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5.7
Accessibility to the interior of the combustion head
In order to reach inside the combustion head (Fig. 13) proceed as
follows:
disconnect the electrical wiring related to oil pump/servomo-
tor, air servomotor and gas pressure switch;
disconnect the leverage for test 1) movement;
unscrew the 4 x fixing screws 2);
release the cable of pilot electrode 3);
release the ignition pilot 4) retainer;
remove the screw/gas pressure test point 5) of the com-
bustion head;
unscrew the under part of the elbow 6) until it comes free
of its slot;
D9424
5.8
Position of electrodes
Place the electrode on the ignition pilot observing
the dimensions specified in Fig. 14.
WARNING
Installation
disconnect
connectors 8).
extract the internal part 7) of the combustion head.
WARNING
4
2
1
2
0
18.5
- 2
Diffuser
17
GB
the
oil
pipes
by
unscrewing
While unscrewing, some fuel may leak out.
5
3
7
6
8
71.5
± 1
Electrode
the
two
Fig. 13
D9218
Fig. 14
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