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 990 Wheel Loader |
 988 XE Wheel Loader |
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Engine |
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| Engine Model | C27 Cat® | Cat® C18 ™ | - |
| Rated Speed | 1,800/min | 1,700 rpm | - |
| Engine Power - ISO 14396:2002 | 752 hp | 580 hp | - |
| Gross Power - SAE J1995:2014 | 766 hp | 588 hp | - |
| Net Power - SAE J1349 - Standard Ambient | 699 hp | - | - |
| Net Power - SAE J1349 - High Ambient | 648 hp | - | - |
| Bore | 5.4 in | 5.7 in | - |
| Stroke | 6 in | 7.2 in | - |
| Displacement | 1649.5 in³ | 1105 in³ | - |
| Peak Torque - 1,200 rpm | 2624 lb/ft | - | - |
| Torque Rise | 18 % | 58% | - |
| Emissions | 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, and Japan 2014 | - |
| Net Power - SAE J1349:2011 | - | 538 hp | - |
| Peak Power Speed | - | 1,500 rpm | - |
| Peak Torque - 1,200 rpm - SAE J1995 | - | 2230 ft·lbf | - |
Transmission |
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| Transmission Type | Cat planetary power shift | Cat switched reluctance electric drive | - |
| Forward - 1 | 4.5 mile/h | - | - |
| Forward - 2 | 8.3 mile/h | - | - |
| Forward - 3 | 14.2 mile/h | - | - |
| Reverse - 1 | 4.9 mile/h | - | - |
| Reverse - 2 | 9.1 mile/h | - | - |
| Reverse - 3 | 15.5 mile/h | - | - |
| Direct Drive - Forward 1 | Lock-up disabled | - | - |
| Direct Drive - Forward 2 | 8.5 mile/h | - | - |
| Direct Drive - Forward 3 | 15.2 mile/h | - | - |
| Direct Drive - Reverse 1 | 5.4 mile/h | - | - |
| Direct Drive - Reverse 2 | 9.6 mile/h | - | - |
| Direct Drive - Reverse 3 | 16.4 mile/h | - | - |
| Note | Travel speeds based on Michelin 45/65R39 LD D2**L5 tires. | - | - |
| Forward 1 (virtual) | - | 4.3 mile/h | - |
| Forward 2 (virtual) | - | 7 mile/h | - |
| Forward 3 (virtual) | - | 13.8 mile/h | - |
| Forward 4 (virtual) | - | 20 mile/h | - |
| Reverse 1 (virtual) | - | 4.3 mile/h | - |
| Reverse 2 (virtual) | - | 7 mile/h | - |
| Reverse 3 (virtual) | - | 17.5 mile/h | - |
Operating Specifications |
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| Operating Weight | 178517 lb | 116362 lb | - |
| Rated Payload - Standard | 17.5 ton (US) | - | - |
| Rated Payload - High Lift | 17.5 ton (US) | - | - |
| Bucket Capacity Range | 8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³) | 4.7-13 m3 (6.2-17 yd3) | - |
| Cat Truck Match - Standard | 773-775 | - | - |
| Cat Truck Match - High Lift | 775-777 | - | - |
| Operating Weight - Standard | - | 116362 lb | - |
| Operating Weight - High Lift | - | 119618 lb | - |
| Rated Payload - Standard (Quarry Face) | - | 12.5 ton (US) | - |
| Rated Payload - Loose Material (Standard) | - | 16 ton (US) | - |
Hydraulic System - Lift/Tilt |
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| Lift/Tilt System - Circuit | Positive flow control | EH-Positive Flow Control, Flow Sharing | - |
| Lift/Tilt System | Variable displacement piston | - | - |
| Maximum Flow at 1,800 rpm (1) | 240 gal/min | - | - |
| 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) | - | - |
| Pilot System | Open loop and pressure reducing | - | - |
| Relief Valve Setting - Main | 507 psi | - | - |
| Relief Valve Setting - Lift/Tilt | 4786 psi | 4757 psi | - |
| Lift/Tilt System - Pump | - | Variable displacement piston | - |
| Maximum Flow at 1,400-1,600 rpm | - | 153 gal/min | - |
| Lift Cylinder - Bore | - | 8.7 in | - |
| Lift Cylinder - Stroke | - | 41.3 in | - |
| Tilt Cylinder - Bore | - | 8.7 in | - |
| Tilt Cylinder - Stroke | - | 27 in | - |
Hydraulic Cycle Times |
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| Rack Back | 4.3 s | 4.5 s | - |
| Raise | 8.2 s | 8 s | - |
| Dump | 2.9 s | 2.2 s | - |
| Lower | 3.7 s | - | - |
| Lower Float Down | 3.6 s | 3.5 s | - |
| Total Hydraulic Cycle Time - Empty Bucket | 13.8 s | - | - |
| Total Hydraulic Cycle Time | - | 18.2 s | - |
Hydraulic System - Steering |
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| Steering System - Circuit | Pilot, load sensing | Pilot, load sensing | - |
| Steering System - Pump | Piston, variable displacement | Piston, variable displacement | - |
| Maximum Flow at 1,400 rpm | 96.2 gal/min | - | - |
| Relief Valve Setting - Steering | 5004 psi | - | - |
| Total Steering Angle | 70° | 86° | - |
| Maximum Flow at 1,400-1,600 rpm | - | 71.3 gal/min | - |
| Steering Cut Off Pressure | - | 4351 psi | - |
| Steering Cycle Times - High Idle | - | 3.4 s | - |
| Steering Cycle Times - Low Idle | - | 5.6 s | - |
Air Conditioning System |
