Installing Drive Shaft Ball Bearings; Installing Drive Shaft - Mercury 75 Service Manual

Installing Drive Shaft Ball Bearings

1. If removed, install the bearing thrust ring (a) into
the groove on the drive shaft.
2. Press new ball bearings (b) onto the drive shaft,
pressing against the inner races only. Press
bearings against the thrust ring, locking it in its
groove. Install snap ring (c) into drive shaft below
the lower bearing.
a
b
c
a - Thrust Ring
b - Ball Bearings
c - Snap Ring
6B-18 - LOWER UNIT
b
a
b
c

Installing Drive Shaft

1. Lubricate the seals and inside bore of the bearing
carrier (a).
2. Place the drive shaft ("b" impeller end facing up)
into a vise.
3. Heat the bearing carrier (a) until it feels warm to
the touch.
4. Place the bearing carrier (a) onto the drive shaft.
Square up the inner bore with the ball bearings
and push the bearing carrier down until it bot-
toms-out against the bearing. It may be neces-
sary to lightly tap bearing carrier onto the bear-
ings using a rubber hammer.
NOTE: Only a light pressing force is needed to press
on the bearing carrier. It may be necessary to lightly
tap the bearing carrier onto the bearing using a rub-
ber hammer.
a
a - Bearing Carrier
b - Drive Shaft
90-830234R3 DECEMBER 1997
b