Arb RD142 Manuel d'utilisateur télécharger pdf (Page 15)

3 Installing the Air Locker

3.5 Checking the Backlash

 Set a depth indicator on one of the ring gear teeth. (Fig.7.)

 While supporting the pinion gear by holding the drive shaft flange,

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.

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

 Refer to your vehicle service manual for the specified maximum

and minimum amounts of backlash.

IMPORTANT:

It is critical to set up bearing pre-load when a differential is

installed. Improper pre-load will result in undue bearing wear,

increased stresses in the differential center, increased running

noise, and ultimately, ring and pinion gear damage.

 Adjust the backlash and pre-load using an adjuster nut wrench to

tighten or loosen the adjuster nuts as required. (Refer to your

vehicle service manual.)

 Recheck backlash as before, repeating this procedure until

backlash is within the specified amount.

 Tighten the bearing cap bolts with a torque wrench to the torque

specified in your vehicle manufacturer’s service manual.

Figure 7.

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Arb RD142 Manuel d'utilisateur Page 15