Technical data

C
rankshaft
Remove Crankshaft
17
The outer race of the straight roller bearing on
the timing gear side remains in the crankcase
and can be removed with the aid of a press
In order to remove the bearing rings which have
been shrunk on to the crankshaft (35) heat the
crankshaft on a heating plate or with a sufficiently
large gas burner rapidly to about 70 to 80
o
C
After removal of the M8 cylinder head screws,
remove the counterweights (36).
Set the crankshaft on a solid support and loosen
bearing race by a blow to the crankshaft.
Repair Data for Crankshaft Crank Pins
Crank pins must not become convex upon regrinding. A concave shape of from 0.01 to 0.02 mm in diameter
in the mid portion of length is allowable.
Crank pin nominal diameter (D) 42 mm
Crank pin diameter undersize (DU) 41.5 mm
Total play when worn out max
0.15mm
-0.060
+0.074
-0.060
-0.074