Repair Manual

10
10 - 32
ENGINE AND LOWER ENGINE UNITS
Dismount the tilters platform.
Compress the valves springs by means of the
MOT 382 compressing device.
Take out the lock half cotters,release the
spring,take out the upper tray,the spring and the
lower tray.
Place the parts in order so that they may be
mounted back in the same place where they have
been dismounted from.
Remove the valves support plate,take out the
valves and set them in order.
Wash,clean and air blow the new cylinder
head.
Check the presence of the lubricating channels and valves state.
Perform the lapping of the valves on the cylinder head guiding ( this operation is also to be
performed when replacing the valves).
Mount the valves in the cylinder head and place the MOT 320 valves support plate.
Place in their previous positions:
- sealing gaskets of the valves shafts;
- the lower valve heads ;
- the valve springs;
- half cotters.
NOTE:
The valve springs are identical both for inlet and outlet.The springs are mounted
with the close coils towards the cylinder head.The end with close coils is marked with
green paint.
DISMOUNTING - MOUNTING
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