Transmission Oil Pump Pressure - Test - Rear Power Train
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| Transmission Oil Pump Pressure | |||
|---|---|---|---|
| Date | Equipment ID Code | ||
| Pressure Specification | Actual | ||
| Low Idle | |
||
| High Idle | Greater than |
||
This test will determine if the transmission oil pump is working correctly.
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| Illustration 1 | g02571852 |
|
Tooling (A) 198-4240 Digital Pressure Indicator Gp | |
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| Tool | Item | Qty | Part No | Description |
|---|---|---|---|---|
| A | 198-4240 | Digital Pressure Indicator Gp | ||
| A1 | 1 | 198-4234 | Digital Indicator | |
| A2 | 1 | 198-4237 | Pressure Sensor Gp
(0 to 3,445 kPa (0 to 500 psi)) |
|
| A3 | 1 | 198-4236 | Adapter Cable As | |
- Connect Tool (A) to pressure tap (1).
- Activate the parking brake.
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| Illustration 2 | g01033414 |
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Right Side of the Scraper Engine (1) Pressure tap for the transmission oil pump at the transmission filter | |
- Start the engines and run the engines at LOW IDLE rpm in the NEUTRAL position. The pressure on the digital pressure indicator must read
1270 ± 110 kPa (184 ± 16 psi) . - Slowly increase the scraper engine to HIGH IDLE rpm. Depress the governor control pedal for the scraper to the maximum governor setting. The pressure on the digital pressure indicator must read a minimum of
1250 kPa (181 psi) . - When the test is complete, turn off the engines. Remove the test equipment.
If the transmission oil pump pressure is too low, the pump has failed.
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