Cleanliness - Renault 2000 Megane Technical Note

CLEANLINESS INSTRUCTIONS WHICH MUST BE FOLLOWED WHEN WORKING ON THE HIGH PRESSURE
DIRECT INJECTION SYSTEM
Risks relating to contamination
The system is very sensitive to contamination. The risks caused by the introduction of pollution are:
– damage to or destruction of the high pressure injection system,
– seizing of a component or a component which is not sealed.
All after-sales operations must be performed under very good cleanliness conditions. This means that no impurities
(particles a few microns in size) have penetrated into the system during removal or into the circuits via the fuel
unions.
The cleanliness principle must be applied from the filter to the injectors.
WHAT ARE THE POLLUTING ELEMENTS?
The elements which pollute are:
– metal or plastic splinters,
– paint,
– fibres:
of cardboard,
!
of brushes,
!
of paper,
!
of clothing,
!
of cloths.
!
– foreign bodies such as hair,
– ambient air,
– etc.
WARNING: it is impossible to clean the engine using a high pressure washer at the risk of damaging connections.
Also the moisture may collect in the connectors and cause electrical connection problems.
INSTRUCTIONS TO BE FOLLOWED BEFORE ANY WORK IS CARRIED OUT ON THE INJECTION SYSTEM
Ensure that you have plugs for the unions to be opened (bag of plugs sold by the Parts Department).
!
Plugs are to be used once only. After use, they must be thrown away (once used they are soiled and cleaning is
not sufficient to make them reusable).
Unused plugs must be thrown away.
Ensure that you have the resealable plastic bags for storing removed parts. There is less risk of parts stored in this
!
way being subjected to impurities. The bags can be used only once, and once used they must be thrown away.
Ensure that lint-free cleaning wipes are available (cloths with SODICAM part numbers). The use of conventional
!
cloth or paper is prohibited. In fact, these create lint and may contaminate the system's fuel circuit. A lint-free
cloth should only be used once.
DIESEL EQUIPMENT

Cleanliness

Cleanliness
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