104 lbf·ft - -
    Torque Rise 58 % - -
    Note (1) Three engine emission options are available: 1. Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards. 2. Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA. 3. Meets China Nonroad Stage IV emissio - -
    Note (2) Net power advertised is the power available at the flywheel when the engine is equipped with fan at minimum speed, air intake system, exhaust system, and alternator. - -
    Net Power - 814 hp -
    Emissions - U.S. EPA Tier 4 Final, U.S. EPA Tier 2 Equivalent Tier 4/Stage V
    Gross Power - SAE J1995 at 1,750 rpm - Tier 4/HRC (Highly Regulated Country) - Standard - 900 hp -
    Gross Power - SAE J1995 at 1,750 rpm - Tier 4/HRC - High Ambient - 937 hp -
    Gross Power - SAE J1995 at 1,750 rpm - Tier 2/LRC (Less Regulated Country) - Standard - 907 hp -
    Gross Power - SAE J1995 at 1,750 rpm - Tier 2/LRC - High Ambient - 944 hp -
    Gross Power - ISO 14396 at 1,750 rpm - Tier 4/HRC - Standard - 884 hp -
    Gross Power - ISO 14396 at 1,750 rpm - Tier 4/HRC - High Ambient - 921 hp -
    Gross Power - ISO 14396 at 1,750 rpm - Tier 2/LRC - Standard - 893 hp -
    Gross Power - ISO 14396 at 1,750 rpm - Tier 2/LRC - High Ambient - 931 hp -
    Net Power - SAE J1349 at 1,750 rpm - Tier 4/HRC - Standard - 814 hp -
    Net Power - SAE J1349 at 1,750 rpm - Tier 4/HRC - High Ambient - 814 hp -
    Net Power - SAE J1349 at 1,750 rpm - Tier 2/LRC - Standard - 823 hp -
    Net Power - SAE J1349 at 1,750 rpm - Tier 2/LRC - High Ambient - 823 hp -
    Peak Torque - SAE J1995 - Tier 4/HRC - Standard @ 1,200 rpm - 3514 ft·lbf -
    Peak Torque - SAE J1995 - Tier 4/HRC - High Ambient @ 1,300 rpm - 3555 ft·lbf -
    Peak Torque - SAE J1995 - Tier 2/LRC - Standard @ 1,200 rpm - 3537 ft·lbf -
    Peak Torque - SAE J1995 - Tier 2/LRC - High Ambient @ 1,350 rpm - 3570 ft·lbf -
    Net Power - ISO 9249 - - 225 hp
    Note - - The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.9 kg (4.2 lb) of refrigerant which has a CO2 equivalent of 2.717 metric tonnes (2.995 tons).
    Maximum Net Power - 1,700 rpm - ISO 9249 - Metric - - 228 hp
    Maximum Power - 1,700 rpm - ISO 14396 - - 240 hp
    Maximum Power - 1,700 rpm - ISO 14396 - Metric - - 243 hp
    Peak Gross Torque - 1,400 rpm - SAE J1995 - - 811 ft·lbf
    Peak Gross Torque - 1,400 rpm - ISO 14396 - - 805 ft·lbf
    Maximum Net Power - 1,700 rpm - ISO 9249 - - 225 hp
    Maximum Net Power - 1,700 rpm - SAE J1349 - - 225 hp
    Maximum Power - 1,700 rpm - SAE J1995 - - 241 hp

    Operating Specifications
    Operating Weight 112574 lb 233430 lb -
    Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3) 11.5-24.5 m³ (15-32 yd³) -
    Rated Payload - Quarry Face 12.5 t - -
    Rated Payload - Loose Material 16 t - -
    Cat Truck Match - Standard 770 - 772 775/777 -
    Cat Truck Match - High Lift 773 - 775 785 -
    Rated Payload - Standard - 25.5 ton (US) -
    Rated Payload - Standard (Material Handler) - 30 ton (US) -
    Rated Payload - High Lift - 22.5 ton (US) -
    Rated Payload - High Lift (Material Handler) - 27 ton (US) -

