Differential Shim Selection - Manual Correction

89Ford16

SHOP MANUAL-1989-SECTION 15-21- DIFFERENTIAL-MANUAL 4- AND 5-SPEED TRANSAXLE-DIFFERENTIAL SHIM SELECTION TOOL NUMBER CHANGED

Article No. 89-12A-15

FORD: 1989 ESCORT, TEMPO

LINCOLN-MERCURY: 1989 TOPAZ


ISSUE: The Major Service Operations procedure on pages 15-21-6 and 15-21-7 incorrectly shows the Differential Shim Selection Tool as T83P-4451-AH1.

ACTION: Refer to the pages following this TSB article for the revised Shop Manual pages which show the corrected Tool Number as T83P-4451-B1 in the procedure and the illustrations. This information should be inserted in your 1989 Tempo/Topaz/Escort Shop Manual, pages 15-21-6 and 15-21-7.

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 5800

1989
15-21-6 Differential-Manual 4-and 5-Speed Transaxle




MAJOR SERVICE OPERATIONS (Continued)

3. If removed, install the differential in the clutch housing.




4. Install Height Gauge Spacers T81P-4451-B2 and T83P-4451-AH2 or equivalent on the clutch housing dowels.




5. Position the bearing cup removed from the transaxle case on the differential bearing. Install Differential Shim Selection Tool T83P- 4451-B1 or equivalent over the differential bearing cup.




6. Position the transaxle case on the height gauge spacer and install the four bolts supplied with the tool. Tighten the bolts to 23-28 N-m (17-21 ft.lbs.). Rotate the differential several times to ensure seating of the differential bearing.

1989
15-21-7 Differential-Manual 4-and 5-Speed Transaxle




MAJOR SERVICE OPERATIONS (Continued)

7. Position Gauge Bar T80L-77003-A or equivalent across the shim selection tool. Using a feeler gauge, measure the gap between the gauge bar and the selector tool gauge surface. This measurement can also be made using a depth micrometer.




EXAMPLE

Obtain measurements from three positions around the tool, and take the average of the readings.

Readings:
Inches mm
.014-inch .36 mm
.013-inch .33 mm
.015-inch .38 mm

.042 inch 1.07 mm

Average (shim required)
Inches mm

3/.042-inch = .014-inch 3/1.07 mm - .35 mm

Shim Required
Inches mm
.014-inch .35 mm

NOTE: Shims are available in thicknesses of .30 mm -1.25 mm (.012-.049-inch). Refer to Specifications. If the shim required is not on the chart, select the next thinner shim. Before installing the shim, it should be measured with a micrometer to ensure it is the correct thickness.
8. Install the shim in the transaxle case.