head bolt sequence?
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Joined: Oct 2012
Posts: 637
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From: Keller
clk63, cls55, ml63, (w210) E55
AR01.30-P-5800-07B Tightening instructions for cylinder head bolts
Cylinder head
Cylinder head
Special Tools
Tightening pattern/bolt assignment Left and right cylinder head M 112
Tightening pattern/bolt assignment
Left and right cylinder head M 112
1-8 Collar bolt M11
a Combination bolts M8x50 (to timing case cover)
b Combination bolts M8x30 (to timing case cover)
Tightening instructions for left and right cylinder heads M 112
Use wrench bit to tighten cylinder head bolts.
Observe sequence, per the tightening pattern.
If the tightening torque is exceeded on a cylinder head bolt, unscrew the cylinder head bolt, inspect shank length of the cylinder head bolt in question (replace bolt if necessary) and tighten again fully, beginning with stage 1.
Cylinder head bolts must not be retightened.
Tightening diagram/bolt assignment Left and right cylinder head M 113
1 to 10 Collar bolt M11
a Combination bolts M8x50 (to timing case cover)
b Combination bolts M8x30 (to timing case cover)
Tightening instructions for left and right cylinder heads M 113
Use wrench bit to tighten cylinder head bolts.
Observe sequence, per the tightening pattern.
If the tightening torque is exceeded on a cylinder head bolt, unscrew the cylinder head bolt, inspect shank length of the cylinder head bolt in question (replace bolt if necessary) and tighten again fully, beginning with stage 1.
Cylinder head bolts must not be retightened.
Cylinder head
Cylinder head
Special Tools
Tightening pattern/bolt assignment Left and right cylinder head M 112
Tightening pattern/bolt assignment
Left and right cylinder head M 112
1-8 Collar bolt M11
a Combination bolts M8x50 (to timing case cover)
b Combination bolts M8x30 (to timing case cover)
Tightening instructions for left and right cylinder heads M 112
Use wrench bit to tighten cylinder head bolts.
Observe sequence, per the tightening pattern.
If the tightening torque is exceeded on a cylinder head bolt, unscrew the cylinder head bolt, inspect shank length of the cylinder head bolt in question (replace bolt if necessary) and tighten again fully, beginning with stage 1.
Cylinder head bolts must not be retightened.
Tightening diagram/bolt assignment Left and right cylinder head M 113
1 to 10 Collar bolt M11
a Combination bolts M8x50 (to timing case cover)
b Combination bolts M8x30 (to timing case cover)
Tightening instructions for left and right cylinder heads M 113
Use wrench bit to tighten cylinder head bolts.
Observe sequence, per the tightening pattern.
If the tightening torque is exceeded on a cylinder head bolt, unscrew the cylinder head bolt, inspect shank length of the cylinder head bolt in question (replace bolt if necessary) and tighten again fully, beginning with stage 1.
Cylinder head bolts must not be retightened.
thanks!
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