THE NEW PIPER AIRCRAFT, INC.
PA-32-301FT / 301XTC
MAINTENANCE MANUAL
PAGE 2
Jun 1/03
3J20
37-00-00
CHART 1 (Sheet 1 of 2)
TROUBLESHOOTING VACUUM SYSTEM
Trouble Cause Remedy
No vacuum gauge indication. Open vacuum line. Locate and repair.
Faulty instrument. Replace.
No vacuum gauge indication Faulty gauge and/or Replace gauge, and/or
at instrument or source. malfunctioning pump(s). pump(s).
Low vacuum system Filter dirty. Clean or replace filter.
indications.
Vacuum regulator valve Adjust regulator valve as
needs adjusting. per adjustment instructions
in 37-10-00.
Restrictions in gyros to Repair or replace line.
filter line.
Pump(s) to gyros line Check all lines and fittings.
leaking.
Abnormal gyro precession and Dirty filter. Replace filter and adjust
vacuum gauge reading regulator.
correct or at maximum
pressure.
Normal vacuum indication but Faulty instrument. Replace instrument.
sluggish operation of instruments.
Dirty or clogged filter Replace filter.
Vacuum line kinked. Repair lines.
High System vacuum. Vacuum regulator is improperly Adjust regulator properly.
adjusted.
Dirty or clogged filter. Replace filter.
Vacuum lines bent, kinked, Repair or replace
or restricted.lines.
Vacuum regulator sticking or Clean screen and check
dirty screen. regulator operation.
Regulator cannot be adjusted Lines leaking. Check all lines and fittings.
to maintain correct pressure.
Vacuum pump(s) malfunctioning. Replace pump(s).
Vacuum correct on ground, but Vacuum pump(s) malfunctioning. Replace pump(s).
will not maintain pressure at
altitude.
Regulator sticky. Clean regulator.
To Next Page
Loading...
Need help?
General