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Connecting Rod Bend Inspection - Kawasaki KX450F Service Manual

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Crankshaft
Next, correct the vertical misalignment by either driving a
wedge [A] in between the crank halves or by squeezing
them in a vise, depending on the nature of the misalign-
ment.
Do not hammer the crank half at the point [B].
If flywheel misalignment cannot be corrected by the above
method, replace the crankpin or the crankshaft itself.
Connecting Rod Big End Seizure Inspection
In case of serious seizure with damaged flywheels, the
crankshaft must be replaced.
In case of less serious damage, disassemble the crank-
shaft and replace the crankpin, needle bearing, and con-
necting rod.

Connecting Rod Bend Inspection

Remove the connecting rod.
Select an arbor [A] of the same diameter as the connect-
ing rod big end, and insert the arbor through the connect-
ing rod big end.
Select an arbor [B] of the same diameter as the piston
pin and more than 105 mm (4.13 in.) long, and insert the
arbor through the connecting rod small end.
On a surface plate, set the big-end arbor on a V block [C].
With the connecting rod held vertically, use a height
gauge to measure the difference in the height of the
arbor above the surface plate over a 100 mm (3.94 in.)
length to determine the amount of connecting rod bend.
If connecting rod bend exceeds the service limit, the con-
necting rod must be replaced.
Connecting Rod Bend
Service Limit:
TIR 0.2/100 mm (0.008/3.94 in.)
NOTICE
CRANKSHAFT/TRANSMISSION 9-19

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