Landing Gear Warning System; Removal Of Gear Warning Switche S - Piper Navajo PA-31 Service Manual

PIPER NAVAJO SERVICE MANUAL
e.
f.
the door
Install the actuator cylinder rod to the door.
Turn the master switch ON and with gear selector in down position, actuate the hand pump
until
closes.
7-35. ADJUSTMENT OF LANDING GEAR SAFETY SWITCH. The landing gear safety switch, located on
the left main gear upper torque link, is adjusted so that the switch is actuated in the last .25 .13 inch of
oleo extension.
a.
Place airplane on jacks. (Refer to Jacking, Section II.)
b. Compress the strut until nine inches is obtained between the top of the gear fork and the bottom
of the gear housing. Hold the gear at this measurement.
c.
Adjust the switch down until it actuates at this point. Secure the switch.
d.
Extend and then compress the strut to ascertain that the switch will actuate in the last .25 + .13
inch of oleo extension.
e. Remove airplane from jacks.
7-36. LANDING GEAR WARNING SYSTEM.
7-37. REMOVAL OF GEAR WARNING SWITCHES. (Refer to Figure 7-12.) The gear warning switches
are located within the control pedestal, directly under the throttle controls. Each switch will actuate the
warning horn.
a. The switches may be removed from their mounting brackets by the following procedure:
1. Remove the top cover plates of the pedestal, one of which is forward of the control levers,
the other surrounds the levers, by removing their attachment screws.
2. Remove the switch from its mounting bracket by removing the two screws that secure either
switch and spacer block. First remove the nut from each screw, and allow the bracket of the other switch
and spacer block to swing full forward by turning the adjustment screw counterclockwise. Pull aft on the
switch bracket to be removed and push out the attachment screws.
3. Disconnect the necessary electrical leads.
b. The switch mounting brackets may be removed by removing the control lever assembly as
follows:
Revised: 3/11/81
LANDING GEAR AND BRAKE SYSTEM
2F19