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6-24 ENGINE TOP END
Valves
Valve Clearance Check
•
Refer to Valve Clearance Inspection and Adjustment in
the Periodic Maintenance chapter.
Valve Removal
•
Remove the cylinder head (see Cylinder Head Removal).
•
Remove the valve lifter and shim.
○
Mark and record the valve lifter and shim locations so they
can be installed in their original positions.
•
Using the valve spring compressor assembly, remove the
valve.
Special Tools - Valve Spring Compressor Assembly: 57001
-241 [A]
Valve Spring Compressor Adapter,
22:
57001-1202 [B]
Valve Installation
•
Replace the oil seal with a new one.
•
Apply thin coat of molybdenum disulfide grease to the
valve stem before valve installation.
•
Install the springs so that the closed coil end faces down-
wards.
Valve Spring Paint Color:
EX-Red
IN-Blue
[A] Valve Stem
[B] Oil Seal
[C] Spring Seat
[D] Closed Coil End
[E] Valve Springs (Inner)
[F] Valve Springs (Outer)
[G] Retainer
[H] Split Keepers
Valve Guide Removal
•
Remove:
Valve(seeValveRemoval)
Oil Seal
Spring Seat
•
Heat the area around the valve guide to 120 ∼ 150°C (248
∼ 302°F), and hammer lightly on the valve guide arbor [A]
to remove the guide from the top of the head.
CAUTION
Do not heat the cylinder head with a torch. This will
warp the cylinder head. Soak the cylinder head in
oil and heat the oil.
Special Tool - Valve Guide Arbor, 5: 57001-1203