Arb RD158 Manuel d'utilisateur télécharger pdf (Page 18)

4 Installing the Air Locker

c Hold the bearing cup in place on the ring gear side.

c Holding the master shim and tapered roller bearing cup in place at

each end, insert and hold the Air Locker into the differential housing

with the seal housing tube pointing straight out of the housing.

c Install one bearing cap on the ring gear side. The bearing cap on

the seal housing side will need to be drilled or slotted as clearance

for the seal housing tube.

c Install the bearing cap bolts finger tight.

c Push the Air Locker hard across to the ring gear side, and measure

the gap (end float) between the master shim and the housing with a

feeler gauge.

c Consult your vehicle manufacturer’s service manual to determine

the carrier bearing pre-load amount specified for your vehicle.

c Add the specified pre-load amount to the measurement taken with

the feeler gauge to determine a shim amount for ‘E’ in Figure 8.

PRE-LOAD + END FLOAT = SHIM PACK

c Select suitable shims from the supplied shim kit to make up a shim

pack of this thickness.

c Remove the Air Locker and assemble the shim pack onto the seal

housing spigot behind the master shim (Figure 8.).

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

NOTE : If the carrier is too difficult to install with the added

shim pack then the spreader tension may need to be

increased. Do not spread the housing more than

0.50mm [0.020”].

c Reinstall the Air Locker as before (i.e., with only one bearing cap).

c Release all spreader tension.

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.

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Arb RD158 Manuel d'utilisateur Page 18