APRILIA MSS Mana GT ABS Service Station Manual page 215

MSS Mana GT ABS
CHANNEL IS FITTED WITH A SHUTTER JET; THIS GIVES A "LOW PRESSURE" HEAD LUBRI-
CATION. THIS CHOICE HAS BEEN MADE TO REDUCE THE OIL TEMPERATURE IN THE SUMP.
Jet clogging impairs head lubrication and the timing mechanisms.
A jet failure causes a drop in lubrication pressure for the main bushings and connecting rod.
- Check the coupling surfaces for scratches or deformation, paying special attention to the cylinder -
crankcase surfaces and the crankcase halves coupling surfaces.
- Defects in the crankcase coupling gasket or the surfaces can cause a drop in the oil pressure and
affect the lubricating pressure.
- Check that the surfaces limiting the crankshaft axial clearance show no signs of wear. To measure
and check sizes follow the procedure described previously for checking crankshaft axial clearance and
dimensions
Inspecting the crankshaft components
Crankshaft alignment
Specific tooling
020335Y Dial gauge magnetic support
Specification
MAXIMUM OFF-LINE ALLOWED
A =
B =
C =
D =
Desc./Quantity
0.15 mm
0.010 mm
0.010 mm
0.10 mm
ENG - 215
Engine