
ENGINE –
Cylinder Head and Valves
11-46
"
B
A
VALVE SPRING INSTALLATION
Direct the valve spring end with identification color toward
the spring retainer.
"
C
A
RETAINER LOCK INSTALLATION
The valve spring, if excessively compressed, causes the
bottom end of the retainer to be in contact with, and damage,
the stem seal.
"
D
A
CYLINDER HEAD BOLT INSTALLATION
(1) When installing the cylinder head bolts, check that the
shank length of each bolt meets the limit. If the limit is
exceeded, replace the bolt.
Limit: Max. 99.4 mm
(2) Apply engine oil to the bolt threads and to the washers.
(3) Using the special tool (MB991654) and according to the
tightening sequence, tighten the bolts to the specified
torque.
Tightening torque: 78 Nm
(4) Loosen all bolts fully.
(5) Retighten the loosened bolts to a torque of 20 Nm in
the specified tightening sequence.
MD998772
MD998735
6EN0782
Shank length
Timing belt side