Mitsubishi 4g63 - Cylinder Head and Valves - Part 3; Valve Spring Installation; Retainer Lock Installation; Cylinder Head Bolt Installation

CYLINDER HEAD AND VALVES
ENGINE OVERHAUL <4G63-Turbo>
11D-42
NOTE: Do not confuse the stem seals for intake
valves with those for exhaust valves.
>>B<< VALVE SPRING INSTALLATION
Install the valve spring whose small diameter is
shown from the rocker arm side.
>>C<< RETAINER LOCK INSTALLATION
Compress the valve spring using the special tool
Valve spring compressor (MD998735 or MD998772),
then install the retainer lock.
>>D<< CYLINDER HEAD BOLT
INSTALLATION
1. When reusing a cylinder head bolt, check that its
nominal length (shank length) is not greater than
the limit. If the limit is exceeded, replace the bolt.
Limit: 99.4 mm
2. Apply engine oil to the threads and washer of the
bolt.
3. Tighten the bolts to 78 ± 2 N⋅m in the indicated
sequence.
NOTE: Use the special tool Cylinder head bolt
wrench (MB991654) to tighten the bolts.
4. Loosen all the bolts completely.
5. Tighten the bolts again to a torque of 20 ± 2 N⋅m
in the indicated sequence.
AK304538
AB
Intake valve stem seal
Colour: Gray
Exhaust valve stem seal
Colour: Grayish green
AK300717
AB
Painted end
AK306003
MD998735
AC
AK202742
MD998772
AD
AK300591AB
Shank length
AK202723
MB991654
AE
AK306004AC
13968
25
7
410
Timing belt side