B250 3/4 Ton Van V8-360 5.9L (1984)
5.
MECHANICAL POWER VALVE ADJUSTMENT 2280
(1)
Remove bowl vent cover plate.
(2)
Hold throttle in wide open position, (3) Insert 5/64" Allen wrench in mechanical power valve adjustment screw.
(4)
Push screw down and release to determine if clearance exists. Turn screw clockwise until clearance is zero.
(5)
Adjust by turning screw counter clockwise one turn.
(6)
Install bowl vent gasket and cover plate. IF ACCELERATOR PUMP ADJUSTMENT IS CHANGED, THIS ADJUSTMENT MUST BE RESET.
6.
ACCELERATOR PUMP STROKE MEASUREMENT 6280 MODELS
(1)
Remove bowl vent cover plate and gasket.
(2)
With pump link and levers installed, adjust the throttle blades to the closed position by backing out the idle speed screw.
(3)
Set the distance from the top of pump lever to the top of bowl vent cover surface to .180" +/- .010" by bending the pump link. Check that wide
open throttle can be reached without binding.
(4)
Install gasket and bowl vent cover plate.
(5)
Reset Idle Speed.
TSB 14-04-87 May 4, 1987 Publication #81-370-6007
12.
PROPANE ASSISTED IDLE SET PROCEDURE (2280 AND 6280 MODELS)
RPM
Chrysler No.
Vendor No.
4324629
R-40214A
Refer to VECI Label
4324631
R-40216A
4324632
R-40221A
4324633
R-40222A
On a new vehicle (under 300 miles/500km) reduce RPM settings by 75 RPM. Tampering with the carburetor is a violation of Federal law.
Adjustment of the carburetor idle air fuel mixture can only be done under certain circumstances as explained below. Upon completion of the
adjustment, the concealment plugs must be replaced. This procedure should only be used if an idle defect still exists after normal diagnosis reveals
