Piper PA-32R-301T SARATOGA S, Руководство по обслуживанию

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POSITION AND WARNING (Cont.)
ADJUSTMENT OF MAIN GEAR DOWN LIMIT SWITCH
A gear down limit switch is mounted on a bracket which is attached to lower drag link of each main gear.
Switch should be adjusted to allow it to actuate thus turning on green indicator light in cockpit when
downlock hook has entered locked position and is within .025 and .035 of an inch of contacting downlock
pin. (Refer to appropriate Figure 28.) Adjustment of switch may be as follows:
1. Ascertain that main gear downlock is properly adjusted as described in Adjustment of Main Landing
Gear.
2. Raise airplane on jacks. (Refer to Jacking, Chapter 7.)
3. Ascertain landing gear is down and pressure is relieved from hydraulic system. To relieve pressure,
hold down emergency extender lever as necessary (insure override is not in uplock position).
4. Raise downlock hook assembly and place a .030 of an inch feeler gauge between horizontal surface of
hook that is next to switch (surface that contacts downlock pin) and rounded surface of pin. Lower
hook and allow it to rest on feeler gauge.
5. Loosen attaching screws of switch and, while pushing up on center of link assembly, rotate switch
toward hook until it is heard to actuate. Retighten attaching screws of switch.
6. Manually move hook assembly up from pin until hook nearly disengages from pin. Then, with pressure
against bottom of link assembly, move back to ascertain that switch actuates within .025 to .035 of an
inch of full lock.
7. Retract and extend gear hydraulically by turning master switch on, raising emergency gear extension
lever and moving gear selector handle to up position. As gear begins to retract, green light below
selector should go out and red gear unsafe light at top of instrument panel should come on.
ADJUSTMENT OF LANDING GEAR SAFETY SWITCH (SQUAT SWITCH)
– CAUTION –
If squat switch must be replaced, refer to SB 938, or determine
if protective sleeve is installled on squat switch harness at
switch bracket.
Landing gear safety switch, located on left main gear housing is adjusted so that switch is actuated within
last quarter of an inch of gear extension.
1. Compress strut until 7.875 inches is obtained between top of gear fork and bottom of gear housing.
Hold gear at this measurement.
2. Adjust switch down until it actuates at this point. Secure switch.
3. Extend and then compress strut to ascertain that switch will actuate within last quarter of an inch of
oleo extension.
PIPER AIRCRAFT
PA-32R-301/301T
MAINTENANCE MANUAL
32-60-00
Page 32-75
Reissued: July 1, 1993
3D20