    Transmission
    Transmission Type Cat planetary powershift Cat Planetary Powershift -
    Forward - 1 4 mile/h 4.3 mile/h 4.5 mile/h
    Forward - 2 7.2 mile/h 7.4 mile/h 8 mile/h
    Forward - 3 12.7 mile/h 12.7 mile/h 14.2 mile/h
    Forward - 4 21.6 mile/h - 22.4 mile/h
    Reverse - 1 4.7 mile/h 4.7 mile/h 4.5 mile/h
    Reverse - 2 8.3 mile/h 8.1 mile/h 8 mile/h
    Reverse - 3 14.4 mile/h 13.9 mile/h 14.2 mile/h
    Direct Drive - Forward 1 Lock-up disabled Disabled -
    Direct Drive - Forward 2 7.8 mile/h 8 mile/h -
    Direct Drive - Forward 3 13.9 mile/h 14 mile/h -
    Direct Drive - Forward 4 24.4 mile/h - -
    Direct Drive - Reverse 1 5 mile/h 5 mile/h -
    Direct Drive - Reverse 2 8.9 mile/h 8.8 mile/h -
    Direct Drive - Reverse 3 15.8 mile/h 15.3 mile/h -
    Note - - Maximum travel speed in standard vehicle with empty bucket and standard L3 tires with 760 mm (30 in) roll radius.

    Hydraulic System - Lift/Tilt
    Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing Positive Flow Control -
    Lift/Tilt System - Pump Variable displacement piston Variable Displacement Piston -
    Maximum Flow at 1,400-1,860 rpm 153 gpm - -
    Relief Valve Setting - Lift/Tilt 4757 psi 5000 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 266 mm × 685 mm (8.7 in × 27 in) - -
    Pilot System Variable displacement piston - -
    Relief Valve Setting - Main 551 psi - -
    Maximum Flow at 2,165 rpm - 250 gpm -
    Lift Cylinder - Bore - 9.3 in -
    Lift Cylinder - Stroke - 63.5 in -
    Tilt Cylinder - Bore - 11.5 in -
    Tilt Cylinder - Stroke - 41.5 in -

    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 Pilot, Load Sensing -
    Steering System - Pump Piston, variable displacement Piston, Variable Displacement -
    Maximum Flow at 1,400-1,600 rpm 71.3 gpm - -
    Relief Valve Setting - Steering 4351 psi - -
    Total Steering Angle 86 ° 80° -
    Steering Cycle Times - High Idle 3.4 s 3.1 s -
    Steering Cycle Times - Low Idle 5.6 s 4.9 s -
    Maximum Flow at 1,400-1,850 rpm - 70 gpm -
    Steering Cut Off Pressure - 4500 psi -

    Air Conditioning System
    Air Conditioning • The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. • If equipped with R134a (Global Warming Potential = 1430), the system - -

    Axles
    Front Fixed Fixed -
    Rear Trunnion Trunnion -
    Oscillation Angle 13 ° ±9° -

    Brakes
    Brakes ISO 3450:2011 ISO 3450:2011 -

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

    Sound Performance - Tier 4 Final / Stage V
    Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A) - -
    Machine Sound Power Level (ISO 6395:2008) 111 dB(A) - -
    Operator Sound Pressure Level (ISO 6396:2008)* 72 dB(A) - -
    Machine Sound Power Level (ISO 6395:2008)** 109 dB(A) - -
    Note (1) * For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives.” - -
    Note (2) ** European Union Directive “2000/14/EC” as amended by “2005/88/EC” and UK Noise Regulation 2001 No. 1701. - -
    Note (3) The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed. - -
    Note (4) The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed. - -
    Note (5) 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. - -

    Sound Performance - Tier 3 / Stage IIIA
    Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A) - -
    Machine Sound Power Level (ISO 6395:2008) 112 dB(A) - -
    Operator Sound Pressure Level (ISO 6396:2008)* 72 dB(A) - -
    Machine Sound Power Level (ISO 6395:2008)** 110 dB(A) - -
    Note (1) * For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives.” - -
    Note (2) ** European Union Directive “2000/14/EC” as amended by “2005/88/EC” and UK Noise Regulation 2001 No. 1701. - -
    Note (3) The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed. - -
    Note (4) The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed. - -
    Note (5) 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. - -

