S-61
V3300-E2B, V3300-T-E2B, WSM
DIESEL ENGINE
Free Length and Tilt of Valve Spring
1. Measure the free length (B) with vernier calipers. If the
measurement is less than the allowable limit, replace it.
2. Put the spring on a surface plate, place a square on the side of
the spring, and check to see if the entire side is contact with the
square. Rotate the spring and measure the maximum (A). If the
measurement exceeds the allowable limit, replace.
3. Check the entire surface of the spring for scratches. Replace it,
if any.
W1063303
Valve Spring Setting Load
1. Place the valve spring on a tester and compress it to the same
length it is actually compressed in the engine.
2. Read the compression load on the gauge.
3. If the measurement is less than the allowable limit, replace it.
W1063470
Oil Clearance between Rocker Arm Shaft and Bearing
1. Measure the rocker arm bearing I.D. with an inside micrometer.
2. Measure the rocker arm shaft O.D. with an outside micrometer,
and then calculate the oil clearance.
3. If the clearance exceeds the allowable limit, replace the rocker
arm and measure the oil clearance again. If it still exceeds the
allowable limit, replace also the rocker arm shaft.
W1063697
Tilt (A) Allowable limit
1.0 mm
0.039 in.
Free length (B)
Factory
spec.
Intake
valve
35.1 to 35.6 mm
1.3819 to 1.4016 in.
Exhaust
valve
41.7 to 42.2 mm
1.6417 to 1.6614 in.
Allowable
limit
Intake
valve
34.6 mm
1.3622 in.
Exhaust
valve
41.2 mm
1.6220 in.
(A) Tilt (B) Free length
Setting load / setting
length
Factory
spec.
Intake
valve
63.547 N / 31.5 mm
6.48 kgf / 31.5 mm
14.256 lbs / 1.2401 in.
Exhaust
valve
117.6 N / 35 mm
12.0 kgf / 35 mm
26.4 lbs / 1.3780 in.
Allowable
limit
Intake
valve
45.864 N / 31.5 mm
4.68 kgf / 31.5 mm
10.296 lbs / 1.2401 in.
Exhaust
valve
100 N / 35 mm
10.2 kgf / 35 mm
22.5 lbs / 1.3780 in.
Oil clearance of rocker
arm shaft and bearing
Factory spec.
0.016 to 0.045 mm
0.0006 to 0.0018 in.
Allowable limit
0.15 mm
0.0059 in.
Rocker arm shaft O.D. Factory spec.
15.973 to 15.984 mm
0.6289 to 0.6293 in.
Rocker arm I.D. for shaft Factory spec.
16.000 to 16.018 mm
0.6299 to 0.6306 in.
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