Installation Of Main Gear Actuating Cylinder; Hydraulic Lines - Piper Lance II Service Manual

LANCE II SERVICE MANUAL
6-26. INSTALLATION OF MAIN GEAR ACTUATING CYLINDER.
a. Attach the cylinder to its attachment fitting in the wheel well using bolt and nut.
b. Attach the operating rod end and downlock spring swivel fitting to the upper side
brace retraction fitting by using bolt, washer and nut. Ascertain swivel fitting is free to
rotate.
c. Connect the downlock spring to the swivel fitting.
d. Check the adjustment of the cylinder rod end. (Refer to Adjustment of Main
Landing Gear, Section VII.)
e. Operate pump to purge system of air and check fluid level in reservoir.
f. Remove the airplane from jacks.
6-27. HYDRAULIC LINES.
6-28. REMOVAL AND INSTALLATION OF HYDRAULIC LINES. Remove a damaged
hydraulic line by disconnecting the fitting at each end and by disconnecting where secured
by brackets. Refer to Figure 6-2 as an aid in the location of attaching brackets and bends in
the lines. Provide a small container for draining the line. Install a new or repaired line in
reverse. Operate the pump to purge the system of air and check fluid level in reservoir.
6-29. TESTING HYDRAULIC SYSTEM. The hydraulic system should be tested to
determine that it functions properly after performing any service or repairs. It is suggested
that the airplane be connected to an outside power source in order to conserve the battery.
(Refer to External Power Receptacle, Section II.)
CAUTION
Turn master switch OFF before inserting or removing
external power supply plug.
a. Place airplane on jacks. (Refer to Jacking, Section II.)
b. With gear down, master switch ON, and circuit breaker closed, place landing gear
selector switch in the UP position. The pump should immediately start operating and the
gear retract. The red gear unsafe light on the instrument panel should light up until the gear
is fully retracted. The hydraulic pump should stop operating after full gear retraction.
c. Place gear selector switch in DOWN position. The gear should extend and lock in
position. Gear down lights on the instrument panel will light up when all three gears are
locked in position. Inspect hydraulic system for leakage of hydraulic fluid.
d. Recycle the landing gear to determine that it functions properly.
CAUTION
Prior to removing the airplane from jacks, turn master switch
on and determine that all three green lights are energized.
This will indicate the landing gear is down and locked.
Issued: 1/3/78
HYDRAULIC SYSTEM
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