Arb RD110 Manuel d'utilisateur télécharger pdf (Page 25)

3 Installing the Air Locker

3.12 Checking the Backlash

c Refer to your vehicle manufacturer’s service manual for the

specified maximum and minimum amounts of backlash. If the

backlash measured here is not within the specifications then the

differential will have to be re-shimmed.

c Tighten all bearing cap bolts with a torque wrench to the torque

specified in your vehicle manufacturer’s service manual.

c Set a plunge type dial indicator on one of the ring gear teeth as in

Figure 15.

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.

c Record the average of all measurements.

NOTE : This step is only necessary when adjusting for

incorrect backlash.

c Remove the bearing caps.

c Remove the shim packs from both ends of differential.

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

(Fig.4.) and increase the shim thickness ‘E’ (Fig.6.) by the same

amount. Reverse this step to increase the backlash.

c Remount the differential as before.

c Check backlash again as before.

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Arb RD110 Manuel d'utilisateur Page 25