PIPER CHEROKEE SIX / LANCE SERVICE MANUAL
07/15/06
VA - HYDRAULIC SYSTEM
1J21
CAUTION: THE MICRO SWITCH (21) AND ECCENTRIC BOLT (35) MUST NOT BE
ADJUSTED. THESE COMPONENTS ARE SET AT THE FACTORY UNDER
SPECIFIC CONDITIONS, WITH THE USE OF SPECIAL SET-UP EQUIPMENT.
NOTE: This adjustment will require two persons, a qualified pilot and a mechanic to set the
actuator adjustment screw (2).
1.
Remove the center seats and floorboard.
2.
The pivot screw (20) should be torqued 8 to 10 inch-pounds.
3.
Loosen the jam nut (28) of the adjustment screw (2).
4.
Ascertain that the electrical switch (21) will actuate with the use of the emergency gear
extension lever.
5.
Fly the airplane (refer to Owner’s Handbook). Should the spring tension be out of adjustment
very much, it may be necessary to assist gear retraction with the use of the emergency gear
extension lever moved to the up override position.
6.
Loosen the adjustment screw (2) by turning counterclockwise until spring (24) tension is free.
WARNING: WHILE MAKING ADJUSTMENTS, DO NOT LAY TOOLS IN AREA
EXPOSED BY THE REMOVAL OF FLOORBOARD. THIS MAY INTERFERE
WITH AIRPLANE CONTROLS.
7.
With the airplane at a safe altitude, slow the airplane to a glide of 125 MPH (109 Kts) with the
gear selector handle up and the throttle reduced to power OFF. (Gear unsafe light and horn will
indicate when power is reduced.) At 125 MPH (109 Kts), slow the airplane at a rate of one ( l)
MPH per second until 118 MPH ( 103 Kts) is obtained, hold the airplane at this speed.
NOTE: Adjustment of the nut (32) may be necessary to increase or decrease the spread
between the gear up and gear down actuation speeds. To expand the spread between
these speeds, loosen the nut. Tighten the nut to bring the airspeeds closer together.
Whenever the nut is adjusted, it may be necessary to readjust the tension on the
springs (24) and to repeat the nut adjustment procedure. CAUTION should be
observed so as not to disturb the position of eccentric bolt (35) in relation to the rest of
the unit.
Summary of Contents for Cherokee LANCE
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