    Service Refill Capacities
    Fuel Tank 188 gal (US) 385.7 gal (US) -
    Cooling System 31.7 gal (US) - 13.2 gal (US)
    Coolant (Validated by Test Cell Fill Quantities) 33 gal (US) - -
    Crankcase 15.9 gal (US) 31.7 gal (US) 4.8 gal (US)
    Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage V Only) 8.7 gal (US) - -
    Transmission 24.3 gal (US) 51.5 gal (US) 11.9 gal (US)
    Transmission - Validated by Test Cell Fill Quantities 29 gal (US) - -
    Differential - Final Drives - Front 49.1 gal (US) 96.4 gal (US) 10.6 gal (US)
    Differential - Final Drives - Rear 49.1 gal (US) 96.4 gal (US) 10 gal (US)
    Hydraulic System Factory Fill 125.5 gal (US) - -
    Hydraulic System - Tank Only 63.4 gal (US) - -
    Note • All non-road Tier 4 Final/Stage V 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 acid methyl ester - -
    Cooling Systems - 59.4 gal (US) -
    Hydraulic System Factory Fill (Implement) - 104.1 gal (US) -
    Hydraulic Tank - Implement - 60.2 gal (US) -
    Hydraulic Factory Fill (Steering) - 32.5 gal (US) -
    Hydraulic Tank (Steering Tank Only) - 26.3 gal (US) -
    DEF Tank - - 4.2 gal (US)
    Fuel Tank Size - - 76.6 gal (US)
    Hydraulic Tank - - 29.6 gal (US)

    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 - 11.5-24.5 m³ (15-32 yd³) 2.9-4.4 m³ (3.75-5.75 yd³)

    Hydraulic Cycle Times
    Rack Back - 2.3 s -
    Rack Back - High Lift - 2.3 s -
    Raise - 9 s -
    Raise - High Lift - 9 s -
    Dump - 2.6 s -
    Dump - High Lift - 2.6 s -
    Float Down - 3.2 s -
    Float Down - High Lift - 3.2 s -
    Total Hydraulic Cycle Time - 17.1 s -

    Cooling System
    Ambient Capability Hydraulically Driven Demand Fan - Standard - 109.4 °F -
    Ambient Capability, Hydraulically Driven Demand Fan - High - 131 °F -

    Sound Performance - Standard
    Note - Machine Sound Level (ISO 6396:2008) - 116 dB(A) -

    Sound Performance - Suppression
    Note - Machine Sound Level (ISO 6396:2008) - 113 dB(A) -

    Dimensions - Standard Lift - Approximate
    Ground to Top of Exhaust Stacks - 17 ft -
    Ground to Top of ROPS - 18.3 ft -
    Ground to Top of Hood - 13.1 ft -
    Ground to Center of Front Axle - 4.3 ft -
    Ground to Bumper Clearance - 3.8 ft -
    Ground to Lower Hitch Clearance - 2.2 ft -
    Reach - Maximum Lift - 8.2 ft -
    Clearance at Maximum Lift - 15.2 ft -
    B-Pin Height - Maximum Lift - 22.8 ft -
    Maximum Overall Height - Bucket Raised - 30.8 ft -
    Rear Axle - Centerline to Bumper - 13.5 ft -
    Tread Width - 10.83 ft -
    Rack Back Angle - Maximum Lift - 56.9 degrees -
    Dump Angle at Maximum Lift - -49.5 degrees -
    Rack Back Angle - Ground Level - 40.2 degrees -
    Width - Over Tires - With Bulge - 14.74 ft -
    Rack Back Angle - Carry - 48.9 degrees -
    Wheel Base - 19.3 ft -
    Maximum Overall Length - 50.8 ft -
    Front Axle Centerline to Bucket Tip - 18 ft -

