Leakage Inspection: Notes

WARNING: This page is about a different car, the 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Cab & Chassis. 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
MERCON® SP Automatic Transmission Fluid XT-6-QSP (US); CXT-6-LSP12 (Canada)	MERCON® SP
Automatic Transmission/Power Steering Dye 164-R3701 or equivalent	-

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: Identifying External Sealing Components

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	Fluid level indicator
7	7A228	Fluid filler tube assembly
8	391308-S	Filler tube O-ring
9	7A160	Short fluid inlet tube assembly
10	7005	Case
11	7J149	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 (OSS) 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	Fluid pan drain plug

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

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

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

If the vehicle is equipped with power take-off (PTO), check the sealing gasket at the PTO unit for leaks.

CAUTION: Do not try to stop the 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 line fitting and tighten to specification. The same procedure should be followed for fluid leaks between the oil-to-air cooler transmission remote filter, and the cooler line fittings.

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

Check for 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 Torque Specifications in this article. 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.