Ace Sports Maxxam 150 2R, Руководство по обслуживанию

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VALVE AND VALVE SPRING
VALVE AND VALVE SPRING REMOVAL
• Remove
c
ylinder head.
• Remove
v
alve cotter
p
in
and c
ompressor.
• Remove
u
pper
s
pring
r
ace.
• Remove
v
alve
s
pring.
• Remove lower
s
pring
r
ace.
• Remove
v
alve stem oil seal.
• Remove
v
alve.
VALVE AND VALVE SPRING INSPECTION
• Inspect the valve
for bending or burning
.
• Inspect
for smooth action
between the valve and the valve guide.
• Measure the outer diameter of the valve stem.
Service Limit 4.94mm
• Measure the free length of the inner and outer valve spring.
Valve Inlet valve Exhaust valve
Inner spring 31.2mm 31.2mm
Outer spring 34.1mm 34.1mm
VALVE AND VALVE SPRING INSTALLATION
• Mount the spring retainer, valve guide oil seal.
• After applying oil on the valve stem, mount it into the valve guide.
• Mount the inner and outer valve springs.
• Mount the valve locker with a spring compressor.
• Tap on the valve gently two or three times with a rubber hammer to make the valve and the valve
lock connect well.
The removed parts should be placed in order to
avoid confusion. It’s better to place the intake valve
parts and exhaust valve parts separately.
It is recommended to replace the valve guide oil seal with a new one.
When mounting, the twisting direction of the inner and outer springs must be opposite.
Do n
ot damage the valve.