4-8
SHAFT
DRIVE
AND
DIFFERENTIAL
TOOTH
CONTACT
After
backlash adjustment is carried out, the tooth contact must
be checked. Pay attention to the following procedures:
•
Remove
the
secondary driven output shaft assembly from
the
crankcase.
•
Clean
and
degrease
several teeth
of
the secondary driven
bevel gear and apply
a
coating
of
machinist's layout dye
or
paste to teeth.
•
Install the front and rear secondary driven output shafts.
•
Rotate the secondary driven bevel gear several turns in both
directions.
•
Remove
the secondary driven output shafts and inspect the
coated
teeth
of
the secondary drive bevel
gear.
The contact
patch
should
be as
shown in
©, ®
and
®.
•
If tooth contact is found to
be
correct (example
©), go
to the
Final
Assembly
and
Remounting
sections on
p.
4-10 to com-
plete
installation.
©
Incorrect (contact at tooth top)
©
Correct
®
Incorrect (contact at tooth root)
• If
tooth contact
is
found
to be
incorrect (examples
©
and
©), the
shim thickness between
the
secondary drive
bevel gear
and
transmission driven gear must
be
changed
and the tooth contact rechecked until it is correct.
A CAUTION^
Make
sure to check the backlash
after
the
tooth
con-
tact has been adjusted, since it may have changed.
Adjust the
tooth
contact and backlash
until
they
are
both
within
specification. If the correct
tooth
contact
cannot be maintained when adjusting the backlash,
replace the secondary drive and driven bevel gears.
Tooth contact
Shim thickness
Contact at tooth top
©
Increase shims
®
Contact at tooth root
©
Decrease
shims
(§)
©
List
of shims (§D available for the
secondary drive gear. (dT
3
4-10)
Part No.
Shim
thickness (mm)
24935-19B00-025
(Shim
thickness
0.25 mm)
24935-19B00-030
(Shim
thickness
0.30 mm)
24935-19B00-035
(Shim
thickness
0.35 mm)
0.60
24935-19B00-025
(Shim
thickness
0.25 mm)
24935-19B00-030
(Shim
thickness
0.30 mm)
24935-19B00-035
(Shim
thickness
0.35 mm)
0.65
24935-19B00-025
(Shim
thickness
0.25 mm)
24935-19B00-030
(Shim
thickness
0.30 mm)
24935-19B00-035
(Shim
thickness
0.35 mm)
0.70
24935-19B00-025
(Shim
thickness
0.25 mm)
24935-19B00-030
(Shim
thickness
0.30 mm)
24935-19B00-035
(Shim
thickness
0.35 mm)
0.75
24935-19B00-025
(Shim
thickness
0.25 mm)
24935-19B00-030
(Shim
thickness
0.30 mm)
24935-19B00-035
(Shim
thickness
0.35 mm)
0.80
24935-19B00-025
(Shim
thickness
0.25 mm)
24935-19B00-030
(Shim
thickness
0.30 mm)
24935-19B00-035
(Shim
thickness
0.35 mm)
0.85
24935-19B00-090 0.90
24935-19B00-095
0.95
24935-19B00-100 1.00
24935-19B00-105 1.05
24935-19B00-110
1.10
24935-19B00-115
1.15