Yamaha F150B, Service Manual

Page: 352 / 458

8-73
LOWR
Lower unit
Selecting the pinion shim (T3)
See “Selecting the pinion shim (T3)” (8-33).
Pinion shim (T3) selection table
See “Pinion shim (T3) selection table” (8-36).
Selecting the propeller shaft shim
(T4)
• Use heat-resistant gloves, otherwise
burns could result.
• Remove any flammable substances,
such as gasoline and oil, around the
working area to avoid the risk of fire.
• Heat the propeller shaft housing in a
well-ventilated area.
1. Install the original shim(s) (T4), and then
measure the free play.
TIP:
If the original shim(s) (T4) cannot be identi-
fied, measure the free play without any
shim(s).
2. When the measurement is out of the
specification, select the shim(s) (T4)
using “Propeller shaft shim (T4) selection
table” (8-75).
TIP:
No shim (T4) adjustment is required if the
measurement falls within specification.
Example:
When the measurement is 0.72 mm, the
need for increasing or decreasing the shim is
0.40 mm. This means 0.40 mm thickness
must be added to the present shim thickness.
3. Remove the O-ring from the propeller
shaft housing.
4. Heat the installation area of the taper
roller bearing outer race in the propeller
shaft housing with a gas torch, and then
disassemble the propeller shaft housing
assembly.
NOTICE: When heating the
propeller shaft housing, heat the
entire installation area evenly.
Otherwise, the propeller shaft housing
could be damaged.
5. Install the shim(s) (T4)
c
selected in
step 2 and the thrust bearing
d
.
Magnet base B
a
: 90890-06844
Dial gauge set
b
: 90890-01252
Propeller shaft free play:
0.25–0.35 mm (0.0098–0.0138 in)
a
b
Available shim thicknesses:
0.10, 0.12, 0.15, 0.18, 0.30, 0.40, and
0.50 mm
c
d