PIPER SENECA II SERVICE MANUAL
04/30/07 VII - LANDING GEAR AND BRAKE SYSTEM
1K21
7-25b. MAIN GEAR DOOR ASSEMBLY.
7-26. REMOVAL.
a. With the landing gear extended, disconnect the door retraction rod from the door by removing nut,
washers and bolt.
b. Remove the door from the wing panel by bending the door hinge pin straight and from the other end
pulling out the pin.
c. The door retraction rod may be removed from the gear housing by cutting the safety wire and
removing the attachment bolt and washer. Note the number of washers between rod end bearing and
housing.
7-27. CLEANING, INSPECTION AND REPAIR.
a. Clean the door and retraction rod with a suitable cleaning solvent.
b. Inspect the door for cracks or damage, loose or damaged hinges and brackets.
c. Inspect the door retraction rod and end bearing for damage and corrosion.
d. Repairs to a door may be replacement of hinge, repair of fiberglass and painting.
7-28. INSTALLATION.
a. Install the door by positioning the hinge halves of the door and wing, and inserting the hinge pin. It
is recommended a new pin be used. Bend the end of the pin to secure in place.
b. Install the door retraction rod by positioning the rod at its attachment points at the door and strut
housing. At the door attachment, thin washers are inserted at each side of the rod end bearing and it
is secured with bolt, washer and nut. At the strut housing, place washers between rod end bearing
and housing not to exceed .12 of an inch to obtain proper clearance and secure with bolt. Safety bolt
with MS20995C41 wire.
c. Check that the all around clearance between the door and the wing skin is not less than .032 of an
inch.
7-29. ADJUSTMENT.
a. Place the airplane on jacks.
b. Determine that the main gear is properly adjusted for gear up as explained in Paragraph 7-24.
c. Adjust retraction rod end at door so that door will pull up tightly when the gear is full up. Over-
tightening may result in door buckling; however, if the door is too loose, it will gap in flight.
d. Check all rod ends for adequate thread engagement, for safety and tightness of jam nuts.
e. Remove airplane from jacks.
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