Leakage Inspection: Notes

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

Illustration	Tool Name	Tool Number
	100W/12 Volt DC UV Lamp	164-R0751 or equivalent

Material

Item	Specification
Dye-Lite® ATF/Power Steering Fluid Leak Detection Dye 164-R3701 (Rotunda)	-

The transmission has the following parts to prevent external fluid leakage:

Gaskets
Lip-type seals
O-ring seals
Seal rings
Seal grommets
Thread sealant
Sealing washers

Fig 1: External Sealing

Courtesy of FORD MOTOR CO.

Item	Part Number	Description
1	7902	Torque converter assembly
2	7A248	Front pump seal
3	7A248	Front pump seal
4	7A136	Pump gasket
5	7N134	Front pump sealing bolt
6	7A020	Transmission fluid level indicator
7	7A228	Transmission fluid filler tube assembly
8	391308-S	Transmission fluid filler tube O-ring
9	7A160	Short transmission fluid inlet tube assembly
10	7005	Case
11	7Z276	Bulkhead connector O-ring seal
12	7G276	Bulkhead connector and harness
13	7M101	Turbine shaft speed (TSS) sensor (model-dependent)
14	7Z101	O-ring seal
15	7086	Extension housing gasket
16	7A039	Slip yoke extension assembly
17	7H103	Output shaft speed sensor
18	7Z101	O-ring seal
19	7052	Extension housing seal (rear wheel drive [RWD])
20	7085	Transmission output shaft retainer
21	7052	Extension housing seal (four wheel drive [4WD])
22	7A039	Fixed yoke extension housing
23	7222	PTO - case cover
24	7223	PTO - cover gasket
25	7B498	Manual control lever seal
26	390685-S	Plug - test port - 1/8-27 hex head
27	7A191	Transmission fluid pan gasket
28	7A194	Transmission fluid pan
29	6730	Transmission fluid pan drain plug

Leakage at the transmission fluid pan gasket often can be stopped by tightening the retaining bolts to specification. Refer to SPECIFICATIONS . If necessary, install a new transmission fluid pan-to-case gasket only if gasket is damaged.

If leakage is found by the solenoid body connector, refer to Solenoid Body Assembly .

When transmission fluid is found to be leaking between the case and the cooler tube fitting, tighten the fitting to maximum specification. Refer to TRANSAXLE/TRANSMISSION COOLING article.

NOTE: Do not try to stop the transmission fluid leak by increasing the torque beyond specification. This can cause damage to the case threads and/or case fittings.

If the leak continues, install new cooler tube fitting and tighten to specification. The same procedure should be followed for transmission fluid leaks between the oil-to-air (OTA) cooler and the cooler tube fittings.

If leakage is found at the manual control lever shaft, install a new seal.

Check for transmission fluid leaking from the end of the extension housing. Leakage can result from a damaged seal, missing garter spring, worn extension bushing, damaged speed sensor O-ring or the output shaft retainer (vehicles equipped with a fixed yoke). Install a new seal assembly as necessary.

Inspect the line pressure plug for leakage. Make sure it is tightened to specification. Refer to SPECIFICATIONS . If tightening the plug does not stop the leak, the case threads and/or plug could be damaged. Remove the plug and inspect the plug and case thread for damage. Repair as necessary.