3-40
ATV-0104
Correcting Tooth Contact
NOTE: If tooth contact pattern is comparable to
the correct pattern illustration, no correction is
necessary.
If tooth contact pattern is comparable to an incorrect
pattern, correct tooth contact according to the follow-
ing chart.
NOTE: To correct tooth contact, steps 1 and 2
(with NOTE) of “Correcting Backlash” must be fol-
lowed and the above “Tooth Contact/Shim Correc-
tion” chart must be consulted.
CRANKSHAFT ASSEMBLY
NOTE: The crankshaft and connecting rod is a
non-serviceable assembly. If any component is
out of specification, the assembly must be
replaced.
Measuring Connecting Rod
(Small End Inside Diameter)
1. Insert a snap gauge into the upper connecting rod
small end bore; then remove the gauge and mea-
sure it with micrometer.
CC290D
2. Maximum diameter must not exceed specifica-
tions.
Measuring Connecting Rod
(Small End Deflection)
1. Place the crankshaft on a set of V-blocks and
mount a dial indicator and base on the surface
plate. Position the indicator contact point against
the center of the connecting rod small end journal.
2. Zero the indicator and push the small end of the
connecting rod away from the dial indicator.
3. Maximum deflection must not exceed specifica-
tions.
Measuring Connecting Rod
(Big End Side-to-Side)
1. Push the lower end of the connecting rod to one
side of the crankshaft journal.
2. Using a feeler gauge, measure the gap between the
connecting rod and crankshaft journal.
CC289D
3. Acceptable gap range must be within specifica-
tions.
Measuring Crankshaft (Runout)
1. Place the crankshaft on a set of V blocks.
2. Mount a dial indicator and base on the surface
plate. Position the indicator contact at point 1 of
the crankshaft.
Tooth Contact
Shim Correction
Contacts at Top
Decrease Shim Thickness
Contacts at Root
Increase Shim Thickness
CAUTION
After correcting tooth contact, backlash must again be
checked and corrected (if necessary). Continue the
correcting backlash/correcting tooth contact proce-
dures until they are both within tolerance values.
Next
Back
Section
Table of Contents
Manual
Table of Contents