Figure 3-40. Cylinder head, disassembly and reassembly.

TM 10-3930-242-34

Figure 3-40. Cylinder head, disassembly and reassembly.

affect the flatness of the head. Therefore, the

bottom (fire deck) of the cylinder head should be

checked for flatness as follows:

The maximum allowable warpage limits should

(a) U s i n g a n a c c u r a t e s t r a i g h t e d g e a n d

be used as a guide in determining the advisabil-

f e e l e r gage, check for transverse warpage at

ity of reinstalling the head on the engine or of

e a c h end and between all cylinders.

refacing it. The number of times a cylinder head

Also check for longitudinal warpage in six

may be refaced will, of course, depend upon the

p l a c e s . Maximum allowable warpage is given

a m o u n t of stock removed from the head during

below

previous reworking operations. When refacing a