Arb RD138 Manuel d'utilisateur télécharger pdf (Page 11)

3 Installing the Air Locker

3.1 Mounting the Ring Gear

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 Thoroughly clean any thread locking compound or other foreign

matter from the holes of the ring gear, the threads of the ring gear

bolts, the mating surfaces of the ring gear and the Air Locker

flange.

HINT : Rubbing the ring gear mounting face with a flat oil

stone before installation will remove any high spots

around the threads.

c Heat the ring gear to between 80 and 100°C (175 - 212°F) in hot

water or in an oven to slightly expand the gear and facilitate

assembly.

NOTE : NEVER HEAT GEARS WITH A FLAME! This could

damage the hardened surface of the gear and result in

premature wear or failure.

c Dry the gear and tapped holes with compressed air (if wet).

c Apply a thin film of high-pressure grease to the ring gear shoulder

of the Air Locker to prevent seizing.

c Install the ring gear onto the Air Locker by aligning the tapped holes

and then gently tapping it around in a circle with a soft mallet or

hammer. Avoid using the bolts to pull the ring gear down as this

puts excess strain on the bolts and the differential flange.

c Apply a thread locking compound to the thread of each ring gear

bolt before inserting it. Do not apply locking compound directly into

the threaded hole as this could prevent the bolt from reaching its

full depth.

NOTE : On some models, the crown wheel bolts cannot be

reused and should therefore be replaced. Refer to

your vehicle manufacturer’s service manual for

details.

c Tighten the ring gear bolts in a star pattern with a torque wrench

(Fig.4.) set to your vehicle manufacturer’s specified torque.

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Arb RD138 Manuel d'utilisateur Page 11