Iveco NEW DAILY, Instructions Manual

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18
NEW DAILY
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DAILY CNG AND CNG WITH "RECOVERY MODE"
DAILY CNG AND CNG WITH "RECOVERY MODE"
B.3
SYSTEM INTERVENTIONS
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Printed 603.95.789
–
1 Ed. - Base 02/2014
117666
Figure 17
●
With the specific wrench 99355018 (1) unscrew and remove the VBE valve (3) from the cylinder (2) .
Refitting
To refit, carry out the removal operations in reverse order, observing the following instructions:
●
The protection caps of VBE valves must not be removed in order to avoid damage to the valve during assembly. Never use
pneumatic drivers or any other equipment which may damage the valve body and thus affect its functionality;
●
if the cylinder has been removed from the vehicle, immobilise it in the vertical position with its neck uppermost;
●
Wrap the thread of the valve shank with 2-3 layers of Teflon tape;
●
Manually screw the valve in by several turns. Next, using a specific wrench in combination with a torque wrench, tighten to a
torque of 270
±
10 Nm.
Note While doing so, take care not to damage the VBE valve's fuse plate with the wrench 99355018.
Repairs on pipes and fittings
If there is a gas leak from the pipe or from the fittings, the entire pipe must be replaced. The pipe is not supplied with the fittings
which must be selected separately.
●
Remove the pipe to be replaced together with its end fittings.
●
Check the integrity of the new pipe, pre-shape it in the same way as the one being replaced and insert the new fittings and
sealing rings into its end.
●
Fit the pipe inserting its ends into the seats of the components to be connected and make sure they fit all the way in.
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To avoid pre-tensioning, always check the alignment of the end of the pipe with the fittings.
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Fit and screw in the nuts of the fittings by hand and then tighten them to the prescribed torque. For EMER unions, follow the
procedure described elsewhere.
●
Fit the securing brackets, making sure not to stress the pipe.
●
Restore the system operation by carrying out a hydraulic seal test as indicated in the instructions at the beginning of the
chapter.