Piper Navajo PA-31 Service Manual page 985

PIPER NAVAJO SERVICE MANUAL
TABLE XIV-I.
Trouble
TROUBLESHOOTING CHART (OXYGEN SYSTEM)
Cause Remedy
No indication of pres -
sure on pressure
gauge.
Cylinder empty or leak
in system has ex-
hausted pressure.
Charge system and
check for leaks.
Pressure gauge defec-
tive.
Replace pressure
gauge.
Pressure indication
normal but no oxygen
flowing.
Offensive odors in
oxygen.
Oxygen cylinder reg-
ulator assembly
defective.
Cylinder pressure
below 50 psi.
Foreign matter has
entered the system
during previous ser-
vicing.
Replace regulator as-
sembly.
Purge the oxygen sys-
tem. Refer to Para-
graph 14-17.
Reissued: 10/12/79 ACCESSORIES AND UTILITIES
5E12