Installation Of Main Gear Door Assembly; Adjustment Of Main Gear Door Assembly; Landing Gear Limit Switches; Adjustment Of Nose Gear Up Limit Switch - Piper ARROW III Service Manual

7-30. INSTALLATION OF MAIN GEAR DOOR ASSEMBLY.

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 . l 2 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.

7-31. ADJUSTMENT OF MAIN GEAR DOOR ASSEMBLY.

a. Place the airplane on jacks. (Refer to Jacking, Section II.)
b. Ascertain that the main gear is properly adjusted for gear up as given in Paragraph 7-26.
c. Adjust the retraction rod end at the door so that the 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 the airplane from jacks.

7-32. LANDING GEAR LIMIT SWITCHES.

All adjustments of the limit switches should be made with the airplane on
jacks. (Refer to Jacking, Section II.)
Do not bend the actuator springs mounted on the limit switches.
7-33. ADJUSTMENT OF NOSE GEAR UP LIMIT SWITCH. The gear up limit switch is mounted on a
bracket on the engine mount above the point where the right side of the upper drag link attaches to the engine
mount.
a. To facilitate adjustment of the limit switch, disconnect the gear doors or remove the bottom cowl, as
desired.
b. Retract the landing gear by turning the master switch on, raising the emergency gear extension lever
and moving the gear selector handle to the up position. Retain the emergency extension lever in the up
position and turn the master switch off.
c. Block the nose gear in the up position and then slowly release the emergency extension lever. This will
relieve hydraulic pressure and the main gears will drop.
d. Place a .027 of an inch spacer on the oleo strut housing between the housing and the crossover tube
where the steering arm attaches. Push the gear up tight and block.
e. Loosen the attachment screws of the switch and rotate the switch toward the actuator tang until it is
heard to actuate. Retighten the attachment screws of the switch.
f. Manually move the gear up and down only as far as necessary to ascertain that the switch actuates at
the correct position. Remove the block from under the gear and allow it to slowly extend.
g. Retract the gear electrically and ascertain that the red gear unsafe light will go out when the gear has
retracted and the pump has shut off.
Revised: 2/13/89
* CHEROKEE ARROW III SERVICE MANUAL
NOTE
NOTE
LANDING GEAR AND BRAKE SYSTEM
1K5