70
Lubricating system
6
4. Knock the edge of the pump housing
against a piece of wood to make the
pump piston slide out of the casing.
5. Check the wear of the pin (G) against
which the cam curve of the pump
drive runs.
If worn, the pin should be removed
from the housing, turned half and
pushed back in its place.
Assembly, mod. 625/630/670
Clean and check all parts for wear and
damage.
Assembly of the oil pump takes place in
reverse order to dismantling.
Place the two washers with the aid of a
little grease in the pump housing.
NOTE!
The steel washer should be closest to the
spring.
Lubricate all parts in the pump with chain
oil.
Press the spring together and put the
pump gear in position.
Put the shaft into the pump housing (the
flat milled end first) through the spring
and washers.
G
Dismantle the pump piston by tapping the
pump housing on a wooden block.
Attach the two washers with grease to the
pump housing. The steel washer should
be closest to the spring.
Put the pump gear in position and push
the shaft into the pump housing.
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