TM 10-4320-226-14
6.6.2 Cylinder Head Repair.
(continued)
Figure 6-3.
Checking
e.
Check that cylinder head seating
Slight damage to seating surface
Cylinder Head Seating Surface.
surface (figure 6-3) is flat and square.
can be ground.
f. After reworking, measure clearance between cylinder head bottom and cylinder
head seating surface.
The measured value may not be lower than 0.23 inch
(5.8 m).
g. Insert valve in seat and measure distance from crown of valve to cylinder head
seating surface (figure 6-4).
If distance exceeds specifications on either
valve, (table 6-1), seat must be replaced.
Figure 6-4.
Valve Depth Measurement.
6-13
