f. Adjust the turnbuckle of the downlock mechanism by first ascertaining that the gear is down and
locked and then move the retraction fitting outboard until it contact the stop slot of the side brace link.
Hold the fitting in this position and turn the turnbuckle barrel until the downlock hooks make contact
with the lock pin. Safety the turnbuckle.
g. For easier adjustment of the downlock limit switch, it may be set at this time as given in Paragraph 7-
36.
h. Retract and extend the gear manually several times to ascertain that the side brace link falls through
center, the downlock hook falls into position and there is no binding of the gear assembly.
i. The gear should be adjusted in the up position to allow the gear fork to press lightly into the rubber
bumper pad on the wing. The adjustment may be accomplished as follows:
NOTE
If it requires less than .025 of an inch to move the gear into the correct
adjustment, steps 2 and 6 thru 8 need only be followed.
1. Ascertain that the rod end bearing of the actuating cylinder is disconnected from the retraction
fitting.
2. Actuate the hydraulic system to bring the hydraulic cylinder to the up position by turning the
master switch on, raising the emergency gear extension lever and moving the gear selector handle
to the up position. Retain the emergency extension lever in the up override position. The piston of
the cylinder should be bottomed. The retracted length of the cylinder is 10.92 inches.
3. Raise the gear by pushing up on the retraction fitting, thus disengaging the hooks, and pushing up
on the pivot point at the bottom of the side brace links to bring the links out of the locked position.
Raise the gear until the fork presses lightly into the rubber pad. Retain the gear in this position.
4. Loosen the jam nut on the piston rod of the actuating cylinder and turn the rod end bearing in or
out to allow a slip fit of the attachment bolt.
5. Install with the attachment bolt, bushing, spring swivel and secure with washer and nut. Install the
gear downlock spring.
6. When the gear is to within .125 of an inch of correct adjustment, the rod end need not be
disconnected and therefore all that will be required is to loosen the jam nut, place a wrench on the
flat at the end of the piston rod and turn to obtain correct adjustment.
7. Check the rod end bearing for adequate thread engagement and tighten jam nut.
8. If the downlock limit switch is properly adjusted, retract and extend the gear hydro-electrically to
ascertain that the gear operates properly.
Revised: 2/13/89
1K2
* CHEROKEE ARROW III SERVICE MANUAL
LANDING GEAR AND BRAKE SYSTEM
To Next Page
Loading...
Need help?
General