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 988 GC Wheel Loader |
 938M Aggregate Handler Small Wheel Loader |
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Operating Specifications |
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| Operating Weight | 112426 lb | - | - |
| Bucket Capacity Range | 6.4-7.6 m3 (8.3-10 yd3) | - | - |
| Rated Payload - Quarry Face | 12.5 ton (US) | - | - |
| Cat Truck Match - High Lift | 772/773/775 | - | - |
| Full Turn Tip Load (2) | - | 10 662 kg (23,504 lb)^ | - |
| Full Turn Tip Load (1) | - | 10 551 kg (23,260 lb)** | - |
| Note (2) | - | ^Aggregate Handler equipped with full counterweight, optional guards, roading fenders, cold start package, and 23.5R25 tires. | - |
| Note (1) | - | **Aggregate Handler machine equipped with full counterweight and optional guards. | - |
Engine |
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| Engine Model | Cat® C15 | Cat® C7.1 | - |
| Rated Speed | 2000 rpm | - | - |
| Peak Power Speed | 1600 rpm | - | - |
| Gross Power - SAE J1995:2014 | 456 hp | - | - |
| Net Power - SAE J1349:2011 | 448 hp | - | - |
| Bore | 5.4 in | 4 in | - |
| Stroke | 6.75 in | 5 in | - |
| Displacement | 927 in³ | 427 in³ | - |
| Peak Torque (1,200 rpm) - SAE J1995:2014 | 1778 lbf·ft | - | - |
| Torque Rise | 16% | - | - |
| Note (1) | Two engine emission options are available: 1. Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan emission standards. 2. Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA. | *Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology. | - |
| 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 ratings are tested at the reference conditions for the specified standard and denote power available at the flywheel when the engine is equipped with alternator, air cleaner, emission components and fan at specified speed. | - |
| Note (3) | Net power at the flywheel when the fan is at maximum speed is 304 kW / 408 hp per SAE reference conditions. | No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems. | - |
| Maximum Gross Power | - | 188 hp | - |
| Maximum Gross Power - ISO 14396 (Performance Power Mode: Range 1-4) | - | 188 hp | - |
| Maximum Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4) | - | 1800 r/min | - |
| Maximum Rated Gross Power - ISO 14396 | - | 188 hp | - |
| Maximum Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*) | - | 1600 r/min | - |
| Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4) | - | 649 ft·lbf | - |
| Maximum Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*) | - | 173 hp | - |
| Emissions | - | The Cat C7.1 engine meets U.S. EPA Tier 4 Final, EU Stage V and Korea Tier 4 Final emission standards. | - |
| Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*) | - | 627 ft·lbf | - |
| Maximum Net Torque - ISO 9249 (Performance Power Mode: Range 1-4) | - | 650 ft·lbf | - |
| Net Power - ISO 9249 (metric) at Minimum Fan Speed (Performance Power Mode: Range 1-4) | - | 186 hp | - |
| Net Power - ISO 9249 at Minimum Fan Speed (Performance Power Mode: Range 1-4) | - | 184 hp | - |
| Maximum Gross Power - ISO 14396 (metric) (Performance Power Mode: Range 1-4) | - | 190 hp | - |
| Net Power - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4) | - | 183 hp | - |
| Net Power - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) | - | 170 hp | - |
| Net Power (Standard Power Mode: Range 1-3*) | - | 1600 r/min | - |
| Maximum Gross Power - ISO 14396 (metric) (Standard Power Mode: Range 1-3*) | - | 176 hp | - |
| Net Power (Performance Power Mode: Range 1-4) | - | 1800 r/min | - |
| Maximum Rated Gross Power - ISO 14396 (metric) | - | 190 hp | - |
| Net Power - ISO 9249 (metric) at Minimum Fan Speed (Standard Power Mode: Range 1-3*) | - | 172 hp | - |
| Maximum Net Torque - ISO 9249 (Standard Power Mode: Range 1-3*) | - | 628 ft·lbf | - |
| Net Power - ISO 9249 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) | - | 170 hp | - |
| Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4) | - | 664 ft·lbf | - |
| Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*) | - | 642 ft·lbf | - |
Transmission |
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| Transmission Type | Cat planetary power shift | - | - |
| Forward - 1 | 5 mile/h | - | - |
| Forward - 2 | 8 mile/h | - | - |
| Reverse - 1 | 5 mile/h | - | - |
| Reverse - 2 | 8 mile/h | - | - |
| Direct Drive - Forward 1 | Lock-up disabled | - | - |
| Direct Drive - Forward 2 | 8 mile/h | - | - |
| Direct Drive - Forward 3 | 14 mile/h | - | - |
| Direct Drive - Forward 4 | 24 mile/h | - | - |
| Direct Drive - Reverse 1 | Lock-up disabled | - | - |
| Direct Drive - Reverse 2 | 9 mile/h | - | - |
| Direct Drive - Reverse 3 | 16 mile/h | - | - |
| Direct Drive - Reverse 4 | 25.4 mile/h | - | - |
