ENGINE MECHANICAL
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 3A-49
VALVE SPRINGS
1. Use a vernier caliper to measure the valve spring free height. Replace spring if less than
specified limit.
2. Measure the springs distortion. If the measured value exceeds the specified limit, the
valve spring must be replaced.
a
b
b
a-Free Standing Height Measurement: 44.65 mm (1.757 in.)
b-Distortion Measurement: Maximum 2 mm (.079 [5/64] in.)
3. Use a spring tester to measure the valve spring height under tension. Replace spring
if less than specified limit.
b
a
Closed Valve
a-Applied Pressure: 32-36 kg (71-79 lb)
b-Height Measurement: 38.60 mm (1.460 in.)
a
b
Open Valve
a-Applied Pressure: 92.5-96.2 kg (204-212 lb)
b-Height Measurement: 28.20 mm (1.110 in.)
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