A/T - 4EAT Fluid Leak From Cooler Line

89Ford30

LEAK-AUTOMATIC TRANSMISSION FLUID-4EAT TRANSAXLE-COOLER LINE IN THERMO SWITCH BOX AREA

TRANSAXLE-4EAT-ATF LEAK FROM COOLER LINE IN THERMO SWITCH BOX AREA

Article No. 89-19-11

FORD: 1989 PROBE


This TSB article is being republished in its entirety to correct the service part numbers for the Oil Pipe and the Thermo Switch Box.

ISSUE: Automatic transaxle fluid may leak from the cooler line in the thermo switch box area. The leak may be caused by a dented or rough washer seat surface on the thermo switch box which prevents a good seal.

ACTION: Install a new inlet tube and attaching hardware. Refer to the following procedure for service details.

Figure 1:

Figure 2:

Figure 3:

INSPECTION PROCEDURE

1. Remove the flexible air tube and resonance chamber between the vane air flow meter and the intake manifold, Figure 1.

2. Locate the thermo switch box on top of the 4EAT transaxle, Figure 2.

3. Inspect the transaxle cooler lines at the thermo switch box for leaks, Figure 3.

Figure 4:

INSTALLATION PROCEDURE

1. Remove the shift cable hold-down and shield, Figure 4.

Figure 3:

2. Remove the transaxle inlet fluid line. The inlet line is the longer of the two lines, Figure 3.

3. Take apart the U-shaped oil hose, connector pipe and oil pipe, Figure 3.

4. Check the surface of the thermo switch box washer seat for dents or nicks. If the surface is dented or marred, replace the existing thermo switch box with a new design thermo switch box.

Figure 2:

Figure 5:

5. Install the new "banjo" style fluid inlet line, Figure 2.

6. Tighten all fasteners to the torque specifications shown in Figure 5.

7. Reinstall the shift cable hold-down and shield.

8. Reinstall the resonance chamber and air intake tube.

PART NUMBER PART NAME CLASS

E92Z-7B473-A Oil Pipe C
E43Z-6K757-C Connector Bolt - Pkg. of 4 C
995621400 Packing Washers - Pkg. of 10 S
E92Z-7N138-A Thermo Switch Box C
995621600 Packing Washers - Pkg. of 12 S
376428-S8 Hose Clamp - Pkg. of 4 S

OTHER APPLICABLE ARTICLES: None
SUPERSEDES: 89-18-6, Date 09/07/89
WARRANTY STATUS: Eligible Under Basic Warranty Coverage

OPERATION DESCRIPTION TIME
891911A Install Oil Inlet Line 0.7 Hr.

DEALER CODING
BASIC PART NO. CONDITION CODE
7N138 77
OASIS CODES: 5970