CYLINDER HEAD AND VALVES
ENGINE OVERHAUL
11B-38
REMOVAL SERVICE POINTS
<<A>> RETAINER LOCK REMOVAL
AK502741
AC
MB992089
MD998735
CAUTION
Be careful not to allow retainer holder C to inter-
fere with the wall of the tappet hole and to dam-
age it.
Use a special tool to compress the valve spring and
to remove the retainer lock.
• Valve spring compressor (MD998735)
• Retainer holder C (MB992089)
NOTE: Store removed parts such as valves and
springs with tags describing cylinder No. and
installed position attached for reassembly.
<<B>> VALVE STEM SEAL REMOVAL
AK502782
AC
Valve stem seal
MB992085
Use special tool Valve stem seal pliers (MB992085)
to firmly pinch the base (larger external shape) of the
stem seal and twist it right and left for pulling out.
INSTALLATION SERVICE POINTS
>>A<< VALVE STEM SEAL INSTALLA-
TION
CAUTION
• The valve stem seal must not be reused.
• Do not damage the tappet wall during assem-
bly.
• Be sure to use a special tool to install the
valve stem seal. Poor installation causes oil
loss via valve guides.
•
AK503378
AD
If oil is not applied, the valve stem seal may
rise to the surface after it is press fitted.
1. Apply a thin coat of engine oil to a new valve stem
seal.
AK502742
AC
MD998737
2. Use special tool Valve stem seal installer
(MD998737) to press fit the valve stem seal into
the valve guide with the valve stem used as a
guide.
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