Adjusting the main gear bearings (Sierra)

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Main gear pinion with tapered bearings and deformable spacer sleeve



1 – outer tapered bearing,

1 – outer tapered bearing,
2 – deformable spacer sleeve


1. Using tools 15.033 and 15.074, remove the outer ring of the outer bearing of the main gear pinion from the rear axle housing (in the case of a 6.5" axle, use centering tool 15.068).

2. Install a new outer ring of the outer bearing of the main gear pinion using tool 15.033.

3. Remove the outer ring of the inner bearing in the same manner.

4. Install a new outer race of the inner bearing together with a new 2 mm thick gasket using tool 15.083 (and also tool 15.068 in the case of a 6.5" axle).

5. Using a suitable puller, remove the inner tapered bearing (inner race and rollers) from the final drive pinion and remove the spacer sleeve.

6. Install a new inner tapered bearing along with a new 1mm thick shim located between the bearing and the final drive pinion.

7. Lubricate the tapered pinion bearings with gearbox oil.

8. Insert the gear into the housing, install the spacer sleeve and outer tapered bearing on the gear.

9. Screw in the bearing fastening nut and tighten it using a 36 mm offset open-end wrench and…


9. Screw in the bearing fastening nut and tighten it using a 36 mm offset open-end wrench and device 15.073. While tightening the nut, measure the torque of the main gear pinion using dynamometer 15.041, located in device 15.073.

10. The bearing mounting nut should be tightened in such a way as to achieve the required torque of resistance for turning the gear (see subsection 7.1).

This publication was borrowed from the website: FORDBOOK.ru






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