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ENGINE TOP END 5-31
Valves
Valve Clearance Inspection
•
Refer to the Valve Clearance Inspection in the Periodic
Maintenance chapter (see Valve Clearance Inspection 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 [A]:
57001-241
Adapter,
24 [B]: 57001-1586
Valve Installation
CAUTION
Do not lap the exhaust valve to the exhaust valve
seat, using the grinding compound. It will come off
oxide film treated surface of the valve.
•
Replace the oil seal with a new one.
•
Apply a 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 Stem [A]
Oil Seal [B]
Spring Seat [C]
Closed Coil End [D]
Valve Spring [E]:
EX-Purple Paint
IN-Green Paint
Retainer [F]
Split Keepers [G]
Valve Guide Removal
•
Remove:
Valve (see Valve Removal)
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, 4.5: 57001-1331
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