Gilera Runner RST 50 SP, Service Station Manual, Page: 93 / 183

Inspecting the crankshaft alignment
With the specific tool shown check that the eccen-
tricity of the surfaces of diam. « A »-« B »-« C » are
within 0.03 mm. (reading limit on the dial gauge);
in addition, check the eccentricity of diam. « D », for
which a maximum reading of 0.02 mm is permitted.
In the case where eccentricity is not much above
prescribed levels, straighten the shaft by acting
on the counterweights with a shim or tighten them
in a clamp (with an aluminium bushing) as re-
quired..
Specific tooling
020335Y Magnetic support for dial gauge
020074Y Support base for checking crankshaft
alignment
Refitting the crankshaft
- Position the transmission side half crankcase on
two wooden supports
- Using a thermal gun, heat the bearing seat to
about 120°
- Firmly insert the crankshaft until the bearing rea-
ches the end-of-stroke stop
Runner RST 50 SP
Engine
ENG - 93