TM 5-3805-260-24
VALVE SEATS AND INSERTS
INTAKE VALVE (with valve seat insert)
(1)
Diameter of the valve seat
insert ......................2 15000005 in (54 6100.013 mm)
(2)
Bore In head for valve seat
insert ......................2 1470 0005 In (54 534 0.013 mm)
(2)
Depth of bore in head for valve
seat insert. .......................... .442 .002 in (11.23 0.05 mm)
(3)
Maximum permissible width of the face of the
valve seat insert ..................120 in (3 05 mm)
(4)
Distance from head of valve to cylinder head face:
Maximum permissible (valve closed) ........................068 in (1 73 mm)
Minimum permissible (valve closed) .........................036 in (0 91 mm)
(5)
Angle of the face of the valve seat insert ..................301/2 1/2
(6)
Outside diameter of the face of the valve
seat insert ...........................2.045 005 in (52.23 0.13 mm)
Maximum permissible ........2 065 in (52 45 mm)
(7)
Angle to grind face of seat insert (to get a reduction
of maximum seat diameter) ......................................15
EXHAUST VALVE
(1)
Depth of bore in head for valve
seat insert ............................442 .005 in (11 23 0 13 mm)
(2)
Diameter of valve
seat insert .......................... 1.9120 0005 in (48 565 0.013 mm)
(3)
Bore in head for valve
seat insert ..........................1.9090 0005 in (48 489 0.013 mm)
Maximum permissible width of the face
of the valve seat insert ....... ....................................105 in (2 67 mm)
(4)
Distance from head of valve to cylinder head face
Maximum permissible (valve closed) .........................085 in. (2 16 mm)
Minimum permissible (valve closed) .........................050 in (1 27 mm)
(5)
Angle of the face of the valve seat insert ..................451/2 1/2
(6)
Outside diameter of the face of the
valve seat insert .................1.735 .005 in (44.07 0.13 mm)
Maximum permissible .........1.760 in (44 70 mm)
(7)
Angle to grind face of seat insert (to get a reduction
of maximum seat diameter) ...................................... 15°
1-14
