TOHATSU MX 50D2 Service Manual page 370

Lower Unit
r
q
å Dial Gauge Reading : mm (in)
0.00∼0.18 （0.00∼0.0071）
0.19∼0.28 （0.0075∼0.0110）
（0.0114∼0.0228）
0.29∼0.58
（0.0232∼0.0264）
0.59∼0.67
0.68∼0.83 （0.0268∼0.0327）
0.84∼0.99 （0.0331∼0.0390）
（0.0394∼0.0453）
1.00∼1.15
（0.0457∼0.0516）
1.16∼1.31
1.32∼1.47 （0.0520∼0.0579）
1.48∼1.63 （0.0583∼0.0642）
（0.0646∼0.0705）
1.64∼1.79
（0.0709∼0.0768）
1.80∼1.95
1.96∼2.11 （0.0772∼0.0831）
b
y
t
6-90
e
0¡
w
∫ Shim Thickness : mm (in )
+ means addition of shim/-
means removal of shim
−0.10 （0.0039）
−0.05 （0.0019）
0.00
＋0.05 （0.0019）
＋0.10 （0.0039）
＋0.15 （0.0059）
＋0.20 （0.0078）
＋0.25 （0.0098）
＋0.30 （0.0118）
＋0.35 （0.0137）
＋0.40 （0.0157）
＋0.45 （0.0177）
＋0.50 （0.0196）
Attach backlash measuring tool clamp e to drive shaft.
5.
Turn drive shaft w clockwise / counterclockwise slowly
6.
while pulling it up, and read change of dial gauge
indication.
When measuring, contact dial gauge tip to inside
of V groove located in the clamp ass'y.
Backlash Measuring Tool Clamp e :
P/N. 3B7-72720-0
Dial Gauge r :
Commercially Available Item
Magnetic Stand t :
Commercially Available Item
7. Select shim thickness required based on the change of
dial gauge indication and the table shown.
· Confirm dial gauge reading and adjust backlash
by using thickness of shim selected.
· Measure backlash several times while changing
gear teeth contact position.
· When measuring backlash, make drive shaft
pulling up force equal among the measurements.
· This work can be made easier when the opening
of gear case of propeller shaft side is faced
upward and fixed horizontally with a holder.
Proper Backlash :
0.29 - 0.58 mm (0.0114 - 0.0228 in)
Add shim(s) into gap b between reverse (C) gear t and
8.
bearing y if necessary.
For removal or installation of reverse (C)
gear, refer to;
"Disassembly of Propeller Shaft Housing
Ass'y" or "Assembly of Lower Unit" in
Chapter 6 respectively.
Type of Shims :
0.1 mm (0.0039 in) P/N. 353-64038-0
0.15 mm (0.0059 in) P/N. 353-64037-0
0.3 mm (0.0118 in) P/N. 353-64036-0
CAUTION
2st 50D2 2011
GB