5-30 ENGINE TOP END
Valve Clearance Inspection
Refer to the Valve Clearance Inspection in the Periodic
Valve Clearance Adjustment
Refer to the Valve Clearance Adjustment in the Periodic
Remove cylinder head (see Cylinder Head Removal).
Remove the valve lifter and shim.
Mark and record the valve lifter and shim locations so that
they can be installed in their original positions.
Using the valve spring compressor assembly, remove the
Special Tools - Valve Spring Compressor Assembly [A]:
Valve Spring Compressor Adapter, 21 [B]:
Replace the oil seal with a new one.
Apply engine oil to the oil seal lip.
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 (the side painted in green faces upwards).
Valve Stem [A]
Oil Seal [B]
Spring Seat [C]
Closed Coil End [D]
Valve Spring [E]
Side Painted in Red [F]
Split Keepers [H]
Valve Guide Removal
Valve (see Valve Removal)
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.
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