Air Pressure Test
WARNING: This page is about a different variant/trim than selected.
8F57 Air Ports
| Item | Description |
|---|---|
| 1 | A clutch |
| 2 | B clutch |
| 3 | C clutch |
| 4 | E clutch |
| 5 | F clutch |
| 6 | TCC apply |
| 7 | TCC release |
| 8 | Pump out |
| 9 | Pump decrease |
| 10 | Lube |
| 11 | To transmission cooler |
| 12 | Line pressure tap |
| 13 | Transmission fluid auxiliary pump out |
NOTE:
When applying air pressure to the clutches using the indicated ports, restrict air pressure to no more than 40 PSI (276 kpa).
- Using a high volume (3/8" diameter) rubber tipped blow gun, apply
40 PSI (276kpa) to the suspect clutch port for 2-3 seconds.
- A dull thud indicates the clutch piston applied.
- A hissing noise may indicate a leak in the hydraulic passages.
- While holding the blow gun nozzle firmly against the port in the transmission case, release the trigger.
- Wait 1-2 seconds.
- A hissing noise may indicate a leak in the hydraulic passages.
- Remove the blow gun from the port.
- A sudden release of air pressure indicates the hydraulic passages are capable of holding pressure.
- No noise may indicate a leak in the hydraulic passages.