24
25
Change of the worn ball valves
All the described operations will have to be done
with the engine switched off.
In order to change the damaged ball valves please follow
this procedure:
• Open the tie-rod (48)
working on the ring
nuts with the key (35)
standard supplied.
• Remove the inspection plugs (41-49) of the valve
groups and the rubber ball valves (42) which are placed
inside.
Replace the ball valves and
mount everything back
fixing tightly the tie-rods.
Replace the gaskets of the inspection plugs
In order to change the damaged valve’s seat please
follow this procedure:
• Open the tie-rods (48)
working on the ring nuts
with the standard key
supplied (35).
• Remove the inspection plugs (41-49) from the valve’s
group and remove the gaskets (66).
Change the gaskets and mount back all the parts
having care to close tightly the ring
nuts.
48
35
41
42
49
48
35
41
49
66
7.2 - CHANGE OF WEAR AND TEAR PARTS BY QUALIFIED PERSONNEL
Summary of Contents for UNI 30 D
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