ENGINE – Cylinder Head and Valves
11-44
REMOVAL SERVICE POINTS
PRECAUTION FOR REMOVED PARTS
Keep removed parts in order according to the cylinder number
and intake/exhaust.
AA" CYLINDER HEAD BOLTS REMOVAL
Using the special tool, loosen the cylinder head bolts. Loosen
evenly, little by little.
AB" RETAINER LOCK REMOVAL
Store removed valves, springs and other parts, tagged to
indicate their cylinder No. and location for reassembly.
AC" VALVE HANDLING PRECAUTIONS
(1) Sodium reacts violently with water or moisture generation
heat and liberating hydrogen. It must be handled with
utmost care because otherwise the following dangerous
conditions may result:
Loss of eyesight if sodium gets in eyes.
Burns if soduim contact skin.
Fire hazard.
(2) Handling of Soduim-filled Exhaust Valves
Soduim-filled exhaust valves are not dangerous and may
be handled in the same way as ordinary valves unless
they are broken.
Never try to break the valves and expose soduim to the
air. When worn exhaust valves are to be discarded, have
them disposed of by a salvage company equipped with
special disposal system, notifying them that the valves
contain soduim.
Should the exhaust valves be broken, neutralize soduim
using the method described below, and discard the valves
in the same way as ordinary valves.
MB991654
MD998772
MD998735
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