    Dimensions - High Lift - Approximate
    Tread Width - 10.83 ft -
    Rack Back Angle - Ground Level - 42.5 degrees -
    Dump Angle at Maximum Lift - -48.1 degrees -
    Rack Back Angle - Maximum Lift - 56.2 degrees -
    Width - Over Tires - With Bulge - 14.75 ft -
    Rack Back Angle - Carry - 51.6 degrees -
    Ground to Top of Exhaust Stacks - 17 ft -
    Ground to Top of ROPS - 18.3 ft -
    Ground to Top of Hood - 13.1 ft -
    Ground to Center of Front Axle - 4.3 ft -
    Ground to Bumper Clearance - 3.8 ft -
    Ground to Lower Hitch Clearance - 2.2 ft -
    Reach - Maximum Lift - 7.6 ft -
    Clearance at Maximum Lift - 17.2 ft -
    B-Pin Height - Maximum Lift - 24.5 ft -
    Maximum Overall Height - Bucket Raised - 32 ft -
    Rear Axle - Centerline to Bumper - 13.5 ft -
    Wheel Base - 19.3 ft -
    Maximum Overall Length - 51.6 ft -
    Front Axle Centerline to Bucket Tip - 18.8 ft -

    Weights
    Operating Weight - - 41554 lb

    Sound
    With Cooling Fan Speed at Maximum Value - Exterior Sound Pressure Level (SAE J88:2013) - - 76 dB(A)*
    Note (1) - - *Distance of 15 m (49.2 ft), moving forward in second gear ratio.
    With Cooling Fan Speed at 70% of Maximum Value: Note (2) - - European Union Directive "2000/14/EC" as amended by "2005/88/EC."
    With Cooling Fan Speed at 70% of Maximum Value - Operator Sound Pressure Level (ISO 6396:2008)** - - 73 dB(A)
    With Cooling Fan Speed at 70% of Maximum Value: Note (1) - - For machines in European Union countries and in countries that adopt the EU Directives
    With Cooling Fan Speed at Maximum Value - Note - - Distance of 15 m (49.2 ft), moving forward in second gear ratio.
    With Cooling Fan Speed at 70% of Maximum Value - Exterior Sound Power Level (ISO 6395:2008)** - - 107 LWA***
    Note (3) - - ***European Union Directive "2000/14/EC" as amended by "2005/88/EC."
    Note (2) - - **For machines in European Union countries and in countries that adopt the "EU Directives."
    With Cooling Fan Speed at Maximum Value - Operator Sound Pressure Level (ISO 6396:2008) - - 73 dB(A)
    With Cooling Fan Speed at Maximum Value - Exterior Sound Power Level (ISO 6395:2008) - - 109 dB(A)

    Dimensions
    Rack Back - Ground - - 40 degrees
    Height - Top of Exhaust Pipe - - 11.17 ft
    Centerline of Rear Axle to Hitch - - 5.42 ft
    Lift Arm Clearance - - 12 ft
    B-Pin Height - - 13.75 ft
    Centerline of Rear Axle to Edge of Counterweight - - 6.75 ft
    Ground Clearance - - 1.5 ft
    Rack Back - Maximum Lift - - 60 degrees
    Height - Top of Hood - - 8.75 ft
    Wheel Base - - 10.83 ft
    Height - Top of ROPS - - 11.33 ft
    Rack Back - Carry - - 45 degrees
    Note - - All dimensions are approximate and based on MAXAM MS302 23.5R25 L3 radial tires.

    Weights and Operating Specifications
    Note (2) - - *Full compliance to ISO (2007) 14397-1 Sections 1 thru 6, which requires 2% verification between calculations and testing.
    Tipping Load - Full Turn - Rigid Tires** - - 25875 lb
    Breakout Force - - 34638 lbf
    Tipping Load - Full Turn - ISO 14397-1* - - 24264 lb
    Note (3) - - **Compliance to ISO (2007) 14397-1 Sections 1 thru 5.
    Operating Weight - - 41554 lb
    Note (1) - - For 3.1 m3 (4.0 yd3) general purpose buckets with BOCE. Weight based on a machine configuration with MAXAM MS302 23.5R25 L3 radial tires, full fluids, operator, standard counterweight, cold start, roading fenders, Product Link™, secondary steering, sound

    Hydraulic System
    Hydraulic Cycle Time - Total Cycle Time - - 9.4 s
    Steering System - Pump Type - - Piston
    Implement System - Maximum Operating Pressure @ 50 ± 1.5 L/min (13.2 + 0.4 gal/min) - - 4047 psi
    Implement System - Maximum Pump Output at 2,390 rpm - - 68 gpm

    Engine - Tier 4 Final/Stage IV
    Emissions - - Tier 4/Stage IV
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