| Note | Travel speeds based on 35/65-R33 tires. | * Creeper control allows maximum speed range adjustability from 1 km/h (0.6 mph) to 13 km/h (8 mph) in Range 1 through the secondary display when equipped. Factory default is 7 km/h (4.4 mph). | - |
| Forward and Reverse - Range 4 | - | 25 mile/h | - |
| Forward and Reverse - Range 1* | - | 1-13 km/h (0.6-8 mph) | - |
| Forward and Reverse - Range 2 | - | 8 mile/h | - |
| Forward and Reverse - Range 3 | - | 17 mile/h | - |
Hydraulic System - Lift/Tilt |
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| Lift/Tilt System - Circuit | EH - Load Sense | - | - |
| Lift/Tilt System - Pump | Variable displacement piston | - | - |
| Maximum Flow at 2,165 rpm | 159 gal/min | - | - |
| Relief Valve Setting - Lift/Tilt | 4598 psi | - | - |
| Cylinders, Double Acting - Lift, Bore and Stroke | 190 mm x 1216 mm (7.5 in x 48 in) | - | - |
| Cylinders, Double Acting - Tilt, Bore and Stroke | 170 mm x 722 mm (6.7 in x 28.4 in) | - | - |
| Pilot System | Variable displacement piston | - | - |
| Relief Valve Setting | 500 psi | - | - |
Hydraulic Cycle Times |
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| Rack Back | 3.8 s | - | - |
| Raise | 7.5 s | - | - |
| Dump | 3 s | - | - |
| Lower Float Down | 4.6 s | - | - |
| Total Hydraulic Cycle Time - Empty Bucket | 18.9 s | - | - |
Hydraulic System - Steering |
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| Steering System - Circuit | Pilot, load sensing | - | - |
| Steering System - Pump | Piston, variable displacement | - | - |
| Maximum Flow at 2,165 rpm | 52 gal/min | - | - |
| Relief Valve Setting - Steering | 4000 psi | - | - |
| Total Steering Angle | 70° | - | - |
| Steering Cycle Times - High Idle | 3 s | - | - |
| Steering Cycle Times - Low Idle | 5.2 s | - | - |
Air Conditioning System |
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| 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 co | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential – 1430. The system contains 1.9 kg of refrigerant which has a CO2 equivalent of 2.717 metric tonnes. | - |
Axles |
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| Front | Fixed | - | - |
| Rear | Trunnion | - | - |
| Oscillation Angle | +/-12.5° | - | - |
Brakes |
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| Brakes | ISO 3450:2011 | - | - |
Operator's Cab |
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| ROPS/FOPS | Rollover Protective Structure/Falling Objects Protective Structure (ROPS/FOPS) meet ISO 3471:2008 and ISO 3449:2005 Level II standards | - | - |
Sound Performance - Tier 4 Final / Stage V |
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| Operator Sound Pressure Level (ISO 6396:2008) | 73 dB(A) | - | - |
| Machine Sound Power Level (ISO 6395:2008) | 113 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. | - | - |
Sound Performance - Tier 3 / Stage IIIA |
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| Operator Sound Pressure Level (ISO 6396:2008) | 74 dB(A) | - | - |
| Machine Sound Power Level (ISO 6395:2008) | 113 dB(A) | - | - |
| Operator Sound Pressure Level (ISO 6396:2008)* | 73 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 |
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| Fuel Tank | 141 gal (US) | 51.5 gal (US) | - |
| Cooling System | 27 gal (US) | 8.5 gal (US) | - |
| Engine Crankcase | 9 gal (US) | 5.3 gal (US) | - |
| Diesel Exhaust Fluid Tank | 5.5 gal (US) | - | - |
| Transmission | 20 gal (US) | - | - |
| Differential - Final Drives - Front | 49 gal (US) | - | - |
| Differential - Final Drives - Rear | 45 gal (US) | - | - |
| Hydraulic System Factory Fill | 94 gal (US) | - | - |
| Note | Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: - 20% biodiesel FAME (fatty acid methyl ester) *** - 10 | - | - |
| Rear Axles | - | 9.2 gal (US) | - |
| Hydraulic System - Including Tank | - | 44.9 gal (US) | - |
| Hydraulic Tank | - | 23.8 gal (US) | - |
| Diesel Exhaust Fluid (DEF) Tank | - | 5 gal (US) | - |
| Front Axles | - | 9.2 gal (US) | - |
| Transmission - Gear Box | - | 2.9 gal (US) | - |
Dimensions (Approximate) - High Lift |
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| 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 | - | - |
| Ground to Fuel Tank Clearance | 2.2 ft | - | - |
| Rear Axle - Centerline to Bumper | 10.3 ft | - | - |
| Front Axle Centerline to Bucket Tip | 16.7 ft | - | - |
| Wheel Base | 12.5 ft | - | - |
| Maximum Overall Length | 39.5 ft | - | - |
| Ground to Lower Hitch Clearance | 1.5 ft | - | - |
| Ground to Center of Front Axle | 3.2 ft | - | - |
| Clearance at Maximum Lift (45° Dump) | 12 ft | - | - |
| B-Pin Height - Maximum Lift | 18.7 ft | - | - |
| Maximum Overall Height - Bucket Raised | 25 ft | - | - |
| Reach at Maximum Lift (45° Dump) | 7.7 ft | - | - |
