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29) Determination of forward (A) gear
backlash
Backlash Measuring Tool Kit :
P/N. 369-72740-0
Backlash Measuring Tool Ass'y 1 :
P/N. 369-72730-0
Measuring Tool Set Piece 2 :
P/N. 369-72727-0
Clamp A :
P/N. 3B7-72720-0
Dial Gauge Plate :
P/N. 3B7-72729-0
Perform measurement of backlash between
forward (A) gear and pinion (B) gear with propeller
shaft housing, propeller shaft and reverse (C)
gear removed from gear case.
Install pump case 4 to gear case, and assemble
1.
backlash measuring tool 1 as illustrated.
· Fix gear case with vice.
· C l e a n d r i v e s h a f t w i t h n e w r a g b e f o re
assembling the tool.
· Assemble all parts of pump case except
impeller and key, and tighten to specified
torque.
· Perform measurement of backlash between
forward (A) gear and pinion (B) gear with
propeller shaft housing, propeller shaft and
reverse (C) gear removed from gear case.
Proper Backlash Obtained from Gauge Reading :
0.16 - 0.49mm (0.0063 - 0.0193 in)
Sizes of Adjusting Shims :
For Pinion (B) Gear Side : 0.1, 0.15mm
4st 4/5/6 2020
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2
4
5
1
1
6
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