90-824052R3 JUNE 2002 LOWER UNIT - 6A-43
5. Position lubrication sleeve (if equipped) in drive-
shaft bore.
a
b
c
51870
a - Lubrication Sleeve (if equipped)
b - Tab (MUST align with slot)
c - Slot
NOTE: Late model and Sport Master gear cases DO
NOT use a lubrication sleeve. A larger diameter oil
flow passage way [3/8
″
(9.5mm) vs. 1/4
″
(6.4mm)] is
used to provide oil to the upper driveshaft tapered
bearing.
51726
a
b
a - Late Model Gearcase Without Lubrication Sleeve
b - 3/8″ (9.5mm) Oil Flow Passage
6. Sport Master gear case only: Do not install
driveshaft lower bearing cup until pinion height is
determined.
7. Position pinion gear in gear housing below drive-
shaft bore with teeth of pinion gear meshed with
teeth of forward gear.
8. Insert drive shaft into drive shaft bore while
holding pinion gear. Rotate driveshaft to align
and engage driveshaft splines with pinion gear
splines. Continue to insert driveshaft into gear
housing until driveshaft tapered bearing is
against bearing race.
NOTE: It is recommended that after final pinion depth
is obtained, a new pinion nut be installed. Clean
pinion nut threads with Loctite Primer N (92-59327-1)
before applying Loctite 271.
9. Place a small amount of Loctite 271 onto threads
of pinion gear nut and install flat washer and nut
on driveshaft with flat side of nut away from pinion
gear. Hand tighten pinion nut.
a
c
d
e
b
51867
a - Drive Shaft (rotate to engage splines with pinion gear)
b - Forward Gear Assembly
c - Pinion Gear
d - Washer (located above pinion nut)
e - Pinion Nut [apply Loctite 271 on threads and install with
flat side away from pinion gear]
10. Place shim(s) (retained from disassembly) into
gear housing. If shim(s) were lost or are not
reusable (damaged), start with approximately
0.010″ (0.254mm).
NOTE: Sport Master Only, Lower bearing race
cannot be installed until pinion gear height is set.
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