Removal Of Instruments; Installation Of Instruments - Piper Navajo Chieftain PA-31-350 Service Manual

10-5. REMOVAL OF INSTRUMENTS.
a. The non-shock-mounted instruments located in the center and along the bottom of the
instrument panel may be removed by the following procedure:
1. At the back of the panel, unscrew the electrical connector from the post light(s).
2.
Disconnect the plumbing and/or electrical connector from the back of the instrument.
Where two or more lines connect to an instrument, identify each line to facilitate reinstallation. Attach a
dust cap or plug to each fitting.
3. Remove the post light(s) by turning off nut.
4. Remove the screws that secure the instrument in the panel cutout.
5. Remove the instrument from the panel.
b.
The shock-mounted instruments may be removed by the following procedure:
1. Unsnap the forward side of the instrument panel cover and slide forward enough to allow it
to move from its attachment slot. Remove the cover from over the panel.
2. Pull the control wheel that is at the opposite side of the instrument panel from where the
shock-mounted panel is to be removed, to its aftmost position and secure with a cord tied between the
wheel and around the seat back.
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.
10-6. 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.
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.
Reissued: 9/23/80
INSTRUMENTS
3A13
NAVAJO CHIEFTAIN SERVICE MANUAL