Quantcast 7N1904 Spring (outer) for valve

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3500 ENGINE
SPECIFICATIONS
(1)
Height to top of valve guides
(4)
Diameter of valve stems
...................... 26.00 + 2.00 mm (1.024 + .079 in.)
(new) .........9.441 + 0.008 mm (.3717 + .0003 in.)
(2) 7N1904 Spring (outer) for valve:
Length under test force ...... 56.36 mm (2.219 in.)
Test force ................... 254 + 25 N (56.9 + 5.6 lb.)
Use again minimum load at length under test
force ............................................ 229 N (51.5 lb.)
Length of spring at valve open position
............................................ 40.36 mm (1.589 in.)
Use again minimum load at valve open position
...................................................... 800 N (180 lb.)
Bore in valve guides with guides installed in the head
Free length after test .......... 62.50 mm (2.461 in.)
(new) .........9.487 + 0.025 mm (.3735 + .0010 in.)
Outside diameter ................ 43.96 mm (1.731 in.)
Use again maximum bore in valve guides with
guides installed in the head
Spring must not be bent more than
............................................9.540 mm (.3755 in.)
................................................ 2.18 mm (.086 in.)
(5)
Diameter of valve
(3)
7N1903 Spring (inner) for valve:
heads ............56.00 + 0.15 mm (2.205 + .006 in.)
Length under test force ...... 45.49 mm (1.791 in.)
Angle of valve faces ..........................291/4 + 1/4
(6)
Test force ..................... 125 12 N (28 + 2.7 lb.)
(7)
Depth of bore in head for valve
Use again minimum load at length
seat inserts........ 14.00 + 0.15 .lm (.551 +.006 in.)
under test force ........................... 113 N (25.4 lb.)
(8)
Diameter of valve seat
Length of spring at valve
inserts....60.119 + 0.015 mm (2.3669 + .0006 in.)
open position ...................... 29.49 mm (1.161 in.)
Bore in head for valve seat
Use again minimum load at valve
inserts....60.000 + 0.025 mm (2.3622 + .0010 in.)
open position ............................... 397 N (89.3 lb.)
(9)
Angle of face of valve seat
inserts.................................................3014 + 1/2
Free length after test .......... 51.54 mm (2.029 in.)
Outside diameter ................ 29.24 mm (1.151 in.)
(10)
Outside diameter of the face of valve seat
inserts............55.14 + 1.48 mm (2.171 + .058 in.)
Spring must not be bent
more than ............................... 1.83 mm (.072 in.)
14


 


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