Piper TURBO ARROW III - Page 207

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TABLE VI-III. HYDRAULIC SYSTEM TROUBLESHOOTING (cont)
Pump fails to shut off § Nose gear down limit § Adjust switch actuator
though the gear has switch actuator out (Refer to Adjustment
fully extended. (cont) of adjustment. of Nose Gear Down
Limit Switch, Section
VII.)
§ Nose gear down limit § Replace switch.
switch failed.
§ Main gear down § Adjust switch (Refer
limit switch out to Adjustment of Main
of adjustment. Gear Down Limit
Switch, Section VII.)
§ Main gear down limit § Replace switch.
switch failed.
NOTE
The out of adjustment or failed switch may be determined by noting which
down light is not lit.
Pump running § Leakage of high § Remove pump and
intermittently pressure check valve. replace check valve.
after gear has
retracted.
§ Internal leakage of § Check auxiliary free
system. fall valve for internal
leakage.
§ Check gear actuating
cylinders for internal
leakage.
Extemal leakage of § Check back-up extension
system. unit valve or free fall
valve for external leakage
§ Check gear actuating
cylinders for external
leakage.
§ Applies to all airplanes.
Trouble Cause Remedy
Revised: 2/13/89
CHEROKEE ARROW III SERVICE MANUAL
HYDRAULIC SYSTEM