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 TM 5-2420-224-34
CYLINDER HEAD REPAIR (CONT)
7.
Inspect each valve (2) for cracks, burns,
warpage, wear, or bent stems. Replace if
damaged.
Measure each valve (2) in accordance with
8.
f o l l o w i n g table. If valves do not meet
specifications, replace valves.
Valve Specifications
Intake
In.
In.
(mm)
(mm)
Valve Stem
0.3518-0.3523
0.3907-0.3913
Diameter A
(8.935-8.950)
(9.925-9.940)
1.732
Valve Seat
1.417
Diameter B
(44.0)
(36.0)
Valve Head
1.728-1.736
1.413-1.421
Diameter C
(43.9-44.1)
(35.9-36.1)
Height D
0.098-0.110
0.098-0.110
New
(2.5-2.8)
(2.5-2,8)
Valve Seat
0.110-0.138
0.138-0.165
Width E
(2.8-3.5)
(3.5-4.2)
Valve Seat
45 degrees
45 degrees
Angle F
+ 10 minutes
+ 10 minutes
Valve Length
5.524-5.539
5.524-5.539
(140.3-140.7)
(140.3-140.7)
13-6
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