G424 Service Manual Base Engine Service Procedure144
6EN0652
6EN0782
6EN0694
C Retainer lock installation
The valve spring, if excessively compressed, causes the
bottom end of the retainer to be in contact.
D Cylinder head bolt installation
(1) When installing the cylinder head bolts, check that the
shank length of each bolt meets the limit is exceeded,
replace the bolt.
Standard value: 120.4 mm (4.740 in.)
(2) Apply engine oil to the bolt threads and washers.
(3) According to the tightening sequence, tighten the bolts to
8.0 kg•m (57.9 lb•ft)[80 N•m].
(4) Loosen the bolts completely.
(5) Torque the bolts to 2.0 kg•m (14.5 lb•ft)[20 N•m].
(6) Tighten the bolts 1/4 turns (90°) more.
(7) Tighten the bolts 1/4 turns (90°) additionally.
Caution:
1) If the bolt is turned less than 90°, proper fastening
performance may not be expected. When tightening the
bolt, therefore, be careful to give a sufficient turn to it.
2) If the bolt is over tightened, loosen the bolt completely and
then retighten it by repeating the tightening procedure
from step (1).
MD998772
Shank length
10 4 2 5 7
8613 9
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