Piper Navajo PA-31 Service Manual page 642

PIPER NAVAJO SERVICE MANUAL
3. Pad the control wheel tube with foam rubber or similar material.
4. Remove the four self-locking nuts that secure the floating panel to its shock
mounts. There is one nut located on the panel at each side of the control wheel tube and one nut
located at each side of the panel, near the top. With an open end wrench held next to the back
side of the panel, hold the rubber mounts to eliminate twisting as the nuts are being removed.
5. Pull the panel back and allow it to rest on the padded control wheel tube.
6. Unscrew the electrical connector from the post light(s).
7. Disconnect the plumbing and/or electrical connector from the back of the
instrument and identify each line to facilitate reinstallation. Attach a dust cap or plug to each
fitting.
8. Remove the post light(s) by turning off nut.
9. Remove the screws that secure the instrument in the panel cutout.
10. Remove the instrument from the panel and secure the panel from rolling off the
control tube.
11. Check the general condition of the rubber shock mounts and replace if
necessary.
10-10. INSTALLATION OF INSTRUMENTS.
a. The non-shock-mounted instruments may be installed by the following procedure:
1. Place the instrument in its proper panel cutout and secure with screws.
2. Install the post light(s) and secure. Do not over tighten nut.
3. Connect the plumbing and/or electrical connector to back of instrument.
4. Connect the electrical connector of the post light(s). Tighten connector finger
tight.
5. Check instrument and post light(s) operation.
b. The shock-mounted instruments may be installed by the following procedure:
1. Place the instrument in its proper panel cutout and secure with screws.
2. Install the post light(s) and secure. Do not overtighten nut.
3. Connect the plumbing and/or electrical connector to back of instrument. (Refer
to step c. for gyro fitting installation)
4. Connect the electrical connector of the post light(s). Tighten connector finger
tight.
5. Ascertain that one end of the ground straps is placed over the panel side of the
shock mount stud.
6. Place the floating panel in position and allow the shock-mount attachment studs
to protrude through the panel. Install and tighten attachment nuts.
7. Remove the padding and release the control wheel.
8. Check the instrument and post light operation.
CAUTION
Do not use thread lube on fitting or in parts of gyros. The use of
thread lube can cause contamination which shortens the life
expectancy of the gyro and can cause premature failures. Any
evidence of thread lube will create a WARRANTY VOID
CONDITION. Make sure that all air lines are clean and free of
oil, grease, pipe compound, or any foreign material and/or
residue before connecting lines to gyro.
Reissued: 10/12/79
INSTRUMENTS
3D4