Arb RD94 Manuel d'utilisateur télécharger pdf (Page 20)

4 Installing the Air Locker

4.7 Final Backlash Checking

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

Figure 11.

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). This value is referred to as the ring and pinion

backlash.

c Rotate the differential center 90° and measure again for accuracy.

Figure 11.

c Refer to your vehicle service manual for the specified maximum

and minimum amounts of backlash. If the backlash is not within the

specifications then the differential will have to be removed and re-

shimmed.

4.7.1 Re-Shimming the Backlash

NOTE : This step is only necessary when adjusting for

incorrect backlash.

c Remove the bearing caps.

c Remove the differential.

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

(Fig.5.) and increase the shim thickness ‘E’ (Fig.9.) by the same

amount. Reverse this step to decrease the backlash.

c Remount the differential as before.

c Check backlash again as before.

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Arb RD94 Manuel d'utilisateur Page 20