Piper Navajo PA-31 Service Manual page 612

PIPER NAVAJO SERVICE MANUAL
254
44 MAX. VALVE CLOSED
1.00 MIN. VALVE OPEN
Figure 9-10. Adjustment of Cross-feed Valve
9-29. INSTALLATION OF FUEL VALVES. (Refer to Figure 9-9.)
a. Place the valve in position and secure.
b. Connect the lines to the valve.
c. Connect the control cable to the valve and check for proper adjustment. (Refer to
paragraphs 9-30, 9-31 or 9-32.)
d. Allow fuel to flow to valve and check for leaks.
e. Install access plates.
9-30. ADJUSTMENT OF SELECTOR CONTROL VALVE.
a. Remove the access covers located on the underside of the fuselage, below the fuel
selector panel just ahead of the main spar and the access panels between the fuselage and the
underside of the wings.
b. Ascertain that the control cable wire is connected to the selector valve handle in the
cockpit and that the valve is in neutral or OFF position. The wire on the valve handle should
be free to rotate. Lubricate the external parts of the selector valve sprocket (Scott valve
only) and control cable swivel fitting with ESSO "Beacon 325" grease or equivalent
(MIL-G-3278).
c. Place the fuel selector handle in the cockpit in neutral or OFF position.
d. Assemble the swivel assembly with the control cable wire on the arm of the selector
handle. Apply a slight pressure on the swivel stud toward the end of the wire so that as the
stud and wire are being drawn into the swivel, through tightening of the nut, the stud will
center itself. Tighten the stud nut, allow the swivel to be free to rotate and safety. Lubricate
the control cable swivel fitting per step b.
e. Actuate the selector to ascertain that the valve moves into its three positions.
f. Reinstall the access and selector panels.
Reissued: 10/12/79
FUEL SYSTEM
MB20