14-66. INSTALLATION OF OXYGEN CYLINDER.
1. Before mounting cylinder to shelf, connect control cable to control valve-regulator. If the shelf has
been removed, reinstall it before continuing. Install Teflon tape per Section 14-60 application
instructions.
2. Position cylinder on shelf and install pressure lines. Insert tubing into fitting until ferrule seats in
fitting. Tighten nut be hand and then one quarter turn with a wrench. If fitting is relatively new, the nut
might be turned 3/4 of a turn. Follow up by snuggling nut slightly with a wrench.
3. Install cylinder protective shroud and tighten clamps securing it to the tank and valve.
4. Secure cylinder to shelf by connecting and tightening clamps.
5. If vent tube has been disconnected from the shroud, make sure it is firmly attached to both the cylinder
and valve shrouds.
6. Make sure all seals are properly in place in cylinder shroud. Make sure the MS35489-35 seal is in
bottom of shroud where low pressure line comes through. The two seals where high pressure lines go
into the shroud are MA35489-2 grommet seals.
7. Check pressure and refill bottle as necessary.
8. Inspect for leaks, especially at fittings that have been separated.
14-67. REMOVAL AND INSTALLATION OF PRESSURE GAUGE.
1. The pressure gauge is tied into the same high pressure line as the recharge valve, through a tee fitting
at the tank regulator-control valve. The high pressure line connects into the valve such that it actuates a
check valve permitting pressure to the line. Disconnect high pressure fitting at tank valve being careful
to only unscrew it a little at a time so as to allow pressure to bleed off. Cap lines as soon as possible
after removal.
2. Remove overhaul vent panel and remove instrument from bracket as follows:
a.
Disconnect tube from fitting at rear of instrument.
b. Immediately cap oxygen line.
c.
Snap off clip securing instrument in its bracket.
d. If the fitting on rear of instrument is to be reused, remove, clean threads, and using tape, install
fitting on new gauge. Refer to instruction, Section 14-60.
3. Install gauge as follows:
a.
With fitting installed on rear of instrument, install gauge in bracket. Make sure clip is properly
secure.
b. Remove cap from oxygen line and with Teflon tape properly installed, connect oxygen line to
fitting.
c.
Install fitting in tank.
14-68. REMOVAL OF OUTLETS.
CAUTION
Ensure that all lines are capped after disconnection to prevent
contamination.
1. Make sure oxygen system is completely turned off. Insert an oxygen mask to release pressure and
ensure the system is off.
2. With a suitable spanner wrench, remove outer half of outlet.
3. Remove screws retaining 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.
Revised: 2/13/89
3C11
CHEROKEE ARROW III SERVICE MANUAL
ACCESSORIES AND UTILITIES
Summary of Contents for ARROW III
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