Isuzu C240 - Valve Spring

TCM SHOP MANUAL
VALVE SPRING
Valve Spring Free Height
Use a vernier caliper to measure the valve spring free
height.
If the measured value is less than the specified limit, the
valve spring must be replaced.
Inner and Outer Spring Free Height mm (in)
Standard Limit
Inner 47.9 (1.89) 46.5 (1.83)
Outer 47.3 (1.86) 45.8 (1.80)
Valve Spring Inclination
Use a surface plate and a square to measure the valve
spring inclination.
If the measured value exceeds the specified limit, the
valve spring must be replaced.
Inner and Outer Spring Inclination mm (in)
1.0 (0.04)
Valve Spring Tension
Use a spring tester to measure the valve spring tension.
If the measured value is less than the specified limit, the
valve spring must be replaced.
Valve Spring Tension kg (Ib/N)
comer” | Standard — | Limit
a6 5.55 ~ 6.25 5.0
Inner Spring 11.48 int (12.21 - 13.78/ | (11.03/
: 54.39 - 61.25) | 49.00)
19.65-22.15 | 180
Outer Spring ae cin | (43.33 - 48.847 | (39.69/
192.57 - 217.07)| 176.40)
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