TM 5-3805-260-24
VALVES
(1)
9N3617 Spring for valves (new)
Length under test force
1 655 in (42 04 mm)
Test force .............. 50 5 lb (220 22 N)
Use again minimum load at length
under test force ..... 35 lb (155 N)
Length of spring at valve open
position ................. 1 167 in (29 64 mm)
Use again minimum load at valve
open position ........154 5 lb (687 N)
Free length after test
1 855 in (47 12 mm)
Outside diameter .. 1 440 in (36 58 mm)
Spring must not be bent more than 065 In (1 65 mm)
(1)
9L91 90 Spring for valves (new)
Length under test force
1 715 in 43 56 mm)
Test force .............. 35 5 lb (155 22 N)
Use again minimum load at length
under test force ..... 23 lb (100 N)
Length of spring at valve open
position .................1 215 in (30 86 mm)
Use again minimum load at valve
open position ........ 145 b (645 N)
Free length after test 1 855 in (47 12 mm)
Outside diameter .. 1 440 in (36 58 mm)
Spring must not be bent more than 065 in (1 65
mm)
(1)
1N4259 Spring for valve (new):
Length under test force ......1.334 in. (33.88 mm)
Test Force ............1.74b 774 39 N m)
Use again minimum bad at length
under test force .... 162 lbs. (720 N m )
Length of spring at valve open
position .................1.802 in. (45.77 mm)
Use again minimum bad at valve
open position ........44 lbs.(194 N m)
Free length after test .........1.996 in. (50.7 mm)
Outside diameter ... ............1.560 n. (39.62 mm)
Spring must not be bent more than .065 in. (1.65
mm)
(2)
Distance from the end of
the valve to the valve spring
spacer seat ...........2 063 015 in (52 40 0 38
mm)
(3)
Diameter of valve stem.
9L7682 Intake Valve...........3725 0005 in (9 462
013 mm)
Use again minimum diameter
of the valve stem ... ............371 in (9 42 mm)
9L7683 Exhaust Valve (tapered stem)
Head end of valve
stem ...............3705.0005 in (9 411 0.013
mm)
Use again minimum diameter of
the head end of valve stem ............ 369 in. (9 37
mm)
Lock end of valve
stem ..................... 3715.0005 in (9.4360013
mm)
Use again minimum diameter of the lock
end of valve stem .. ............ 3704 in (9 408 mm)
Bore in the valve guides (intake
and exhaust) ................ 3745 0005 in (9 512 0 013
mm)
Maximum permissible bore in the valve guides (worn)
Measure 75 in (190 mm) deep
in valve guide bore from both
ends of the valve guide 3760 in (9 550 mm)
(4) Angle of valve face
Intake valve .................. ............ 3015
Exhaust valve ............... 4515’
(5) Diameter of valve head
(intake valve) ................ 2.094005 in (53.19 0.13
mm)
Diameter of valve head
(exhaust valve) ............. 1.804005 in (45.82 0 13 mm)
(6) Thickness of valve lip
Intake valve .................. 091 in (2 31 mm)
Use again minimum valve lip thickness . ---------- 070 in
(1 78 mm)
Exhaust valve ............... ............ 063 in (1 60 mm)
Use again minimum valve lip thickness . ............ 044 In
(1 12 mm)
1-13
