Man D2862 LE221, Repair Manual

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COMMON RAIL SYSTEM
(13) Fuel line fuel lter – high-pressure pump
bottom
(14) Fuel return line engine end
(14) Fuel return line lter end
(14) Fuel line fuel lter – high-pressure pumps
(14) Fuel line hand pump – gear pumps
Important information
WARNING
The common rail system can be damaged
• All work on components of the common rail system must be performed by specially trained
personnel only
• The engine must be stationary for at least 5 minutes before commencing work in order to enable
depressurisation in the rail, or depressurisation must be checked by means of MAN-cats (desired
value 0)
• Ensure absolute cleanliness in all areas when carrying out all work.
• Before working on the clean side of the fuel system, clean the engine and the engine compartment
(e.g. steam cleaner). The fuel system must be sealed during this process.
• Avoid any moisture whatsoever.
• Do not reuse plugs for the high-pressure lines, rail, injectors or fuel lines, even if they have only
been used once
• Always detach only one fuel line and then immediately plug the fuel line connections and
component connections
WARNING
Residual fuel may run out during removal. Danger of environmental pollution.
• Use a suitable fuel collecting container
WARNING
Component damage due to incorrectly tightened screw/bolt connections
• If impact wrenches are used, these may only be used for pretightening to max. 50% of the
specied tightening torque
• Final tightening must always be performed manually using a torque wrench
Special tools
[46] End plug (GPN 330 L18)
• Plugging the fuel lines
81.96002-0556
[47] End plug
• Plugging the fuel lines
81.96002-0519
[48] End plug
• Plugging the fuel lines
81.96002-0521
142 AE6 3st edition