TM 10-3930-675-24-2
CYLINDER HEAD REPLACEMENT - CONTINUED
0199 00
INSPECTION - CONTINUED
NOTE
Dimensions CC and DD must be checked from front to rear of cylinder head if head is going to be rebuilt.
6.
Measure flatness of cylinder head combustion face surface as follows:
a.
AA and BB (corner to corner).
b.
c.
DD (across entire head surface).
d.
Measurements must be as noted in Table 1.
D
B
A
B
A
C
D
Table 1. Cylinder Head Flatness Measurements.
ALLOWABLE
CYLINDER HEAD
MAXIMUM
DEVIATION
FLATNESS
MM
IN.
AA and BB
0.200
MAX
0.008
CC
0.076
MAX
0.003
DD
0.127
MAX
0.005
NOTE
Use slot marked for L10 cylinder head screws when checking M11 cylinder head screws.
7.
Check free length of 32 cylinder head screws (20) using screw length gage (31). If end of screw touches foot of gage,
screw is too long and must be replaced. If there is clearance between end of screw and bottom base of gage, screw can
be reused.
31
20
0199 00-10