Specifications

41
The bearing cup should be examined for rust, pitting,
scuffing, cracks or other damage.
After determining the gap between the cover and
the machined surface on the cylinder, determine the
shim thickness as follows to result in the required
.002 - .007 (.051 - .178 mm) crankshaft end play.
Example:
.003'’ .076 mm Clearance between cover and
cylinder
- .002'’ .051 mm Required end play
.005'’ .127 mm Shim thickness required
+ .003'’ .076 mm Add half above figure for
thickness required to
compensate for gasket
compression
.008'’ .203 mm Use shim gaskets that total this
amount.
Shim gaskets are available in .004/.005” (.102/.127
mm) and .005/.007” (.127/.178 mm) thickness.
Insert an oil seal in the cover. Position the .010 (.254
mm) spacer if required. Position the shim gaskets
and O ring and place the cover on the cylinder. Use
an oil seal sleeve to protect the oil seal. Secure the
cover with the hex head bolts and TORQUE to
specifications. Rotate the crankshaft and test for
freedom of movement, end play and radial play.
Knocking noise in an engine may at times be traced
to excessive radial crankshaft play. If this is noted,
check the cover shim gaskets. Correct by adding
or removing as required.
The bearing cup is removed by tapping the edge
beneath the oil seal with a light hammer and flat
punch. Press in a new cup until it bottoms on the
shoulder. The bearing cup must be pressed in square,
use an arbor press.
Reinstall cylinder cover using a new gasket and torque
to specifications.
OIL SEAL
REMOVE BY TAPPING
ON INSIDE EDGE WITH
FLAT PUNCH
PLACE SMALL
AMOUNT OF
GREASE ON
INNER EDGE
OF SEAL
BEARING CUP PRESSED INTO
BOTTOM ON SHOULDER
COVER
SHIM
GASKETS
.010 (.254 mm)
SPACER
AS REQUIRED