Readings must be within limits given in table 4-52. The
letter L shows a loose fit. I f readings are not within
given limits, throw away part and get a new one.
I n t a k e valves (1) and exhaust valves (2) were tagged
so fit of each valve stem can be measured in valve guide
it was taken from.
M e a s u r e and note outside diameter of stem of three exhaust valves (2).
M e a s u r e and note inside diameter of three exhaust valve guides (3) 1/8 to 1/4
i n c h from each end of guide. I f diameter is different at each end of guide,
n o t e biggest diameter.
M e a s u r e fit of stem of each exhaust valve (2) in its exhaust valve guide (3).
D o this for all three exhaust valves and exhaust valve guides.
END OF TASK
Table 4-52. Exhaust Valves and Guides Wear Limits
Size and Fit
of New Parts
Item /Point of Measurement
E x h a u s t valve stem outside
0.4363 to 0.4368
E x h a u s t valve guide inside
0.4388 to 0.4394
2 and 3
Fit of exhaust valve stem in
e x h a u s t valve guide