Bronco L6-300 4.9L VIN Y 1-bbl (1983)
FIGURE 24
d.
Hold throttle lever in the wide-open throttle position to raise the accelerator pump rod. With a toothpick, or other sharp tool, apply any
commercially available silicone RTV (such as Dow Corning "Silastic") to the top side of the upper body casting around the accelerator pump
rod (Figure 24). Fill the hole completely around the rods from the top side only and release the throttle lever.
e.
With a rubber band, tie the throttle lever in closed-throttle position. Push fast idle cam to "off" position so that choke rod is fully raised. Fast
idle cam should remain in "off" position.
f.
With a toothpick, apply silicone RTV to bottom side of upper body casting around the choke shaft rod. Fill the hole completely around the
rod from the bottom side only.
g.
Install the spring, pintle, gasket, and stepper motor.
h.
Allow carburetor to stand at room temperature for 24 hours without disturbing silicone RTV.
i.
After 24-hour cure, remove rubber band from throttle lever, and open throttle to break (free) accelerator pump rod from silicone RTV. Bulk
of RTV sealant should remain attached to upper body.
j.
Manually exercise choke linkage to break (free) choke rod from silicone RTV. Bulk of RTV sealant should remain attached to upper body.
k.
Re-install carburetor on vehicle.
7.
Re-install and secure the air cleaner assembly as follows:
a.
Set the air cleaner tray assembly on the carburetor and check that nothing is preventing the tray seating securely and completely sealing the
flange.
b.
Connect and secure the vacuum hoses.
c.
Install and seat a new heavy duty air cleaner element in the tray. Use E2TZ-9601-B (FA-732) for 4.9L and E0TZ-9601-A (FA-688) for
5.0L/5.8L. Use non-heavy duty element for 7.5L.
NOTE:
Use of incorrect element will allow dirt to be ingested and will damage the engine.
d.
Install the air cleaner cover and place the washer grommet rubber side down. Torque the wing nut hand tight (20 in.lbs.). Try to rotate the air
cleaner assembly slightly. If it resists rotation, sealing to the carburetor is assured.
e.
Connect the crankcase filter hose securely.
f.
Install the heat riser tube. Connect the fresh air zip tube.