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| 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). | 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 |
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| Front | Fixed | Fixed | - |
| Rear | Trunnion | Trunnion | - |
| Oscillation Angle | 8.5° | 13° | - |
Brakes |
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| Brakes | ISO 3450: 2011 | ISO 3450:2011 | - |
Service Refill Capacities |
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| Fuel Tank | 294.3 gal (US) | 147 gal (US) | - |
| Cooling System | 54.9 gal (US) | - | - |
| Engine Crankcase | 20 gal (US) | 16 gal (US) | - |
| Transmission | 29.1 gal (US) | 16 gal (US) | - |
| Differential - Final Drives - Front | 71.6 gal (US) | 49 gal (US) | - |
| Differential - Final Drives - Rear | 68.9 gal (US) | 49 gal (US) | - |
| 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) | - | - |
| 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 | All nonroad Tier 4 Final/Stage V diesel engines are required to use: – The machine has the flexibility to run on either ultra-low-sulfur diesel fuel (ULSD with 15 ppm of sulfur or less). – Cat engines are compatible with the following renewable, alternati | - |
| Cooling System - Jacket Water | - | 30 gal (US) | - |
| Cooling Systems - Power Train | - | 8 gal (US) | - |
| Diesel Exhaust Fluid Tank | - | 8.7 gal (US) | - |
| Hydraulic System - Implement/Steering | - | 126 gal (US) | - |
Sound Performance - Standard |
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| Operator Sound Level (ISO 6396:2008) | 65.5 dB(A) | - | - |
| Machine Sound Level (ISO 6395:2008) | 115 dB(A) | - | - |
Sound Performance - Suppression |
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| Operator Sound Level (ISO 6396:2008) | 65.5 dB(A) | - | - |
| Machine Sound Level (ISO 6395:2008) | 113 dB(A) | - | - |
Buckets |
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| Bucket Capacities | 8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³) | 4.7-13 m3 (6.2-17 yd3) | - |
Operator's Cab |
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| ROPS/FOPS | - | ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards | - |
Sound Performance - Tier 4 Final / Stage V - Standard |
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| Operator Sound Pressure Level (ISO 6396:2008) | - | 72 dB(A) | - |
| Machine Sound Power Level (ISO 6395:2008) | - | 109 dB(A) | - |
Sound Performance - Tier 3 / Stage III - Standard |
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| Operator Sound Pressure Level (ISO 6396:2008) | - | 72 dB(A) | - |
| Machine Sound Power Level (ISO 6395:2008) | - | 110 dB(A) | - |
Dimensions (Approximate) - Standard Lift |
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| 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 | - |
| Ground to Bumper Clearance | - | 3.1 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 | - |
| Ground to Center of Axles | - | 3.2 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 | - |
| Note | - | Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height. | - |
Dimensions (Approximate) - High Lift |
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| 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 | - |
| Ground to Bumper Clearance | - | 3.1 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 | - |
| Ground to Center of Axles | - | 3.2 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 | - |
| Note | - | Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height. | - |
Dimensions - Millyard Linkage |
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| Ground to Top of ROPS | - | 13.8 ft | - |
| Ground to Top of Exhaust Stacks | - | 13.8 ft | - |
| Ground to Top of Hood | - | 10.9 ft | - |
| Ground to Bumper Clearance | - | 3.1 ft | - |
| Rear Axle - Centerline to Bumper | - | 10.5 ft | - |
| Front Axle Centerline to Fork Tip | - | 16.5 ft | - |
| Wheel Base | - | 14.9 ft | - |
| Maximum Overall Length | - | 41.9 ft | - |
| Ground to Lower Hitch Clearance | - | 1.9 ft | - |
| Ground to Center of Front Axle | - | 3.2 ft | - |
| Fork Height with Level Arms | - | 8.1 ft | - |
| Fork Top Clamp Opening | - | 13.1 ft | - |
| Fork Height at Maximum Lift | - | 17.2 ft | - |
| Hinge Pin Height at Maximum Lift | - | 16.1 ft | - |
| Dump Angle at Maximum Lift | - | -39.4 ° | - |
Sustainability |
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| Recyclability | - | 96% | - |
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