CYLINDER HEAD REPAIR (CONT) -726030061

TM 9-2320-360-34-2

19-7. CYLINDER HEAD REPAIR (CONT)

(28) Visually inspect valves (19) for cracks or bent

valve stem.

NOTE

Minimum diameter of valve stem is

0.309 in.

(7.849 mm).

Maximum

diameter is 0.310 in. (7.874 mm).

(29) Measure stem diameter of valves (19).

(30) Replace any valve (19) that failed inspection.

(31) Visually inspect valves (19) for pitting or ridges

on valve face. If pitting or ridges are found,

valve must be refaced.

(32) Inspect valve springs (20) for pit marks or

cracks.

NOTE

Minimum spring load is 25 lb (11.35

kg) when spring is compressed to

1.80 in. (45.72 mm).

(33) Test spring load of valve springs (20) using

spring tester (21).

(34) Replace valve springs (20) that fail inspection.

(35) Inspect spring seats (22) and spring caps (23)

for cracks or damage. Replace unserviceable

parts.

19-46