3 Installing the Air Locker
14
The thickness of the shim pack ‘
B
’ should make the distance ‘
C
’ on the
Air Locker
closely match the distance
‘A
’ on the existing differential
(within 0.1mm [0.004”] ).
Use the following calculation to find the desired thickness of ‘
B
’:
A – C = B
(Replacement Shim Pac
k)
HINT :
If your calculations are correct then the following
equation will also be true:
A – B – C =
ZERO
Select shims from the shim kit supplied with your
Air Locker
to
make the thickness ‘
B
’ as determined above.
Place this shim pack between the ARB master shim and the
bearing cup.
Re-measure the new distance ‘
C
’ from the
Air Locker
(now
including the shim pack ‘
B
’) to make sure that it matches ‘
A
’ on the
original differential.
NOTE : NEVER machine the Air Locker.
