Piper Navajo PA-31 Service Manual page 83

PIPER NAVAJO SERVICE MANUAL
3-6. OVERLIMITS INSPECTION. If the airplane has been operated so that any of its components have
exceeded their maximum operational limits, check with the appropriate manufacturer.
3-7. PROGRESSIVE INSPECTION. The progressive inspection was designed to permit the utilization of
the aircraft, by scheduling inspections through the use of a planned inspection schedule. For further
information, contact Piper Customer Service.
SB
3-8. INSPECTION OF WING FLAP TRANSMISSION. (Dukes System S N 31-5-31-7812129 incl.)
(Refer to Figure 3-1 ) The flap transmissions are inspected at every 100 hour inspection cycle of the aircraft.
This is accomplished without removal of the transmissions. by the following procedures:
a.
Position the flaps in the extended position (Down), and insure rollers are not bottomed in slots.
b.
Remove the access covers on the lower wing surface to gain access to the flap transmissions.
c.
With the use of vise grip pliers and exerting light pressure, grasp the exposed portion of the screw
close to the transmission as shown. (Refer to Views A and B.)
d.
With the pliers secured to the screw, a light pressure will move the pliers and screw as free play in
the transmission gear set is taken up in either direction. Do not force the pliers.
e.
Place a six inch ruler along the skin surface as shown in View B, and measure the overall distance
the pliers move.
f. Should this dimension exceed .32(5 16) of an inch. replace the transmission assembly or purchase
Gear Transmission Kit 755 051 (Refer to Section V. Paragraphs 5-62 and 5-63 for transmission removal and
installation.)
NOTE
If replacement of transmission gears is required. perform
transmission run-in procedure as described in Appendix A. of the
latest revision to Piper S B 494B.
g. Reinstall the access panels and make appropriate logbook entry
h. Continue inspection at 100 hour intervals.
3-8a. INSPECTION OF WING FLAP TRANSMISSION. (Calco.) (Refer to Figure 3-1) The flap
transmissions are inspected at the first 500 hour inspection cycle of the aircraft and at each 100 hours
thereafter This is accomplished without removal of the transmission, by the following procedures:
a. Position the flaps in the extended position (Down).
b Remove the access covers on the lower wing surface to gain access to the flap transmissions.
c. With the use of vise grip pliers and exerting light pressure. grasp the exposed portion of the screw
close to the transmission as shown. (Refer to Views A and B.)
d. With the pliers secured to the screw. a light pressure
will
move the pliers and screw as free play in
the transmission gear set is taken up in either direction. Do not force the pliers.
e. Place a six inch ruler along the skin surface as shown in View B. and measure the overall distance
the pliers move.
t Should the dimension exceed .300 of an inch. replace the transmission assembly
g. Reinstall the access panels and make appropriate logbook entry
h. Continue inspection at 100 hour intervals.
Revised: 3/2/84 INSPECTION
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