| Note | Specifications are calculated with 6.9 m3 (9.0 yd3 ) rock bucket equipped with Michelin XLDD1 35/65 R33 tires. | - | - |
Weights |
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| Operating Weight | - | 36839 lb | - |
| Note (2) | - | ^Aggregate Handler equipped with full counterweight, optional guards, roading fenders, cold start package, and 23.5R25 tires. | - |
| Note (1) | - | **Aggregate Handler machine equipped with full counterweight and optional guards. | - |
| Operating Weight (2) | - | 16 710 kg (36,839 lb)^ | - |
| Operating Weight (1) | - | 16 199 kg (35,712 lb)** | - |
Buckets |
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| Bucket Capacities | - | 2.9-5.0 m3 (3.8-6.5 yd3) | - |
Cab |
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| ROPS | - | ISO 3471:2008 | - |
| Note (1) | - | * Measurements were conducted with cab doors and windows closed and at 70% of maximum engine cooling fan speed. Sound level may vary at different engine cooling fan speeds. | - |
| FOPS | - | ISO 3449:2005 LEVEL II | - |
| Declared Sound Levels | - | Declared Sound Levels – Operator Sound Pressure Level (ISO 6396:2008): 68 dB(A)* – Exterior Sound Power Level (ISO 6395:2008): 101 dB(A)* |
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Steering |
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| Maximum Flow - Steering Pump | - | 34 gal/min | - |
| Steering Cycle Times - Full Left to Full Right - Minimum RPM: Pump Flow Limited | - | 3.1 s | - |
| Steering Cycle Times - Full Left to Full Right - Maximum RPM: 90 rpm Steering Wheel Speed | - | 2.3 s | - |
| Steering Cylinder, Double Acting - Bore Diameter | - | 3.1 in | - |
| Steering Cylinder, Double Acting - Rod Diameter | - | 2 in | - |
| Steering Cylinder, Double Acting - Stroke | - | 15.7 in | - |
| Note (1) | - | Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders. | - |
| Maximum Working Pressure - Steering Pump | - | 3500 psi | - |
| Note (2) | - | Flow values listed are for a machine running in Performance Power Mode (1,800 rpm). | - |
Loader Hydraulic System |
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| Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure | - | 4351 psi | - |
| Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure | - | 4061 psi | - |
| Note (1) | - | Implement system uses a dedicated load sensing variable displacement pump with dual double acting lift cylinders and a single double acting tilt cylinder. | - |
| Tilt Cylinder, Double Acting - Bore Diameter | - | 5.9 in | - |
| Relief Pressure - Tilt Cylinder | - | 4351 psi | - |
| Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Dump (at Maximum Lift Height) | - | 1.5/1.7 seconds | - |
| Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Total Cycle Time | - | 9.7/10.6 seconds | - |
| Tilt Cylinder, Double Acting - Rod Diameter | - | 3.5 in | - |
| Maximum Flow - Implement Pump | - | 50 gal/min | - |
| Note (2) | - | Flow values listed are for a machine running in Performance Power Mode (1,800 rpm). | - |
| Tilt Cylinder, Double Acting - Stroke | - | 21.9 in | - |
| Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Raise (Ground Level to Maximum Lift) | - | 5.5/6.2 seconds | - |
| Maximum Flow - Implement Pump - 4th Function Maximum Flow* | - | 42 gal/min | - |
| Note (3) | - | * 3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped. | - |
| Lift Cylinder, Double Acting - Stroke | - | 31.1 in | - |
| Maximum Working Pressure - Implement Pump | - | 4061 psi | - |
| Lift Cylinder, Double Acting - Bore Diameter | - | 4.7 in | - |
| Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Float Down (Maximum Lift to Ground Level) | - | 2.7/2.7 seconds | - |
| Lift Cylinder, Double Acting - Rod Diameter | - | 2.6 in | - |
| Maximum Flow - Implement Pump - 3rd Function Maximum Flow* | - | 50 gal/min | - |
Power Train |
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| Brakes - Parking | - | Spring applied hydraulically released | - |
| Rear Axle - Traction Aid - Optional | - | Limited slip differential | - |
| Rear Axle - Oscillation Angle by Tire Size - 23.5 R25 | - | ± 7 degrees | - |
| Rear Axle | - | Oscillating | - |
| Rear Axle - Oscillation Angle by Tire Size - 20.5 R25, 550/65, 600/65, 650/65 | - | ± 10.5 degrees | - |
| Note (2) | - | Offset rims available to meet European roading requirements. | - |
| Note (1) | - | Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency. | - |
| Brakes - Service | - | Outboard wet disc | - |
| Note (3) | - | *Differential front locking axle can be engaged on the go at full torque to 20 km/h (12.4 mph) on the 938M. | - |
| Front Axle | - | Fixed | - |
| Front Axle - Traction Aid* | - | Locking differential (standard) | - |
Sustainability |
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| Recyclability | - | 94% | - |
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