Toyota 4A-FE Repair Manual page 58

EM-74 ENGINE MECHANICAL - Cylinder Head (4A-FE}
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EM0801
EM028 I
EM1628
EM2011
(b) Using vernier calipers, measure the free length of the
valve spring.
Free length: 43.8 mm (1.724 in.)
If the free length is not as specified, replace the valve
spring.
(c) Using a spring tester, measure the tension of the
valve spring at the specified installed length .
Installed tension:
14.6 - 15.8 kg (32.3 - 34.8 lb, 143 - 155 N)
at 34.7 mm {1.366 in.)
If the tension is not as specified, replace the valve spring.
10. INSPECT CAMSHAFTS AND BEARINGS
A. Inspect camshaft for runout
(a) Place the camshaft on V-blocks.
(b) Using a dial indicator, measure the circle runout at
the center journal.
Maximum circle runout: 0.04 mm (0.0016 in.)
If the circle runout is greater than maximum, replace the
camshaft.
B.
Inspect cam lobes
Using a micrometer, measure the cam lobe height.
Standard cam lobe height:
Intake 35.21 - 35.31 mm
(1.3862 - 1.3092 in.)
Exhaust 34.91 - 35.01 mm
(1.3744 - 1.3783 in.)
Minimum cam lobe height:
Intake 34.81 mm (1.3705
in.)
Exhaust 34.51 mm (1.3587 in.)
If the cam lobe height is greater than minimum, replace
the camshaft.
C. Inspect camshaft journals
Using a micrometer, measure the journal diameter.
Journal diameter:
Exhaust No.1
Others
24.949 - 24.965 mm
10.9822 - 0.9829 in.)
22.949 - 22.965 mm
(0.9035 - 0.9041 in.)
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If the journal diameter is not as specified, check the oil
clearance .