Mitsubishi F8QT Automobile Parts User Manual


 
F8QT ENGINE -
Rocker Cover and Cylinder Head
11A-12-3
"
B
A
CYLINDER HEAD INSTALLATION
(1) Select a suitable cylinder head gasket
11
.
(2) Rotate the crankshaft so that the piston of No. 1 cylinder
is positioned a quarter-stroke past TDC.
(3) Fit the cylinder head over the locating dowels.
"
C
A
CYLINDER HEAD BOLT INSTALLATION
(1) When installing the cylinder head bolts, check that the
length of the shank of each bolt (without the washer)
is within the limit value. All the cylinder head bolts must
be renewed as soon as any of them exceeds the permitted
length.
Limit: max. 120.5 mm
(2) Fit the washers.
(3) Lubricate the bolt threads and washers with engine oil.
(4) Insert the cylinder head bolts and fasten them finger-tight.
The cylinder head bolts should be torque-tightened in
three stages.
Tighten in the first stage:
D first to 30 Nm;
D then angle-tighten to 50_ ± 4_ in a singleuninterrupted
movement.
NOTE
Wait at least three minutes to allow the head gasket to
bed down properly.
(5) Now slacken all the bolts completely.
(6) Then tighten to the second stage torque:
D first to 25 Nm;
D then angle-tighten the bolts to 213 _ ± 7_ in a single
uninterrupted movement.
(7) The cylinder head can only be retorqued after letting
the engine warm up to its operating temperature.
Tightening torque for the third stage:
D let the engine warm up (engine cooling fan starts
to turn);
D then angle-tighten the cylinder head bolts to 120 _
± 7_ in a single uninterrupted movement.
PWEE9602
E
July 1996Mitsubishi Motors Corporation
REN0043
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120.5
120.5
REN0045
MB991614
REN0046