77
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 measure
it with micrometer.
CC290D
2. Maximum diameter must not exceed specifications.
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. Posi-
tion 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 con-
necting rod away from the dial indicator.
3. Maximum deflection must not exceed specifications.
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 specifications.
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 crank-
shaft.
H1-003A
3. Zero the indicator and rotate the crankshaft slowly.
4. Maximum runout must not exceed specifications.
NOTE: Proceed to check runout on the other end
of the crankshaft by positioning the indicator con-
tact at point 2 and following steps 3-4.
Measuring Crankshaft
(Web-to-Web)
1. Using a calipers, measure the distance from the out-
side edge of one web to the outside edge of the other
web.
CAUTION
After correcting tooth contact, backlash must again be
checked and corrected (if necessary). Continue the cor-
recting backlash/correcting tooth contact procedures
until they are both within tolerance values.
CAUTION
Care should be taken to support the connecting rod
when rotating the crankshaft.