Mariner Mercury 105/140 JET, Service Manual

Page: 538 / 797

6A-42 - LOWER UNIT 90-824052R3 JUNE 2002
5. Place propeller shaft into hole in center of bearing
driver cup.
6. Install bearing carrier assembly over propeller
shaft and lower it into gear housing. Bearing
carrier acts as a pilot to assure proper bearing
race alignment.
7. Thread a nut onto propeller shaft to protect
propeller shaft threads.
8. Use a mallet to drive propeller shaft against
bearing driver cup until tapered bearing race is
seated against shim(s).
a
c
b
51867
a - Tapered Bearing Race
b - Bearing Driver Cup (91-87120)
c - Shim(s)
9. Remove nut from propeller shaft, then remove
bearing carrier and propeller shaft from gear
housing. Lift bearing driver cup out of gear
housing.
10. Apply a light coat of oil on tapered bearing race,
then place forward gear assembly into forward
bearing race.
Driveshaft and Pinion Gear
REASSEMBLY/INSTALLATION
1. Apply a light coat of Quicksilver Super Duty Gear
Lubricant on l.D. of driveshaft tapered bearing.
Sport Master only - Apply High Pressure
Grease (such as Chicago Manufacturing and
Distributing Lube #3) to the I.D. of both bearings.
2. Thread a used pinion nut onto end of drive shaft.
Leave approximately 1/16
″
(2mm) of nut threads
exposed. Drive shaft threads MUST NOT extend
beyond nut or thread damage could result while
pressing.
3. Place bearing over driveshaft.
Sport Master only - Both bearings can be
installed on the driveshaft in one operation. Place
the smaller bottom bearing over the driveshaft
with the numbers on the bearing facing the top of
the shaft. Place the larger top bearing exactly
opposite by having the numbers facing the pinion
end of the shaft. While holding bearings in place,
invert the driveshaft and place assembly in a
press.
4. Using an old driveshaft bearing inner race or
other suitable mandrel (which applies pressing
force on center bearing race only), press
bearing(s) onto shaft until seated.
a
b
c
d
e
Illustration on Left is for all gear cases except
Sport Master. Right illustration is for Sport
Master
a - Used Pinion Nut
b - Driveshaft
c - Tapered Bearing (s)
d - Old Bearing Inner Race
e - Universal Puller Plate