ARB RD197 - Manual (Page 14)

3 Installing the Air Locker
12
3.1 Re-Mounting the Ring Gear
 Remove the bolts that hold the ring gear in place.
NOTE : AAM 925 & 950 ring gear bolts are usually left hand
threaded.
 Using a plastic or copper hammer, tap in a circle around the ring
gear to separate it from the original differential carrier.
 Apply a thin film of high-pressure grease to the ring gear shoulder
of the Air Locker to prevent seizing.
 Thoroughly clean any thread locking compound or other foreign
matter from the holes of the ring gear, the threads of the ring gear
bolts, and the mating surfaces between the ring gear and the Air
Locker flange.
HINT : Stoning the ring gear mounting face before
installation will remove any high spots around the
threads.
 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.
 Dry the gear and bolt holes with compressed air (if wet).
 Install the ring gear onto the Air Locker by aligning the bolt holes
and then gently tapping it around in a circle with a soft mallet.
Avoid using the bolts to pull down the ring gear as this puts excess
strain on the bolts and the differential flange.
 Apply a thread locking compound to the thread of each ring gear
bolt before inserting it. Do not apply threading compound directly
into the threaded hole as this could prevent the bolt from reaching
its full depth.
 Tighten the ring gear bolts in a star pattern with a torque wrench
according to your vehicle manufacturer’s specified torque.