Air Pressure Test Port Locations
WARNING: This page is about a different car, the 2012 Ford F550 Super Duty and 2012 Ford F450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
| Item | Description |
|---|---|
| 1 | Coast clutch feed |
| 2 | Intermediate clutch feed |
| 3 | Reverse clutch feed |
| 4 | Forward clutch feed |
| 5 | Direct clutch feed |
| 6 | Overdrive clutch feed |
A no-drive condition can exist, even with correct transmission fluid pressure, because of inoperative clutches or bands. See the Clutch, Solenoid, Application Charts , refer to CLUTCH, SOLENOID, APPLICATION CHARTS to determine the appropriate elements. A clutch concern can be located through a series of checks by substituting air pressure for transmission fluid pressure to determine the location of the concern.
Example: When the selector lever is in a forward gear range, a no-drive condition may be caused by an inoperative forward clutch.
- Drain the transmission fluid. Remove the transmission fluid pan.
- Remove the transmission filter and seal assembly, the solenoid body and solenoid-to-case gasket.
- Install the Air Test Plate along with the Transmission Test Plate Screw Set.
- Tighten to 10 Nm (89 lb-in).
- Locate the inoperative clutches by applying air pressure into the appropriate clutch port. See the AIR PRESSURE TEST PORT LOCATIONS illustration for clutch port locations.
- Apply 276 kPa (40 psi) of air pressure to the appropriate clutch port. A dull thud may be heard or movement felt when a clutch piston is applied. If the clutch seals or check ball are leaking, a hissing sound may be heard.
- If the clutches fail to operate during the air check:
- inspect the transmission fluid passages in the case.
- the piston seals are not seated, not installed or are damaged.
- plugged feed holes for clutch apply in the case and/or clutch cylinder.
- damaged piston and/or clutch cylinder.
- Repair as required and recheck.
- Reinstall all components.