Piper SARATOGA PA-32-301 Maintenance Manual page 387

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
REMOVAL AND INSTALLATION OF PRESSURE GAUGE. (Refer to Figure 35-7.)
1. Removal of the oxygen pressure gauge as follows:
A. The pressure gauge is tied into the same high pressure line as the recharge valve by means of a tee-
fitting at the tank regulator-control valve. A check-valve in the tank regulator control valve is depressed upon
installation of the high-pressure line allowing oxygen to enter the system. With the tank valve in the off posi-
tion, disconnect the high pressure line from the tank valve, slowly, to allow the line pressure to bleed-off. Cap
the line as soon as possible after removal.
B. Remove the snap-in retaining clips which secure the oxygen gauge cover to the overhead vent
panel and remove the cover.
C. Disconnect the high pressure line at the rear of the oxygen pressure gauge and cap the line.
D. Remove the hex nuts from the studs on the rear of the gauge and remove the gauge.
E. If the fitting on the rear of the instrument is to be reused, remove, clean threads, and using teflon
tape install fitting on new gauge. Refer to appropriate section this chapter.
2. Installation of the oxygen pressure gauge is as follows:
A. With the fitting installed on the rear of the gauge place the gauge in the support bracket, place the
retaining bracket into position over the rear of the gauge and secure with hex nuts.
B. Wrap teflon tape on threads of fitting (see appropriate section, this chapter) and install oxygen
line.
C. Reattach oxygen line fitting to tank.
REMOVAL OF OUTLETS.
1. Make sure the oxygen system is completely turned off. Insert an oxygen mask to release pressure. and
insure the system is off.
2. With a suitable spanner wrench, remove the outer half of the outlet.
3. Remove the screws retaining the trim panel and remove same.
4. The outlet can now be disconnected from the low pressure line(s). Make sure to cap lines immediately
after disconnection.
INSTALLATION OF OUTLETS.
1. Apply teflon tape to male threads of the affected fitting. Refer to appropriate procedure in this
chapter.
2. Connect the outlet to the low pressure line.
3. Position the trim panel and secure with screws.
4. Position and secure the outer half of the outlet with a suitable spanner wrench.
5. Torque the fittings onto the outlets to approximately 30 in.-lbs. Do not overtorque.
35-10-14
Page 35-15
2E22
Revised: August 19, 1980
2E22