CAC Gasoline Engine Maintenance And Servicing Manual
33
6.the sizes for intake valve, intake valve seat, exhaust valve seat and valve guide
―the size of intake valve seat and cylinder head valve seat hole
―
the size of exhaust valve seat and cylinder head valve seat hole
—
——the size of valve guide and valve guide hole
Diameter. of intake
valve seat
Diameter of the
cylinder head
valve seat hole
press fit
clearance
Standard
478
41.877+0.01
-0.01
41.763+0.025
0
oversize
0.5
42.377+0.01
-0.01
42.263+0.025
0
oversize
1.0
42.877+0.01
-0.01
42.763+0.025
0
0.079—0.124
Standard
480
43.877+0.01
-0.01
44.763+0.025
0
oversize
0.5
44.377+0.01
-0.01
44.263+0.025
0
oversize
1.0
44.877+0.01
-0.01
44.763+0.025
0
0.079—0.124
Diameter. of intake
valve seat
Diameter of the
cylinder head
valve seat hole
press fit
clearance
Standard
478
35.377+0.01
-0.01
35.263+0.025
0
oversize 0.5
35.877+0.01
-0.01
35.763+0.025
0
oversize 1.0
36.377+0.01
-0.01
36.263+0.025
0
0.079—0.124
Standard
480
38.377+0.01
-0.01
38.263+0.025
0
oversize 0.5
38.877+0.01
-0.01
38.763+0.025
0
oversize 1.0
39.377+0.01
-0.01
39.263+0.025
0
0.079—0.124
Level
The valve guide
hole
The diameter. of
hole
press fit
clearance
Standard
13.555 0
-0.01
13.481-13.519
oversize
14.305 0
-0.01
14.231-14.269
oversize
14.505 0
-0.01
14.481-14.519
0.026-0.07
Fig.46
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