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A
B
C
D
E
F
G
H
I
L
M
N
O
P
22
A
B
C
E
D
F
G
H
EAD DISASSEMBLY
N.B.
The procedures described below refer to the
disassembly of only one head, but they are valid
for both.
To disassemble the heads and their components work
as follows:
•
Position tool "A" (code 10 90 72 00) on the upper plate
and in the middle of the valve head that you want to
remove;
•
Screw down the tool screw until it is tightened, then
hammer the tool head (where it works on the upper
plate) using a mallet, so that the two half-cones "B"
get detached from the upper plate "C";
•
Once the two half-cones are detached "B", screw
down until the two above mentioned half cones can
be slided out from the valve seats; unscrew the tool
and remove it from the head;
•
Slide out the upper plate "C";
•
Remove the inside spring "D";
•
Remove the outside spring "E";
•
Remove the lower plate "F" and, if necessary, the
shimming washers;
•
Remove the valve "G" from inside the head.
E
NGINE
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