Toyota 3S-GE Repair Manual page 110

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ENGINE — ENGINE MECHANICAL
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(d) Hand—lap the valve and valve seat with an abrasive
compound.
(e) After hand—lapping. clean the valve and valve seat.
9.
(8)
INSPECT VALVE SPRINGS
Using a steel square, measure the deviation of the
valve spring.
Maximum deviation:
2.0 mm (0.079 in.)
If the deviation is greater than maximum, replace the
valve spring.
(b) Using a vernier caliper. measure the free length of the
valve spring.
Free length:
lntake (Rad painted mark)
43.18 mm (1.7000 in.)
Exhaust (Green painted mark)
43.34 mm (1 .7063 in.)
If the free length is not as specified, replace the valve
spring.
Using a spring tester, measure the tension of the valve
spring at the specified installed length.
Installed tension (at 35.4 mm (1.394 in.):
lntake (Red painted mark)
163 — 190 N
(16.6 — 19.4 kgf, 36.6 —— 42.8 Ibf)
Exhaust (Green painted mark)
153 — 180 N
(15.6 — 18.4 kgf, 34.4 — 40.6 Ibf)
If the installed tension is not as specified, replace the
valve spring.
INSPECT CAMSHAFTS AND BEARINGS
Inspect camshaft for runout
Place the camshaft on V—blocks.
Using a dial indicator, measure the circle runout at the
center journal.
Maximum circle runout:
0.06 mm (0.0024 in.)
If the circle runout is greater than maximum, replace
the camshaft.
(C)
10.