Air Pressure Test
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
10R80MHT Air Ports
| Item | Description |
|---|---|
| 1 | A clutch |
| 2 | B clutch |
| 3 | C clutch |
| 4 | D clutch |
| 5 | E clutch |
| 6 | F clutch |
| 7 | TCC apply |
| 8 | TCC release |
| 9 | Lube |
| 10 | To cooler |
| 11 | From cooler |
| 12 | Line pressure tap |
| 13 | Engine Disconnect Clutch |
| 14 | Hybrid Drive Unit Lubrication |
NOTE:
When applying air pressure to the clutches using the indicated ports, restrict air pressure to no more than 40 PSI (276 kpa).
NOTE:
The D clutch apply chamber contains a small bleed hole to provide fluid to the F clutch balance circuit. Some leakage in the D clutch circuit may be normal.
- 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.
- Cross leaks between the C, D and F clutches will be noticed if the volume of air is not sufficient to seat the Teflon sealing rings.
- The engine disconnect clutch piston apply may not be audible.
- 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.