Operation CHARM: Car repair manuals for everyone.

Depth Gauge Check




Depth Gauge Check






1. NOTE: If any of the gauge surfaces become nicked, the high spots must be removed with a medium india oilstone to make sure there will be no erroneous readings.

Refer to chart shown below for the correct tools for the particular axles.






2. Install the oil baffle in the inner bearing cup bore in the carrier.






3. NOTE: Prior to installing pinion bearing cups into aluminum or magnesium housings, a dry graphite lubricant such as Lubrikote Type A-1040 CR (Mealy Industrial Lubricants) or equivalent should be applied to the bearing cup bore to prevent metal particles from being picked up as the cup is pressed into the bore.

Install inner and outer pinion cups with Threaded Draw Bar T75T-1176-A, Pinion Bearing Cup Replacer T60K-4616-A and Pinion Bearing Cup Replacer T71P-4616-A.

4. Place a new inner pinion bearing over the proper aligning adapter and insert into the pinion bearing retainer.

5. Place the outer differential pinion bearing (new) into the drive pinion bearing cup in the carrier and assemble the handle onto the screw and hand tighten. Note the 3/8-inch square drive in the handle to be used for obtaining the proper pinion bearing preload.

6. Center the proper gauge tube into the differential bearing bore. Install the bearing caps and tighten to 64-91 Nm (47-67 lb-ft).

7. To preload the differential pinion bearing, tighten the handle to 1.7-3.9 Nm (15-35 lb-in).

8. Using a feeler gauge tool, select the thickest feeler shim that will enter between the gauge tube and the gauge block.






9. NOTE: The feeler gauge fit between the gauge tube and the gauge block should have a slight drag-type feeling.

Insert the feeler gauge directly along the gauge block. Verify correct reading.

10. NOTE: If the service pinion gear is marked with a plus (+) reading, this amount must be subtracted from the thickness dimension obtained in Steps 8 and 9. (Example: +2 [+ 0.002]).

If the service pinion gear is marked with a minus (-) reading, this amount must be added to the thickness dimension obtained in Step 8 and 9. (Example: -2 [-0.002]). In addition, use same new inner differential pinion bearing as in the previous steps. After the correct feeler gauge feel is obtained, check the reading. This is the thickness of the shim required providing that, upon inspection of the service pinion gear, there are no markings.






11. Measure shim with a micrometer to verify the slinger size. Place the shim on the pinion and press on the bearing using suitable pinion bearing replacer and Axle Bearing/Seal Plate T75L-1165-B as shown.

12. Lubricate the ends of outer pinion bearing rollers with High Temperature 4x4 Front Axle and Wheel Bearing Grease E8TZ-19590-A or equivalent meeting Ford specification ESA-M1C198-A.