Leaktightness test of natural gas system

AR07.54-P-0001MRC

Leaktightness test of natural gas system

1.7.15

Model

212 with engine 274.9

with code 924 (Bivalent natural gas drive)

1

Gas cylinder 1

2

Gas cylinder 2

3

Gas cylinder 3

4

Gas fill line

45

Fuel filler neck

75

Fuel tank

N3/10

ME-SFI [ME] control unit

N118/2

CNG control unit

Y107/2

Pressure regulating unit

16

Stop plug

17

High-pressure connection

18

Low-pressure connection

Y107/2

Pressure regulating unit

Y107/2b1

Gas high-pressure sensor

Y107/2y1

Pressure regulating valve

9

Charge air manifold

21

Gas distribution rail

B17/9

Charge air temperature sensor downstream of throttle valve

B18/6

GAS low pressure and temperature sensor

B28/7

Pressure sensor downstream of throttle valve

Y106/1

Gas injection valve, cylinder 1

Y106/2

Gas injection valve, cylinder 2

Y106/3

Gas injection valve, cylinder 3

Y106/4

Gas injection valve, cylinder 4

 

Remove/install

 Danger !

Risk of explosion due to escaping combustible gas or overheating of gas cylinders.Risk of injury caused by burns to skin and eyes. Risk of frostbite to body parts caused by escaping gas and by touching components near the valves when emptying gas cylinders. Risk of poisoning or suffocation caused by inhaling gas.

Remove any sources of ignition.
Protective clothing, safety gloves and safety glasses must always be worn.
Ensure that the work area is adequately ventilated.
When working on vehicles at ambient temperatures over 60 °C, all gas cylinders must be removed.

AS00.00-Z-0018-01A

 Danger !

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A



Notes on working on natural gas powered vehicles

AH00.10-P-1000-06A

Only perform operation steps 1 and 2 for leak test of the natural gas components in the engine compartment

1

Remove engine cover

2

Remove lower engine compartment paneling

AR61.20-P-1105EW

Only perform operation step 3 for leak test of the natural gas components in trunk

3

Remove trims in trunk

Model 212.0/1

AR68.30-P-4600EW

Only perform operation step 4 and 5 for leak test of the natural gas components on the undercarriage

4

Remove covers under the gas tank system on undercarriage

AR47.10-P-0050-01EN

5

Remove fender liner in right rear wheel arch

6

Check natural gas system for leaktightness

AR07.54-P-0001-02AN

 The leak test includes all components of the natural gas plant.

Leak location spray LUBRION article no. 626.04

*BR00.45-Z-1005-03A

7

Install in the reverse order

Repair materials

Number

Designation

Order number

BR00.45-Z-1005-03A

Leak location spray LUBRION article no. 626.04

WIMMER CHEMOTECHNIK
Riedener Weg 50B
82319 STARNBERG, BAYERN
Telephone: (08151) 739981
Fax: (08151) 739982
www.lubrion.com