Vacuum Test Selector Valve.; Removal Of Vacuum Test Selector Valve; Installation Of Vacuum Test Selector Valve; Manifold Pressure Gauge Filters - Piper APACHE PA-23-235 Service Manual

PIPER AZTEC SERVICE MANUAL
10-22. VACUUM TEST SELECTOR VALVE. PA-23-250, PA-23-235 and PA-23-250 (six
place), Serial Nos. 27-2000 to 27-2504 incl.
10-23. REMOVAL OF VACUUM TEST SELECTOR VALVE.
a. Remove the royalite trim panel by removing attaching screws. If instrument lighting
is installed, disconnect the electrical connector along the bottom of the trim panel.
b. Disconnect and cap the vacuum lines connected to the valve. The lines should be
marked for identification and ease of installation.
NOTE
It may be necessary to remove the glove compartment, by
removing the attaching machine screws, to gain access to the
selector valve.
c. Remove the machine screws and nuts securing the valve to the instrument panel and
remove the valve.
NOTE
All open vacuum lines should be covered to prevent dust or
other foreign material from entering the system.
10-24. INSTALLATION OF VACUUM TEST SELECTOR VALVE.
a. Position the test selector valve to the instrument panel and secure with machine
screws and nuts.
b. Uncap and connect the five vacuum lines to the selector valve.
c. If the glove compartment was removed, reinstall at this time, and secure with
machine screws.
d. Install the royalite trim panel and secure with attaching screws. If instrument
lighting is installed, connect the electrical connector along the bottom of the trim panel
prior to installation.
10-25. MANIFOLD PRESSURE GAUGE FILTERS (Turbocharger Installation Only). The
manifold pressure gauge has two filter assemblies secured to the rear of the gauge. The
removal of the top instrument access panel is necessary to gain access to the filter
assemblies. Remove the two filter assemblies and replace the filter elements during the 500
hour inspection of the airplane.
INSTRUMENTS
4B10
Reissued: 2/18/81
4B10