Piper Cherokee Six - Page 247

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
TABLE
VA-III. HYDRAULIC
SYSTEM
TROUBLESHOOTING
(cont.)
Trouble
I
Cause
Remedy
NOTE
The
out of
adjustment
or
failed
switch
may
be
noting
which
down
light
is not
lit.
determined
by
Pump running inter-
mittently
after
gear
has retracted.
Leakage
of
high pres-
sure check valve.
Internal
leakage
of
system.
Remove
pump and
re-
place
check
valve.
Check auxiliary retrac-
tion unit valve for
internal
leakage.
Check gear actuating
cylinders
for
internal
leakage.
External
leakage
of
system.
Check back-up
exten-
sion unit
valve
for
external leakage.
Check gear
actuating
cylinders
for external
leakage.
Check for broken or
damaged
hydraulic
lines.
Gear stops
part
way
up, but
pump
con-
tinues to run.
Pump high pressure
relief valve out of
adjustment.
Replace
pump.
HYDRAULIC SYSTEM
Issued:
7/28/75
1K7