1I15
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
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
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
Summary of Contents for ARROW III
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