Yamaha 40V Manuel de service télécharger pdf (Page 136)

6-21

LOWR

SHIMMING

Forward gear shim

NOTE:

Find forward gear shim thickness (T1) by

selecting shims until the specified measure-

ment (M) is obtained with the special tool.

1. Calculate:

● Specified measurement (M)

NOTE:

● F is the deviation of the lower case dimen-

sion from standard. It is stamped on the

trim tab mounting surface of the lower

case in 0.01 mm units. If the F mark is

missing or unreadable, assume an F mark

of “0”, and check the backlash when the

unit is assembled.

● If the F value is negative (–), then subtract

the F value from the measurement.

Example:

If F mark is “+5”, then M = 0.06 mm + (+5)/100

= 0.06 + 0.05 mm

= 0.11 mm

If F mark is “–5”, then M = 0.06 mm + (–5)/100

= 0.06 – 0.05 mm

= 0.01 mm

2. Install:

● Shimming gauge

● Bearing 1

● Shim(s) 2

NOTE:

● Tighten the nut four turns after contact

with the spring.

● If the original shim(s) is unavailable, start

with a 0.50 mm shim.

Specified measurement (M) =

0.06 mm + F/100

Base plate:

YB-34446-1............................. 3

Compression spring:

YB-34446-3............................. 4

Press plate:

YB-34446-4............................. 5

Gauge pin:

YB-34446-7............................. 6

1 2 ... 131 132 133 134 135 136 137 138 139 140 141 ... 223 224

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Yamaha 40V Manuel de service Page 136

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