Piper PA-28RT-201T - Page 334

29-00-02
Page 29-13
December 1, 1978
2C7
CHART 2901. HYDRAULIC SYSTEM TROUBLESHOOTING (cont.)
Gear stops part way up, Pump high pressure relief Replace pump.
but pump continues to run. valve out of adjustment.
Internal leakage of system. Check back-up extension
unit valve for internal
leakage.
Check gear actuating
cylinders for internal
leakage.
Check for broken or
damaged hydraulic lines.
Hydraulic fluid in reservoir Fill reservoir with hydraulic
below operating level. fluid.
All gears fail to free-fall. Back-up extension unit Check unit and valve and
valve fails to open. replace.
Gear free-falls at airspeeds Back-up extender unit Check extender unit spring
above that required. hydraulic valve fails to adjustment.
close.
Check hydraulic valve for
sticking open.
Check extender unit
diaphragm for damage.
Check for restriction in air
pressure and static lines.
Landing gear fails to operate Manual control rod between Form the rod to allow clear-
at required speeds. (Gear up override lever (manual ex- ance through full fore and
at 103 KIAS for PA-28RT- truder) and rear seat rub- aft travel.
201T or 95 KIAS for bing or chafing on spar web
PA-28RT-201, gear down at where rod passes beneath
78 KIAS for PA-28RT- the spar.
201T or 75 KIAS
for PA-28RT-201.
Trouble Cause Remedy
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL