Arb RD115 Manuel d'utilisateur télécharger pdf (Page 11)

3 Bench Measurement

3.1 Measurement for Pre-Load Shimming

When fitting an ARB Air Locker, a replacement bearing and variable

shim pack (supplied) are used on the right hand side (opposite the ring

gear) in order to achieve the correct ring and pinion backlash and

carrier bearing pre-load once the Air Locker has been installed.

Because of this, the original shims and bearing from this side will not

be reused.

The original bearing type and shim type are used on the left hand (ring

gear) side of the Air Locker, however, in order to reproduce a similar

backlash and pre-load to that of your existing differential,

measurements need to be taken so that the correct shim thickness

can be determined for this side.

c Secure the differential to a work bench.

c Remove the bolts that hold the ring gear in place.

c Using a plastic or copper hammer, tap in a circle around the ring

gear to separate it from the differential carrier.

c Remove the original bearings and shims from the differential carrier

using a bearing puller.

NOTE : Keep the shims separated so that they can be

identified as to which end of the differential they came

from.

c Using a caliper or similarly accurate measurement method

(i.e., able to take accurate measurements within 0.04mm [0.0015”]),

measure the distance from the bearing shoulder to the ring gear

mounting face (shown as ‘A’ in Figure 4.) and record this

measurement as ‘A’.

c Measure the thickness of the shim pack removed from the ring gear

side of the differential carrier (shown as ‘B’ in Figure 4.).and record

this measurement as ‘B’.

c Measure the distance from the Air Locker bearing shoulder to the

ring gear mounting face (shown as ‘C’ in Figure 5.) and record this

measurement as ‘C’.

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Arb RD115 Manuel d'utilisateur Page 11