Adjustment Of Nose Gear Down Limit Switch; Adjustment Of Main Gear Up Limit Switch - Piper ARROW III Service Manual

Figure 7-12. Adjustment of Nose
Gear Down Limit Switch
7-34. ADJUSTMENT OF NOSE GEAR DOWN LIMIT SWITCH. The gear down limit switch is mounted on
the horizontal support tube of the engine mount that runs between the tight attachment points of the gear
housing and upper drag link.
a. Ascertain that the gear is down and locked.
b. The down limit switch should actuate only after the leading edge of the downlock hook, when moving
to the locked position, has passed the downlock roller by .06 of an inch. (Refer to Figure 7-12.)
Position the hook at this location in relation to the roller by moving the actuator piston manually
toward the up position. The downlock spring may be disconnected, if desired.
c. Loosen the attachment screws of the actuator located on the downlock hook and move it toward the
switch until it is heard to actuate. Retighten the actuator screws.
d. Manually move the hook from the locked to the unlocked position and ascertain that the switch
actuates at the correct location of the hook.
e. Retract and extend the gear electrically by turning the master switch on, raising the emergency gear
extension lever and moving the gear selector handle to the up position. As the gear begins to retract,
the green light below the selector should go out and the red gear unsafe light at the top of the
instrument panel should come on.
7-35. ADJUSTMENT OF MAIN GEAR UP LIMIT SWITCH. A gear up limit switch is located in each wheel
well above the door hinge. There is no adjustment of these switches other than check that the gear, when
retracting, will actuate the switch within .88 of an inch of full up. Switch operation turns the red gear unsafe
light out.
Revised: 2/13/89
* CHEROKEE ARROW III SERVICE MANUAL
Figure 7-13. Adjustment of Main Gear
Down Limit Switch
LANDING GEAR AND BRAKE SYSTEM
1K6