Piper Arrow IV Turbo Maintenance Manual page 449

CHART 3501. TROUBLESHOOTING (OXYGEN SYSTEM) (cont)
Trouble
Effective pressure indicated but
no oxygen flow with clear lines.
Offensive odors in oxygen .
NOTES:
1 Fixed oxygen system affected only.
2 Portable oxygen system affected only.
CREW/PASSENGER SYSTEM.
Do not attempt to tighten any connections while the system is
charged.
Bottles which have been evacuated to 5 psi for a significant
length of time, or those that do not produce an audible hissing
sound when the valve is cracked, should be removed and
hydrostatically tested. If either of these conditions has existed for
a significant length of time it also is recommended that the
system be purged. Make sure that no oil, grease, hydraulic fluid,
or fuel is in the vicinity of any fittings being serviced.
Do not thread lubricant of any kind. Teflon tape (M.M.M. No. 48)
should be used on TAPERED pipe threads without the tape
extending beyond the first thread, refer to affective information
in this chapter.
Before working with the system make sure the aircraft is
electrically grounded, and your hands and cloths are free of oil,
grease, and dirt.
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
Cause
Oxygen cylinder regulator
assembly defective.
Cylinder pressure below 5 psi, or
foreign matter in system.
—CAUTION—
2H2
Remedy
Vacate bottle and replace
regulator assembly. 1
Return to manufacturer or have
repaired by an approved shop.
Purge oxygen system as
prescribed in this chapter.
35-10-00
Page 35-04
Added: November 6, 1979
2