B250 3/4 Ton Van V8-360 5.9L (1984)
7.
BOWL VENT VALVE ADJUSTMENT 2280
(1)
Remove bowl vent cover plate and vent valve lever spring. CAUTION: Do not dislodge or misplace vent valve lever retainer/pivot pin.
(2)
With the throttle in the curb idle position, press firmly down on the vent valve lever where the spring seats; with another finger of the same hand,
simultaneously press down on the vent valve tang until the vent valve is lightly seated (closed). CAUTION: If the carburetor is not on the engine,
it must be on a raised fixture so as not to change the curb idle throttle plate position.
(3)
Using the other hand, measure the resulting gap between the contact surfaces of the vent valve lever and the vent valve tang with an appropriate
gauge.
(4)
Adjust by bending the end of the vent valve lever up or down until the specified gap (.030") is set.
(5)
Install vent valve lever spring and bowl vent cover plate.
NOTE:
THE BOWL VENT VALVE ADJUSTMENT MUST BE RESET IF THE ACCELERATOR PUMP ADJUSTMENT IS CHANGED.
Publication #81-370-6007
TSB 14-04-87 May 4, 1987 Publication #81-370-6007 Page 14-51
7.
BOWL VENT VALVE ADJUSTMENT 2280
(1)
Remove bowl vent cover plate and vent valve lever spring. CAUTION: Do not dislodge or misplace vent valve lever retainer/pivot pin.
(2)
With the throttle in the curb idle position, press firmly down on the vent valve lever where the spring seats; with another finger of the same hand,
simultaneously press down on the vent valve tang until the vent valve is lightly seated (closed). CAUTION: If the carburetor is not on the engine,
it must be on a raised fixture so as not to change the curb idle throttle plate position.
(3)
Using the other hand, measure the resulting gap between the contact surfaces of the vent valve lever and the vent valve tang with an appropriate
gauge.
(4)
Adjust by bending the end of the vent valve lever up or down until the specified gap (.030") is set.
(5)
Install vent valve lever spring and bowl vent cover plate.
NOTE:
THE BOWL VENT VALVE ADJUSTMENT MUST BE RESET IF THE ACCELERATOR PUMP ADJUSTMENT IS CHANGED.
Publication #81-370-6008
TSB 14-04-87 May 4, 1987 Publication #81-370-6008 Page 14-50
