988 Wheel Loader
Cat® Large Wheel Loaders are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a lower cost per ton. Introduced in 1963, the 988 has been the industry leader for 60 years. Focused on helping our customers succeed, we have continued to build upon each new series. The 988 continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.
| Operating Weight | 51062 kg |
|---|---|
| Bucket Capacity Range | 4.7-13 m3 (6.2-17 yd3) |
| Cat Truck Match - Standard | 770～772 |
| Cat Truck Match - High Lift | 773～775 |
| Rated Payload - Loose Material | 14.5 t |
| Rated Payload - Quarry Face | 11.3 t |
| Bucket Capacities | 4.7-13 m3 (6.2-17 yd3) |
|---|
| Net Power | 403 kW |
|---|---|
| Engine Model | Cat® C18 ™ |
| Rated Speed | 1700/min |
| Peak Power Speed | 1500/min |
| Torque Rise | 58 % |
| Bore | 145 mm |
| Stroke | 183 mm |
| Displacement | 18.1 l |
| Emissions | U.S. EPA Tier 4 Final/EU Stage V OR Tier 3/Stage IIIA Equivalent OR Tier 2/Stage II Equivalent |
| Gross - ISO 14396 | 432 kW |
| Net Power - SAE J1349 | 403 kW |
| Peak Power Speed - 1,500 rpm - Gross - ISO 14396 | 432 kW |
| Peak Power Speed - 1,500 rpm - Gross - SAE J1995 | 439 kW |
| Peak Power Speed - 1,500 rpm - Net Power - SAE J1349 | 403 kW |
| Peak Torque - 1,200 rpm | 2852 N·m |
| Forward - 1 | 6.5 km/h |
|---|---|
| Forward - 2 | 11.6 km/h |
| Forward - 3 | 20.4 km/h |
| Forward - 4 | 34.7 km/h |
| Reverse - 1 | 7.5 km/h |
| Reverse - 2 | 13.3 km/h |
| Reverse - 3 | 23.2 km/h |
| Direct Drive - Forward 4 | 39.3 km/h |
| Direct Drive - Forward 1 | Lock-up disabled |
| Direct Drive - Forward 2 | 12.5 km/h |
| Direct Drive - Forward 3 | 22.3 km/h |
| Direct Drive - Reverse 1 | 8 km/h |
| Direct Drive - Reverse 2 | 14.3 km/h |
| Direct Drive - Reverse 3 | 25.5 km/h |
| Transmission Type | Cat planetary powershift |
| Front | Fixed |
|---|---|
| Oscillation Angle | 13 ° |
| Rear | Trunnion |
| Lift/Tilt System - Circuit | EH- Positive Flow Control, Flow Sharing |
|---|---|
| Lift/Tilt System | Variable displacement piston |
| Relief Valve Setting - Lift/Tilt | 32800 kPa |
| Pilot System | Variable displacement piston |
| 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) |
| Maximum Flow | 52 l/min |
| Maximum Flow at 1,400-1,860 rpm | 580 l/min |
| Relief Valve Setting - Main | 3800 kPa |
| Relief Valve Setting - Steering | 30000 kPa |
|---|---|
| Total Steering Angle | 86 ° |
| Steering Cycle Times - High Idle | 3.4 s |
| Steering Cycle Times - Low Idle | 5.6 s |
| Maximum Flow | 270 l/min |
| Steering System - Circuit | Pilot, load sensing |
| Steering System - Pump | Piston, variable displacement |
| Fuel Tank | 712 l |
|---|---|
| Cooling System | 120 l |
| Transmission | 120 l |
| Differential - Final Drives - Front | 186 l |
| Differential - Final Drives - Rear | 186 l |
| Hydraulic System - Tank Only | 240 l |
| Coolant (Validated by Test Cell Fill Quantities) | 125 l |
| Crankcase | 60 l |
| Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only) | 33 l |
| Hydraulic System Factory Fill | 475 l |
| Transmission - Validated by Test Cell Fill Quantities | 110 l |
| Brakes | SAE J1473 OKT90, ISO 3450:1992 |
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| Dump | 2.2 s |
|---|---|
| Lower Float Down | 3.5 s |
| Rack Back | 4.5 s |
| Raise | 8 s |
| Total Hydraulic Cycle Time - Empty Bucket | 18.2 s |
| Machine Sound Level (ISO 6395) | 112 dB(A) |
|---|---|
| Operator Sound Level (ISO 6396) | 73 dB(A) |
| Machine Sound Level (ISO 6395) | 110 dB(A) |
|---|---|
| Operator Sound Level (ISO 6396) | 72 dB(A) |
| Machine Sound Level (ISO 6395) | 111 dB(A) |
|---|---|
| Operator Sound Level (ISO 6396) | 72 dB(A) |
| Machine Sound Level (ISO 6395) | 109 dB(A) |
|---|---|
| Operator Sound Level (ISO 6396) | 72 dB(A) |
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