Adjustment Of Landing Gear Propeller Reverse Switch - Piper Cheyenne IIIA Airplane Maintenance Manual

PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
A. Nose Gear and Doors (continued)
Rudder
Pedal
Assembly
Fuselage
Station
57.00
Rudder Pedals Neutral Position
Figure 503
5. Alignment of Nose Gear (refer to 32-20-00 Figure 502) (continued)
(i) To check nose gear steering for 24 degree maximum right and 16 degree left travel, mark a line
on each side of the nose wheel for proper angle from centerline and wheel pivot point. Turn
wheel to maximum travel in both directions to check for allowable travel. Should travel be
exceeded in one direction and not enough in the other direction, check for possible damage to
the gear fork, torque links, or steering torque tube.
NOTE: To ensure full travel of the nose wheel, ensure no gaps exist at points where the
steering arm travel bushings contact with the steering bellcrank.
6. Adjustment of Landing Gear Propeller Reverse Switch
The propeller reverse switch is located on the nose gear torque link.
(a) Adjust switch to activate when the oleo strut is within 0.25 + 0.12 inches of its fully extended
position.
(b) Extend and compress strut to pressure switch actuates properly. Connect an ohmmeter to the
electrical leads of the switch. Measure the strut extension at the point where the switch closes.
The distance must be within range given in step (a).
(c) Check to be sure propellers move into their reverse position during taxi test.
CAUTION: DO NOT ATTEMPT TO MOVE THE POWER LEVERS INTO REVERSE WITH
THE ENGINES STATIC, AS DAMAGE WILL RESULT TO THE LINKAGE.
EFFECTIVITY:
040-999
PAGE
12 32-20-00
Jan
10/90