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PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
07/15/06
VA - HYDRAULIC SYSTEM
1J17
5A-11. GEAR BACK-UP EXTENDER ACTUATOR ASSEMBLY.
The Piper Back-Up Gear Extender System (“the System”), addressed here as originally installed in the
PA-32R-300, when properly operated and maintained, automatically extends the landing gear when
airspeed falls below a certain value and prevents the landing gear from retracting before a certain
airspeed is attained. The System can also be deactivated (“overridden”) by the pilot.
CAUTION: OWNERS/OPERATORS WHO CHOOSE TO CONTINUE OPERATION OF THEIR
AIRCRAFT WITH THE BACK-UP GEAR EXTENDER SYSTEM INSTALLED AND
FUNCTIONING MUST ENSURE A COPY OF PIPER SERVICE BULLETIN NO. 866A
(OR LATEST REVISION) IS PERMANENTLY ATTACHED TO THE AIRPLANE
FLIGHT MANUAL (AFM) OR PILOT’S OPERATING HANDBOOK (POH) AND THAT
ALL PERSONS OPERATING AS PILOT-IN-COMMAND COMPLY WITH ITS
REQUIREMENTS.
NOTE: Owners/operators wishing to permanently remove the Back-Up Gear Extender System can do
so by installing Piper Kit No. 765-199.
5A-12. REMOVAL OF GEAR BACK-UP EXTENDER ACTUATOR ASSEMBLY. (Refer to Figure 5A-7.)
The back-up extender actuator is located under the center seat floorboard. To reach the actuator, remove
the center seats and floorboard.
a.
Disconnect the actuator electrical leads at the quick disconnect terminals.
b.
Disconnect the manual override control rod (30) at the actuator control arm (19) by removing cotter
pin, washers, and clevis pin (1).
c.
Disconnect the pressure (13) and static (11) hoses from the elbows (12) of the diaphragm housing
(10) by releasing clamps and sliding the hoses from their elbows. The hoses should be tagged for
ease of reassembly.
d.
Place a shop cloth under the actuator hydraulic valve (25) to absorb fluid, and then disconnect the
hydraulic tubes (26, 39, 40 and 41) from cross (38) and tee (46). Cover open tubes and fittings to
prevent contamination.
e.
Remove the hardware that secure the actuator base to the mounting brackets. There are two
mounting bolts at the inboard side of the base and one mounting screw at the outboard side of the
diaphragm housing. Remove the actuator from the mounting brackets.
Summary of Contents for Cherokee LANCE
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