Chevrolet 1988 Light Duty Truck Repair Manual page 201

DANA REAR AXLES 4B5-9
8. R e co rd th e re a d in g at th e p o in t of g re a te s t
d e fle c tio n (w hen th e d ia l in d ic a to r n e e d le is
centered between movement to the left and to the
right).
• This reading indicates the am ount of shims
needed for a nom inal pinion s ettin g. The
pinion m arking may change the pinion depth
by adding or deleting shims from the nominal
pinion setting.
• A positive ( + ) pinion marking indicates that the
distance between the ring gear centerline and the
pin io n head m ust in cre a se by th e n u m b e r of
thousandths marked on the pinion. This means that
the shim pack will decrease by the same num ber of
thousandths.
• A negative (-) pinion m arking indicates that the
distance between the ring gear centerline and the
pinion head m ust d ecrease by the n u m ber of
thousandths marked on the pinion. This m eans that
the shim pack will increase by the same num ber of
thousandths.
• A pinion etched zero (0) will use the nom inal setting
as determ ined in this procedure.
9. Measure each shim separately with a microm eter
and add them together to obtain the total shim pack
thickness. If a baffle (5) or slinger is used, these
must also be measured and included in the shim
pack (figure 27).
PINION INSTALLATION
"►*- Install or C on n ect
Tools Required:
J 7818 Front Pinion Bearing Cup Installer
J 5590 Rear Pinion Bearing Cone Installer
D-111 Cup Installer (Miller)
C-4171 Handle (Miller)
J 8092 Handle
J 8614-01 Pinion Flange Remover
1. Place the required am ount of shim s (and baffle if
used) in the inner bearing bore.