TM 5-3895-383-24
(11)
Outside diameter of the seating face of the valve seat
insert:
Intake valve........................47 0.13 mm (1.850 ± .005 in)
Exhaust valve ....................40 ± 0.13 mm (1.574 ± .005 in)
(12)
"Use again" thickness of valve lip:
Intake valve...............................................1.80 mm (.071 in)
Exhaust valve ...........................................1.50 mm (.059 in)
(13)
Distance from head of valve to the cylinder head face
(valve closed):
Exhaust valve
Maximum permissible.............................2.22 mm (.087 in)
Minimum permissible..............................1.51 mm (.059 in)
Intake valve
Maximum permissible.............................2.05 mm (.081 in)
Minimum permissible..............................1.13 mm (.044 in)
Type II Cylinder Head (Larger exhaust valve spring and
retainer)
NOTE:
Intake and exhaust valve stems are to be coated
with
8T2998
Break-in
Lubricant
prior
to
installation in the cylinder head.
NOTE:
For removing and installation of valve guides and
valve seat insets, use 1U6685 Tool Group.
(1)
Exhaust valve.
(2)
Intake valve.
(3)
6I2307 Spring for exhaust valves.
Free length .................................................. 81 mm (3.19 in)
Assembled length....................................70.8 mm (2.79 in)
Load at assembled length............ 612 ± 31 N (138 ± 7 lb)
Minimum operating length .....................59.0 mm (2.32 in)
Load at minimum operating length .................1325 ± 66 N
(298 ± 15 lb)
(4)
7C4273 Spring for intake valves.
Free length ...............................................71.0 mm (2.80 in)
Assembled length................................65.86 mm (2.593 in)
Load at assembled length...............217 ± 22 N (49 ± 5 lb)
Minimum operating length .....................50.7 mm (2.00 in)
Load at minimum operating length ...................858 40 N
(193 9 lb)
(5)
Height to top of valve guides .......................23.0 ± 0.5 mm
(.906 .020 in)
(6)
Diameter of valve stems (new) ............8.000 ± 0.008 mm
(.3150 ± .0003 in)
"Use again" minimum diameter of valve
stems.....................................................7.965 mm (.3136 in)
Bore in valve guides with guides installed in
head .........................8.045 ± 0.010 mm (.3167 ± .0004 in)
"Use again" maximum bore in valve guides with guides
installed in head ..................................8.080 mm (.3181 in)
(7)
Diameter of valve head:
Intake valve..................47.00 ± 0.13 mm (1.850 .005 in)
Exhaust valve ..............40.00 ± 0.13 mm (1.575 .005 in)
(8)
Angle of valve faces:
Intake valve......................................... 29-3/4 1/4 degrees
Exhaust valve ............................................ 45 1/4 degrees
(9)
Diameter of valve seat inserts:
Intake valve............................................50.000 ± 0.013 mm
(1.9685 ± .0005 in)
Exhaust valve ........................................43.000 ± 0.013 mm
(1.6929 ± .0005 in)
Bore in head for valve seat insert:
Intake valve............................................49.931 ± 0.013 mm
(1.9658 ± .0005 in)
5-10
