Ring and Pinion Set
Rings gears and pinions are supplied in matched sets
only
. Matching numbers are etched on both the pinion
and ring gear (Fig. 37).
The mounting distance from the bottom of the differen-
t
ial bearing bores to the button end of the pinion is
1.210 in.
On the button end of each pinion there is a plus (+) or
m
inus (–) number, or a (0) number. This number indi-
cates the best running position for each particular gear
set. This dimension is controlled by the shimming be-
hind the inner bearing cup.
For example, if a pinion is etched +3, this pinion would
r
equire 0.003 in. less than a pinion etched “0". This
means that by removing shims, the mounting distance
of the pinion is increased to 1.213 in., which is just what
+3 indicates. Or if a pinion is etched –3, we would want
to add 0.003 in. shims, the mounting distance of the the
pinion was decreased to 1.207 in., which is just what a
–3 etching indicates.
If a new gear set is being used, notice the (+) or (–)
et
ching on both the old and new pinion and adjust the
thickness of the new shim pack to compensate for the
difference of these two numbers.
For example: If the old pinion reads +2 and the new
pini
on is –2, add .004 in. shims to the original shim pack.
Figure 37
Reelmaster
®
5100-D Page 6 - 15 Repairs
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