Piper Cherokee Six Service Manual page 243

PIPER CHEROKEE SIX SERVICE MANUAL
TABLE VA-III. HYDRAULIC SYSTEM TROUBLESHOOTING (cont.)
Trouble
Cause Remedy
Landing gear extension
system fails to oper-
ate. (cont.)
Pump extension sole-
noid inoperative
(outboard sole-
noid).
Replace solenoid.
NOTE
If the extension solenoid of the pump can be heard to
actuate when operating the gear selector switch, it may be
assumed that the gear control circuit is operating properly
and the actuator circuit should be further checked.
Gear selector switch
ground incomplete.
Gear selector switch
inoperative.
Hydraulic pump ground
incomplete.
Hydraulic pump inop-
erative.
Hydraulic fluid in
reservoir below
operating level.
Low or dead battery.
Check ground.
Replace switch.
Check ground.
Replace or overhaul
pump.
Fill reservoir with
hydraulic fluid.
Check condition of
battery.
HYDRAULIC SYSTEM
Issued: 7/28/75
1K3