Installation Of Aileron Control Cables; Removal Of Aileron Bellcrank Assembly - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
5-10. INSTALLATION OF AILERON CONTROL CABLES. (Refer to Figure 5-3.)
a. The right or left primary control cables (15 and 22) may be installed by the following procedure:
1. From the access hole at the aileron bellcrank, draw the control cable through the wing into
the fuselage and then forward through the fuselage.
2. Connect the control cable turnbuckle ends at the forward end of the aileron bellcrank.
3. Connect the cable to the forward control cable at the turnbuckle ( 17) within the fuselage at
station 76.00.
4. If balance cable is installed, install the cable guard pins at wing stations 29.00 and 150.00
and fuselage station 164.50.
b. The right balance cable (16) may be installed by the following procedure:
WARNING
Ensure that red end on balance cable is attached to red lug on
bellcrank
1. Ascertain that the right and left balance cables (16 or 23) are connected, if the left cable (22) is
installed.
2. Draw the cable from the fuselage into the wing and attach the turnbuckle at the aft end of the
aileron bellcrank (1).
3. With the aileron primary cable (16) installed, install the cable guard pins at wing stations 29.00
and 150.00 and fuselage station 171.00.
c. The left balance cable (23) may be installed by the following procedure:
WARNING
Ensure that red end on balance cable is attached to red lug on
bellcrank
1. Connect the right and left balance cables at the cable ends (18) at fuselage station 171.25.
2. Draw the interconnecting cables (20 and 21) to the rudder back through the fuselage and
connect the cable ends to the rudder take off cable ends at the turnbuckles (26) at station 285.00.
3. Install cable guard pins at fuselage stations 244.00 and 274.00.
4. Draw the balance cable from the fuselage through the wing and attach the turnbuckle at aft
end of the aileron bellcrank (24).
5. Install the fairlead (19) at fuselage station 171.25, between where the interconnecting cable
attaches to the balance cable.
6. Install cable guard pins at fuselage station 171.00 and wing stations 29.00 and 150.00.
d. Set cable tension per Table V-II and check control cable rigging and adjustment per paragraph 5-13.
Also check cable clearance.
e. Verify that all aileron cables are properly routed around pulleys and are secured with cable gaurds.
Verify, if applicable, that the red painted cable terminals on the aileron balance cables are installed to the red
painted lugs on the aileron bellcranks in the wings. Verify that the trailing edge of the left aileron moves UP
and the trailing edge of the right aileron moves DOWN when the control wheel is turned counterclockwise
and vice-versa when the control wheel is turned clockwise.
f. Install access plates and panels.
5-11. REMOVAL OF AILERON BELLCRANK ASSEMBLY. (REFER TO FIGURE 5-3.)
WARNING
Before removing left or right balance cable, use red enamel paint
to restore color code on cable end and aft lug end of bellcrank.
a. Remove the access plate to the bellcrank assembly.
b. Relieve cable tension from the control system by rotating one of the turnbuckles (2) attached to the
bellcrank (1 or 24).
c. Disconnect the turnbuckle ends (54 and 55) from the forward and aft ends of the bellcrank (24).
d. Disconnect the aileron control rod (25) at the bellcrank.
e. Remove the pivot bolt (62) securing the bellcrank and remove bellcrank from wing.
f. The stop block (61 ) may be removed by unbolting and removing from the wing.
Revised: 3/31/94
SURFACE CONTROLS
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