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Output shaft, pinion

Output shaft, pinion

To remove


1. Undo the circlip and remove the ring gear. Use gloves so as not to hurt your hands on the teeth.


2. If the bearings on the idler gear are to be changed, measure the rolling torque as illustrated and make a note of this. Use 83 90 130 Dynamometer and a piece of string.


3. Tap out the lugs from the lock nut.


4. Fix the shaft in a padded vice and remove the nut.


5. Press the output shaft out of the pinion using 87 92 210 Support, differential bearing in a hydraulic press. Hold the shaft so that it does not fall to the ground. Mark the bearing race with a felt-tip marker so it can be refitted in the same position.


6. Remove the retaining sleeve.


7. If necessary, tap the bearing races out of the idler gear using a hammer and drift.


8. Remove the inner conical roller bearing using 87 91 832 Puller, internal Ø= 63 mm . Rotate the shaft a number of times while tightening the tool. Fit 87 91 642 Basic tool and use an M10 nut as support. Clean all parts thoroughly.



Fitting


1. Press bearing onto the pinion shaft. Lubricate with automatic transmission fluid. Use 87 91 204 Sleeve, bearing race .


2. Press in the bearing race on one side of the idler gear towards the inner circlip. Use 87 91 204 Sleeve, bearing race and the old bearing race in between. Press in the other bearing race in the same way.


3. Fit a new retaining sleeve.


4. Fit the idler gear. Lubricate the bearings with ATF.


5. Fit the conical bearing by carefully moving it towards the spacer ring. Use 87 91 204 Sleeve, bearing race .


6. Carefully press in the pinion with 87 91 204 Sleeve, bearing race .


7. Press the bearing race onto the output shaft. Fit the bearing in the same position as previously.


8. Turn several turns to allow the bearings to settle. Carefully tighten a new nut to the correct preload. Refer to the illustration. The preload for new bearings: 5.5 - 13.5 N (1.2 - 3 lbf). Lock the nut. Preload for old bearings: See note made during removal.


9. Turn the planetary gear over and fit the ring gear. Squeeze the circlip and let the gear fall into place.


Important

Check that the circlip engages the groove in the idler gear.