LOWER UNIT - 6C-1590-817643R1 DECEMBER 1996
Installing Upper Seals
1. Install spiral retaining ring (a) into the inner ring
groove of the upper seal housing.
2. Spread a film of grease around the inside bore of
the seal surface before pressing in the seals.
3. Press in the garter spring seal (b) against the inner
retaining ring as shown. Fill the garter spring cavity
in the seal with grease.
4. Install spiral retaining ring (c) into the outer ring
groove. Align the notched ends of the retaining ring
to straddle the small vent hole drilled in the ring
groove.
5. Press in the outer seal against the retaining ring as
shown.
6. Grease all the seal lips.
7. Grease the two O-ring seals (e) and install then into
the outer ring grooves.
IMPORTANT: The notched
ends of the retaining ring
must straddle this vent hole.
e
c
d
a
b
a - Retaining Ring
b - Spring Seal
c - Retaining Ring
d - Outer Seal
e - O-rings
Installing Drive Shaft Ball Bearing
1. If removed, install the bearing thrust ring (a) into
the groove on the drive shaft.
2. Install collar (b) onto the drive shaft. Press the new
ball bearing (c) onto the drive shaft, pressing
against the inner race only. Press collar (b) over
the thrust ring (a), locking it in its groove. Install
snap ring (d) into drive shaft groove below the
bearing.
c
d
a
b
a
b
c
d
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 bearing and
push the bearing carrier down until it bottoms-out
against the bearing. It may be necessary to lightly
tap bearing carrier onto the bearing 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 rubber
hammer.
a
b
a - Bearing Carrier
b - Drive Shaft
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