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