Operation Manual

VALVES AND VALVE SPRINGS
5-26
f. After every lapping procedure, be sure to
clean off all of the lapping compound from
the valve face and valve seat.
g. Apply Mechanic’s blueing dye (Dykem) “b”
onto the valve face.
h. Install the valve into the cylinder head.
i. Press the valve through the valve guide
and onto the valve seat to make a clear
impression.
j. Measure the valve seat width “c” again. If
the valve seat width is out of specification,
reface and lap the valve seat.
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EAS24310
CHECKING THE VALVE SPRINGS
The following procedure applies to all of the
valve springs.
1. Measure:
• Valve spring free length “a”
Out of specification → Replace the valve
spring.
2. Measure:
• Compressed valve spring force “a”
Out of specification → Replace the valve
spring.
3. Measure:
• Valve spring tilt “a”
Out of specification → Replace the valve
spring.
Free length (intake)
36.73 mm (1.45 in)
Limit
34.89 mm (1.37 in)
Free length (exhaust)
36.73 mm (1.45 in)
Limit
34.89 mm (1.37 in)
Installed compression spring
force (intake)
96.6–111.2 N (9.85–11.34 kgf,
21.72–25.00 lbf)
Installed compression spring
force (exhaust)
96.6–111.2 N (9.85–11.34 kgf,
21.72–25.00 lbf)
Installed length (intake)
30.60 mm (1.20 in)
Installed length (exhaust)
30.60 mm (1.20 in)
b. Installed length
Spring tilt (intake)
1.6 mm (0.06 in)
Spring tilt (exhaust)
1.6 mm (0.06 in)