TOHATSU TLDI MD 115A SERIES Service Manual page 225

Attach backlash measuring tool clamp w to drive shaft.
5.
Turn drive shaft q 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 w :
P/N. 3B7-72720-0
Dial Gauge q :
Commercially Available Item
Magnetic Stand e :
Commercially Available Item
7. Select shim thickness required based on the change of
dial gauge indication and the table shown.
Proper Backlash :
0.24 - 0.48 mm (0.0094 - 0.0189 in)
· 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.
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. 3B7-64037-0
0.15 mm (0.0059 in) P/N. 3B7-64036-0
TLDI 115A 2007
CAUTION
e
Dial Gauge Reading : mm (in)
0.00 - 0.11 (0.00 - 0.0043)
0.12 - 0.23 (0.0048 - 0.0091)
0.24 - 0.48 (0.0095 - 0.0189)
0.49 - 0.59 (0.0193 - 0.0232)
0.60 - 0.74 (0.0236 - 0.0291)
0.75 - 0.89 (0.0295 - 0.0351)
0.90 - 1.04 (0.0355 - 0.0410)
1.05 - 1.20 (0.0414 - 0.0473)
1.21 - 1.35 (0.0477 - 0.0532)
1.36 - 1.50 (0.0536 - 0.0591)
1.51 - 1.65 (0.0595 - 0.0650)
1.66 - 1.81 (0.0654 - 0.0713)
1.82 - 1.96 (0.0717 - 0.0772)
1.97 - 2.11 (0.0776 - 0.0831)
2.12 - 2.26 (0.0835 - 0.0890)
b
y
t
0
q
90°
w
Shim Thickness : mm (in )
+ means addition of shim/-
means removal of shim
-0.10 (0.0040)
-0.05 (0.0020)
0.00
+0.05 (0.0020)
+0.10 (0.0039)
+0.15 (0.0059)
6
+0.20 (0.0079)
+0.25 (0.0100)
+0.30 (0.0118)
+0.35 (0.0138)
+0.40 (0.0157)
+0.45 (0.0177)
+0.50 (0.0197)
+0.55 (0.0217)
+0.60 (0.0240)
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