B250 3/4 Ton Van V8-360 5.9L (1984)
FIGURE 15 - TESTING ACCELERATOR PUMP DISCHARGE CHECK BALL AND SEAT
FIGURE 16 - SERVICING VACUUM POWER VALVE PISTON AND RETAINING RING
FIGURE 17 - SERVICING MECHANICAL POWER VALVE PUSH ROD
Publication #81-370-6008 Revised TSB 14-04-87 May 4, 1987
(3)
Install mechanical power valve push rod spring, push rod spring, push rod and "E" clip retainer. Push plastic cap on to push rod (2280 models
only) (Fig. 8).
(4)
Install accelerator pump plunger assembly through air horn and attach internal lever with Clink (2280 models only). On 6280 models, install
new accelerator pump cup.
(5)
Place a new gasket on air horn. Lower air horn straight down on main body; guiding accelerator pump plunger into its cylinder. Do not cut lip
of plunger on sharp edge of cylinder. Install attaching screws and tighten to 25 inch pounds from center out.
(6)
Install accelerator pump arm, internal pump lever and pump operating shaft. On 2280 C link and internal pump lever must be attached to
accelerator pump shaft. Install "E" clip (Fig. 5).
(7)
To install fast idle connector link, engage plain end in slot of fast idle cam (from inside). Engage other end of rod in choke lever. With choke
valve wide open, slide lever over choke shaft; (aligning flats). Install attaching lockwasher and nut. Tighten securely (Fig. 3).
(8)
Install accelerator pump link in No. 1 hole closest to Air Horn and retain with cotter pin on throttle lever end.
