Replacement and Assembly
REPLACEMENT1. REPLACE VALVE GUIDE BUSHINGS
a. Gradually heat the cylinder head to 80 - 100°C (176 - 212 °F).
b. Using SST and a hammer, tap out the guide bushing.
SST 09201-01055,09950-70010(09951-07100)
c. Using a caliper gauge, measure the bushing bore diameter of the cylinder head.
d. Select a new guide bushing (STD or O/S 0.05). If the bushing bore diameter of the cylinder head is greater than 10.306 mm (0.4057 inch), machine the bushing bore to the following dimension:
10.335 - 10.356 mm (0.4069 - 0.4077 inch) If the bushing bore diameter of the cylinder head is greater than 10.356 mm (0.4077 inch), replace the cylinder head.
HINT: Different the bushings are used for the intake and exhaust
.
e. Gradually heat the cylinder head to 80 - 100°C (176 - 212° F).
f. Using SST and a hammer, tap in a new guide bushing to the specified protrusion height.
Protrusion height:
SST 09201-01055,09950-70010(09951-07100)
g. Using a sharp 5.5 mm reamer, ream the guide bushing to obtain the standard specified clearance between the guide bushing and valve stem.
2. REPLACE SPARK PLUG TUBE GASKETS
a. Bend the 4 ventilation case claw installed on the cylinder head cover to an angle of 90° or more.
b. Using a screwdriver, pry out the gasket.
NOTICE: Be careful not to damage the cylinder head cover, Tape the screwdriver tip.
c. Using SST and a hammer, tap in a new gasket until its surface is flush with the upper edge of the cylinder head cover.
SST 09950-60010(09551-00240,09951-00440, 09952-06010), 09950-70010 (09951-07100)
NOTICE: Be careful of the installation direction.
d. Apply a light coat of MP grease to the gasket lip.
e. Return the ventilation case claw to its original position.
REASSEMBLY
HINT: Thoroughly clean all parts to be assembled. Before installing the parts, apply new engine oil to all sliding and rotating surfaces. Replace all gaskets and oil seals with new ones.
1. INSTALL SPARK PLUG TUBES
HINT: When using a new cylinder head, spark plug tubes must be installed.
a. Apply adhesive to the end of the spark plug tube.
Adhesive: Part No. 08833-00070, THREE BOND 1324 or equivalent
b. Using a wooden block and hammer, tap in a new spark tube until there is 48.4 - 49.6 mm (1.906 - 1.953 inch) protruding from the camshaft bearing cap installation surface of the cylinder head.
NOTICE: Avoid tapping a new spark plug tube in too far by measuring the amount of the protrusion while tapping.
2. INSTALL VALVES
a. Using SST, push in a new oil seal.
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b. Install the valve.
c. Install the spring seat.
d. Install the valve spring.
e. Install the spring retainer.
f. Using SST, compress the valve spring and place the 2 keepers around the valve stem.
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g. Using a plastic-faced hammer and the valve stem (not in use) tip wound with vinyl tape, lightly tap the valve stem tip to assure proper fit.
NOTICE: Be careful not to damage the valve stem tip.
3. INSTALL SHIMS AND VALVE LIFTERS
a. Install the shim and valve lifter.
b. Check that the valve lifter rotates smoothly by hand.