Yanmar 4JH2E Service Manual page 251

Chapter 7 Reduction and Rerersing Gear
3. Inspection and Serricing
3·6 Thrust caller A and B for clutch shaft
Oil filler Oi! filler case
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4JH Series.
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T I
Cupspring
1
J
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hrus! collar
A
1
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1
l
Clutch geu (A)
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Th Mt co.1" B
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Clutch shaft
(1)
Visually inspect the sliding surface of thrust collar
A
or
B to check for signs of overheating, scoring, or cracks.
Replace the collar if any abnormal condition is found.
(2) Measure the thickness of thrust collar A or B, and
replace it when the dimension exceeds the specified
limit.
Sliding surface
Sliding surface-
t,
Thrust collar A
Thrust collar 8
mm
(in.)
Stepped wear
Standard Limit
Thrust collar A, t
1
t,
0.1
0.05
(0.0039)
(0.0020)
Thrust collar 8, t
2
1.0
0.20
t,
(0.0394)
(0.0079)
7-36
3-7
Cup spring and spring retainer
(1 )Check for cracks and damage to the cup spring and
spring retainer. Replace the part if defective.
(2)Measure the free length of the cup spring and the thick-
ness of the spring retainer. If the length or the thickness
deviates from the standard size, replace the part.
Cup
spring
T
Standard
Cup spring, T
2.8 - 3.1
I0.1102 - 0.1220)
Spring retainer, T
2.92-308
I0.1150 - 0.1213)
-
Spring retainer,
t
Spring retainer
t
T
mm(in.)
Limit
2.6
(0.1024)
2.8
10.1102)
0.1
(0.0039)
Printed in Japan
AOA1029-9002