Man D2862 LE221, Repair Manual

Page: 226 / 420

CYLINDER HEAD
Service products
White T assembly paste..................................................................................................... 09.16012-0122
Important information
WARNING
Component damage due to leaking cylinder head gasket
• Do not reuse old cylinder head bolts, even if they have only been used once
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
• Avoid any moisture whatsoever.
• Always t new rail connections once the old ones have been unfastened
• Do not reuse plugs for high-pressure lines, the rail or the injectors, even if they have only been
used once
• Follow the sequence described when tightening injectors, high-pressure lines, the rail and rail
connections
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
[68] Socket, size 22
• Unscrewing and tightening the cylinder head bolts
in conjunction with:
• Torque multiplier i = 1 : 3.3 [69]
• Support [70]
• Torque angle gauge [71]
• Holding device [72]
• Cylinder head bolt [73]
• Connecting pin [74]
• Rubber ring, 42 mm [75]
•
•
Socket [77]
80.99612-0024
[69] Torque multiplier i = 1 : 3.3
• Unscrewing and tightening the cylinder head bolts
in conjunction with:
• Socket, size 22 [68]
• Support [70]
• Torque angle gauge [71]
• Holding device [72]
• Cylinder head bolt [73]
• Connecting pin [74]
• Rubber ring, 42 mm [75]
•
•
Socket [77]
80.99619-0006
224 AE6 3st edition