Arb RD85 Manuel d'utilisateur télécharger pdf (Page 19)

4 Installing the Air Locker

4.5 Approximating the Backlash for Tube Position

If the backlash is not close enough to the specified amount, the tube

position cannot be accurately measured to modify the bearing cap for

tube clearance. This must be checked before hand.

c Set a depth indicator on one of the ring gear teeth as in figure 8.

c While supporting the pinion gear by holding the drive shaft, rotate

the differential in both directions while observing the maximum

variation in depth from the indicator (i.e., the highest value minus

the lowest value).

c Make sure backlash is less than 0.5mm.

NOTE : This backlash value is for the tube position only and

will not be used for final assembly.

Figure 8.

4.5.1 Re-Shimming the Backlash

NOTE : This step is only necessary when adjusting for

incorrect backlash.

c Remove the bearing cap.

c Spread the differential housing again (Refer to section 2.6).

c Remove the differential.

c To increase the amount of backlash, reduce the shim thickness ‘D’.

(Fig. 4.) and increase the shim thickness ‘E’ the same amount.

Reverse this step to decrease the backlash.

c Remount the differential as before.

c Release spreader tension.

c Re-check backlash.

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Arb RD85 Manuel d'utilisateur Page 19