Piper Navajo PA-31 Service Manual page 247

PIPER NAVAJO SERVICE MANUAL
5-76. REMOVAL OF FLEXIBLE ACTUATOR SHAFT. (Refer to Figure 5-20.)
a. Remove the center floor panel located in the main cabin area.
b. Remove the right and/or left row of seats and floor panels aft of the main spar.
c. Remove the aft access plate on the fairing located on the underside between the fuselage and
wing.
d. Remove the access plates at the aft side of the wheel well at stations 34.50, 44.50 and 54, and on
the underside of the wing at stations 65, 82.75 and 92.50.
e. Cut the safety wire (12) and disconnect the shaft (4 and 6) from the actuator motor (5) and flap
transmission (3 and 7).
f.
Remove the support clamp on the fuselage bulkhead and the support grommets within the wing
and fuselage.
g. Remove the actuator shaft.
5-77. INSTALLATION OF FLEXIBLE ACTUATOR SHAFT. (Refer to Figure 5-20.)
a. Draw the shaft (4 or 6) through the wing into the fuselage.
b.
Connect the flexible drive shafts to the transmissions. Be sure that the splines are properly
engaged and run the shaft attaching nut on finger tight. Safety the nut with MS20995-C41 safety wire.
c. Check the flap rigging and adjustments per instructions given in this section.
d. Install the access plates, panels, clamps, grommets and seats.
5-78. REMOVAL OF FLAP TRANSMISSION.
(Refer to Figure 5-20.)
a. Lower the flap and remove the access plate on the aft underside of the wing and at the false spar area.
both of which are at station 92.50.
b. Disconnect the transmission tube (18) from the flap horn bracket (16).
c. Remove the safety wire (12) and disconnect the flexible actuator shaft (4 and 6).
d. Remove the spreader bushing and washers (15) from between the transmission attachment brackets.
e. Remove the transmission from its mounting brackets and draw the unit through the access opening
in the wing false spar.
5-79. DELETED.
5-80. DELETED.
5-81. DELETED.
5-82. DELETED.
5-83 INSTALLATION OF FLAP TRANSMISSION.
(Refer to Figure 5-20.) Ascertain that the correct
flap transmission assemblies are being installed by checking the part numbers on the assemblies with
information in the latest PA-31 Parts Catalog.
a. Lubricate the flap transmission assembly in accordance with lubrication chart.
b Insert the transmission through the access opening in the wing false sparand attach to its mounting
brackets. To allow the transmission to rotate, tighten the attachment bolts (26) only fingertight and safety
Revised: 3/2/84
SURFACE CONTROLS
Effectivity
CALCO
1K7