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N.B.
ENCH ENDS ARE NOT RECTIFIABLE.
Specific tooling
020074Y Crankshaft aligning tool
Characteristic
Alignment check: Max admissible displacement:
A
=
0,15mm
B
=
0,01 mm
C
=
0,01 mm
D
=
0,10 mm
I
NSPECTING THE CRANKCASE HALVES
S C
G
C
- Before checking the crankcase, carefully clean all lubrica-
tion channels and surfaces.
- For the transmission side half-crankcase, especially clean
the compartment and the channels of the oil pump, the by-
pass duct, the bench brasses and the cooling jet on the trans-
mission side, see figure.
As already described in the Lubrication chapter, it is especia-
lly important that the by-pass housing is free from wear that
may impair the proper sealing of the lubrication pressure
adjustment piston.
- For the half-crankcase on the transmission side, especia-
lly clean the lubrication channels of the bench brasses, the
head oil feeding jet channel, the drainage channel for the oil
guard on the flywheel side.
- Check that the surfaces are free from dents or deformatio-
ns, with special attention to the crankcase coupling and the
crankcase-cylinder surfaces.
- Any defects in the crankcase gasket or on the surfaces in-
dicated in the figure can cause pressurised oil leaks, there-
by affecting the connecting rod and bench brass lubrication
pressure.
- Check that the driving shaft axial clearance containment
surfaces are free from wear. For the dimensional check, refer
to the instructions relating to the axial clearance and dimen-
sions check on the driving shaft.
134
C S
S
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