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Connectingrod Bend; Connecting Rod Twist; Connecting Rod Big End Side Clearance - Kawasaki ZR-7S Service Manual

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7-14 CRANKSHAFTITRANSMISSION
Crankshaft/Connecting
Rod
ConnectingRod Bend
.
Remove the connecting
rod big end bearing inserts, and
reinstall the connecting rod big end cap.
.
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 [8] of the same diameter as the piston
pin and at least 100 mm (4 in.) long, and insert the arbor
through the connecting rod small end.
.
On a surface plate, set the big-end arbor on 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 (4 in.)
length to determine the amount of connecting rod bend.
Connecting
Rod Bend
Standard:
0.21100 mm (0.0079/4
in.)
*If connecting rod bend exceeds the service limit, the con-
necting rod must be replaced.
Connecting
Rod Twist
. With the big-end arbor [A] still on V block [C], hold the
connecting rod horizontally and measure the amount that
the small end arbor [8] varies from being parallel with the
surface plate over a 100 mm (4 in.) length of the arbor to
determine the amount of connecting rod twist.
Connecting Rod Twist
Standard:
0.21100mm (0.0079/4
in.)
*
If connecting rod twist exceeds the service limit, the con-
necting rod must be replaced.
Connecting Rod Big End Side Clearance
.Insert
a thickness gauge [A] between the big end [8] and
either crank web to determine clearance.
Connecting
Rod Big End Side Clearance
Standard:
0.15 - 0.30 mm (0.0059- 0.0118in.)
Service Limit:
0.48 mm (0.0157
in.)
*
If clearance exceeds the service limit, replace the con-
necting rod with a new one and then check clearance
again. If clearance is too large after connecting rod re-
placement, the crankshaft must be replaced also.
GI 05040651
C
GI05040751
C

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