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 TM 55-1905-223-24-3
Table 4-3.
Oversize Valve Seat Insert Specifications - inch (mm)
Oversize
Oversize
Insert
Cylinder Head
Insert
Diameter
Depth
O.D.
I.D.
Thickness
NOTE
Be sure to measure the insert before machining the head or installing the inset.
0.005
Std.
2.0075/2.0085
2.0045/2.0055
0.278/0.282
(0.13)
(50.991/51.016)
(50.914/50.940)
(7.06/7.16)
0.010
Std.
2.0125/2.0135
2.0095/2.0105
0.278/2.282
(0.25)
(51.118/51.143)
(51.041/51.067)
(7.06/7.16)
0.020
0.005
2.0225/2.0235
2.0195/2.0205
0.238/0.287
(0.50)
(0.13)
(51.372/51.397)
(51.372/51.397)
(7.19/7.29)
0.030
0.010
2.0325/2.0335
2.0295/2.0303
0.288/0.292
(0.76)
(0.25)
(51.626/51.651)
(51.549/51.575)
(7.32/7.42)
Table 4-4. Valve Spring Measurements and Wear Limits - inch (mm)
Wire
Lb (N)
Lb (N)
Lb (N)
Free Length
No.
Diameter
Length
Worn
New
New
Inch (mm)
Coils
Inch (mm)
Inch (mm)
Limit
Minimum
Maximum
2.685
9
0.177
1.724
143
147.25
162.75
(68.20)
(4.50)
(43.79)
(636)
(655)
(724)
ASSEMBLY
a.
Install the pipe plugs, fuel inlet and fuel drain fittings into the fuel passages.
(1) Ensure the fittings and plugs are installed in the same location as their original location.
(2) Apply teflon tape or teflon pipe thread lubricant to the threads.
(3) Tighten the pipe plugs to the torque value given in Table 4-5.
4-50
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