MR293R190_41































VALUES AND SETTINGS
Cylinder head tightening
07
1st

tightening to 3 daN.m.
2nd  tightening (angle) : 7 daN.m.
Wait for at least three minutes.
Slacken bolt by bolt until they are completely free,
then tighten to 2 daN,m.
2nd tightening (angle) : 123° Ä… 2°.
CYLINDER HEAD GASKET WITH ASBESTOS
CYLINDER HEAD TIGHTENING PROCEDURE
This operation is carried out when cold, when the
cylinder head is refitted, and there is no other rea-
son for it to be carried out.
Grease the bolt threads and underneath the bolt
heads with engine oil.
REMINDER: In order to tighten the bolts correctly,
remove any oil from the cylinder head securing
holes using a syringe.
Tighten the cylinder head in the order shown be-
low:
F ENGINE (diesel)
1st

tightening to 3 daN.m.
2nd tightening (angle) : 50° Ä… 4 °.
Wait for at least three minutes.
Slacken bolt by bolt until they are completely free,
then tighten to 2.5 daN,m.
2nd tightening (angle) : 213° Ä… 7°.
The cylinder head is not retightened except on
the F8Q Turbo.
-    Special features of engines F8Q 610, 740, 744,
768.
-    Following an increase in engine temperature
(operation of the fan).
-    Wait until the engine returns to ambient tem-
perature.
-    In the recommended order, again tighten bolts
1-2, 3-4, 5-6, 7-8, 9-10, angle  120° Ä… 7°.
CYLINDER HEAD GASKET WITHOUT ASBESTOS
CYLINDER HEAD TIGHTENING PROCEDURE
All of the bolts must be changed automatically af-
ter removal.
Grease the bolt threads and underneath the bolt
heads with engine oil.
REMINDER: In order to tighten the bolts correctly,
remove any oil from the cylinder head securing
holes using a syringe.
Tighten the cylinder head in the order shown be-
low:
81528-1S
81528-1S
07-20