Case Drain Flow for Piston Motor (Drum Propel) - Test
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| Required Tools | ||
| Part Number | Description | Quantity |
| 4C-8689 | Flow Meter | 1 |
| 4C-6500 | Digital Thermometer | 1 |
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Personal injury or death can result from sudden machine movement. Sudden movement of the machine can cause injury to persons on or near the machine. To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine. |
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| NOTICE |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
Before you conduct the testing and adjusting, refer to the following steps:
- Stop the machine. Apply the parking brake.
- Place the propel control lever in NEUTRAL position.
- Disconnect case drain line (1) from the drum motor (2). Install 4C-8689 Flow Meter between the case drain line (1) and the drum motor. This allows the leakage oil to flow from the drum motor through the flow meter and into the case drain line.
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| Illustration 1 | g00697511 |
(1) Case drain line. (2) Drum propel motor. | |
- Install the 4C-6500 Digital Thermometer into the hydraulic oil tank. Start the engine and run the engine at high idle until the hydraulic oil temperature reaches 38°C (100 °F).
- Read the amount of oil that is flowing through the flow meter. The oil flow should be less than 4 L/min (1 US gpm). If the leakage is more than 4 L/min (1 US gpm), the drum motor should be repaired or replaced.
- Remove the flow meter and test tooling. Reconnect the case drain line (1) to the drum motor.
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