186007243 - 1042A70 LEFT CYLINDER OF CNG CYLINDER UNIT R R (BIPOWER)

Removing ( Refitting ) Position the vehicle on a lift.Proceed with draining the high pressure circuit following the instructions in the specific operation    Op. 1042A02 C.N.G. - FUEL SYSTEM SAFETY CHECK    Op. 1042E60 CNG CYLINDER UNIT PROTECTION SEAL - R R
Before disconnecting the left side cylinder, mark its exact position in relation to the body, the retaining collars and the central cylinder.
1. Disconnect the electrical connection of the methane cut-off solenoid on the left side cylinder.
DescriptionConnector
Methane supply solenoid    See L60 METHANE SUPPLY SOLENOID
2. Disconnect fittings (2a) and (2b), then remove the left side cylinder connection pipe with the right side cylinder.3. Unscrew the methane intake pipe fitting on the single-acting valve from the union.
Arrange the cylinder support tool on a hydraulic column lift able to take the weight of the cylinder.
DescriptionCode
Support for CNG cylinders1.870.732.000
1. Position the tool for supporting the cylinder during the removal operation beneath the left side cylinder.
DescriptionCode
Support for CNG cylinders1.870.732.000
2. Undo retaining nuts (2a), recover the retaining bushes and springs (2b) on the outer part of the cylinder retaining collars (2c).3. Lower the hydraulic lift and simultaneously turn the cylinder retaining collars hinged on the inner side. Release the cylinder from the retaining collars and remove from its seat on the body.With the aid of a second operator, remove the cylinder from the support tool and arrange on suitable stands.
It is absolutely forbidden to remove the solenoid assembly from the CNG cylinders. In the case of solenoid failure, it is only possible to perform the dismantle/rebuild procedure.
    Op. 1042A20 INJECTION SYSTEM SOLENOID ON CYLINDER R R
In the case of methane cylinders that require servicing every 5 years, connect the relevant certified CUNA centres (only for Italy), which will supply a new set of overhauled cylinders complete with solenoids, inspection certificate and new plates showing the expiry date. In Italy, a list of service centres has been distributed to the Service Network in a specific publication entited "3/5-yearly fuel system servicing and inspection"
Refitting ( Removing ) With the aid of a second operator, position the cylinder on the support tool.
DescriptionCode
Support for CNG cylinders1.870.732.000
Raise the tool, turn and insert the retaining collars between the cylinder and tool and position the cylinder in its underbody housing compartment.Secure the cylinder retaining collars by doing up the clips and bushes and then tightening the retaining nuts to the specified torque.Remove the cylinder support tool.Connect the fitting of the CNG inlet pipe from the union to the left side cylinder single-acting valve.Position the pipe connecting the left side cylinder connection pipe to the right side cylinder and tighten the connectors to the specified torque.Connect the electrical connection of the methane cut-off solenoid on the left side cylinder.
DescriptionConnector
Methane supply solenoid    See L60 METHANE SUPPLY SOLENOID
Move the CNG cut-off solenoids to open position by hand and check system is efficient.Connect the Examiner diagnostic equipment in the "Active Diagnosis" ambient, select and carry out "Gas solenoid valve relay" item in order to allow the opening of the solenoid valves and the renewal of the CNG system operating pressure; read the pressure value on the sensor located on the pressure reduction unit in the engine compartment which should be greater than or equal to 14 bar, otherwise it will not be possible to switch from petrol to methane.    Op. 1042A06 C.N.G. - FUEL SYSTEM CHECK FOR ANY LEAKS USING ELECTRONIC DETECTOR FOLLOWING OPERATIONS    Op. 1042E60 CNG CYLINDER UNIT PROTECTION SEAL - R R