Yamaha YFM400FWA 2000 5GH3-AE1, Руководство по обслуживанию

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ENG
MIDDLE GEAR
4.Inspect:
●
O-ring
Damage
→
Replace.
●
Bearings
Pitting/damage
→
Replace.
5.Check:
●
U-joint movement
Roughness
→
Replace U-joint.
MIDDLE DRIVE AND DRIVEN GEAR SHIM
SELECTION
When the drive and driven gear, bearing
housing assembly and/or crankcase
replaced, be sure to adjust the gear shim
1 .
1.Select:
●
Middle drive gear shim 1
●
Middle driven gear shim 2
*********************************
Middle drive and driven gear shim selection
steps:
●
Position middle drive and driven gear by
using shims
1 and 2 with their respec-
tive thickness calculated from information
marked on crankcase, bearing housing
and drive gear end.
1 Shim thickness “A”
2 Shim thickness “B”
●
To find shim thickness “A” use following
formula:
Where:
a
= a numeral (usually a decimal num-
ber) on the bearing housing is either
added to or subtracted from “10.5”.
b
= drive pinion gear to driven pinion
gear center distance (considered
constant).
c
= a numeral (usually a decimal num-
ber) on the right crankcase specifies
a thickness of “66”.
Middle drive pinion gear shim thickness:
“A” =
c
–
a
–
b