Mitsubishi S4Q, User Manual

Page: 33 / 174

33 / 174 Service Manual Mitsubishi SQ-Series diesel engines
Version 08/2004
CYLINDER HEADS AND VALVE
MECHANISM
ENGLISH
ENGINE MAIN PARTS
2. Installing valve and valve spring
1) Put the valve spring and retainer on the valve
guide. Using valve spring pusher (30691
–
04500), compress the valve spring and install
the valve cotters to the valve.
2) Tap the top of the valve with a soft faced
hammer several times to make sure the valve
spring and valve cotters are properly installed.
Figure 37 Installing valve and valve spring
Valve spring pusher
CAUTION
Compressing the valve spring excessively will cause
the retainer to make contact and damage the stem
seal.
Figure 38 Installing valve and valve spring (high-
speed option)
Figure 39 Testing valve cotter installation
Valve spring
pusher