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NAVAJO CHIEFTAIN SERVICE MANUAL
5-62. REMOVAL OF FLEXIBLE FLAP ACTUATOR SHAFT. (Refer to Figure 5-18.)
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 aft access plate on fairing located on the underside between the fuselage and wing.
d.
Remove access plates at the aft side of wheel well at wing stations 34.50, 44.50 and 54.00 and on
the underside of wing at the trailing edge at wing stations 65.00, 82.75 and 92.50.
e.
Cut safety wire (12) and disconnect shaft (4 and 6) from actuator motor (5) and flap
transmission (3 and 7).
f.
Remove support clamp on fuselage bulkhead and support grommets within wing and fuselage.
g.
Remove the actuator shaft.
5-63. INSTALLATION OF FLEXIBLE FLAP ACTUATOR SHAFT. (Refer to Figure 5-18.)
a.
Draw the shaft 4 or 6 through the wing into the fuselage.
b.
Align and insert tang on shaft assembly into slot in transmission. Tighten nut finger tight and
wrench not over 1 16 turn from finger tight. When properly installed. the nut on flexible shaft will bottom
or be within 3 16 of an inch of bottoming against transmission. thus insuring that the end of shaft housing
is firmly seated against transmission. Safety nut with .040 wire.
c.
After the transmission end of shaft has been connected, observe the clearance between the outer
sheath and inner cable. Twist outer sheath in proper direction; bring clearance to 3/64+ 1/32 of an inch. It
may be necessary to loosen clamp on fuselage bulkhead in order to twist outer sheath if cable has not been
removed from aircraft. Holding outer sheath in this position, insert spline into flap motor and tighten nut.
Safety nut with .040 wire. The clearance check noted above must be conducted on every occasion that the
flexible shaft is disconnected from the motor or transmission.
d.
Check the flap rigging and adjustments per Paragraphs 5-68 and 5-69.
e.
Install the access plates, panels, clamps, grommets and seats.
5-64. REMOVAL OF FLAP TRANSMISSION ASSEMBLY. (Refer to Figure 5-18.)
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 wing station 92.50.
b.
Disconnect the transmission tube (19) from the flap horn bracket (17).
c.
Remove the safety wire (12) and disconnect the flexible actuator shaft (4 and 6).
d.
Remove spreader bushing and washers (14) from between transmission attachment brackets.
e.
Remove the transmission from its mounting brackets and draw the unit through the access
opening in the wing false spar.
5-65. INSTALLATION OF FLAP TRANSMISSION ASSEMBLY. (Refer to Figure 5-18.)
a.
Lubricate the flap transmission assembly in accordance with lub chart.
b.
Insert the transmission through the access opening in the wing false spar and attach to its
mounting brackets. To allow the transmission to rotate, tighten the attachment bolts (28) only finger tight
and safety.
c.
Install the spreader bushing with one washer (14) between each mounting bracket and bushing.
Install the through bolt and secure.
d.
If working with the left transmission (7), connect the flexible actuator shaft (6) (per Paragraph
5-63) and safety with .040 safety wire. Attach the right flexible shaft (4) during rigging and adjustment.
e.
Check the flap rigging and adjustment per Paragraphs 5-68 and 5-69.
f.
Install access plates.
5-66. REMOVAL OF FLAP POSITION SENDER. (Refer to Figure 5-18.)
a.
Lower the flap and remove the access plates on the left wing false spar at wing stations 92.50 and
101.00
b.
Loosen the arm (22) on the sender shaft (21).
c.
Disconnect the electrical leads from the sender (23).
d.
Loosen the sender attachment nut and slide the sender from its mounting brackets.
e.
The flap limit switches (20 and 25) may be removed through these access openings if desired.
Revised: 10/5/83
SURFACE CONTROLS
Effectivity
DUKES
1J9
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