MAULE Jetasen M-4 Maintenance Manual page 14

4. TAIL ASSEMBLY:
With the airplane in level position, the stabilizers should be leveled at their rear spars.
The hinge line should be straight from tip to tip. The vertical stabilizer should be plumb at
the hinge.
5. AILERONS:
Adjust the ailerons to streamline position by placing a straight edge on the bottom of
the wing, chordwise, at the inboard end of the aileron. Then adjust the turnbuckles in the
aileron system so the control wheels are centered and there is a gap of zero to ¼ inch
between the straight edge and the trailing edge of the aileron.
Check the aileron travel for 20° ±1° up and 20° ±1° down. Adjust turnbuckles to stay
within these limits. Proper cable tension is 15 to 25 lbs.
6. FLAPS:
Correct flap operation is dependent upon correct cable tension which is controlled by
the spring on the bellcrank in the wing. If the spring tension has diminished due to use or
over extension, this will reduce the degree of flap extension due to air loads on the flaps.
If springs appear weak, remove and check the spring tension. One inch of travel should
yield a force of twelve (12) to fifteen (15) pounds. If the tension is less than above, re-
place both springs with new springs.
After verifying acceptable spring tension, check cable adjustment. Changes can be
made to the flap retract cable via the turnbuckle located behind the rear cabin bulkhead
cover. Adjust retract cable as tight as possible without moving flap from its 0° position.
A limit cable is installed at the inboard flap hinge, which should be adjusted so that
the flaps will not hit the rear windows. The cable must allow the correct full flap angle
(35°).
The bellcrank in each wing should rest against the cork pad glued to the rear wing
spar while in the retracted position. While the bellcrank is in the retracted position the
flaps should be set to 0° plus or minus one half (1/2) degree using the push rod located
on each flap.
To adjust the balance cable turnbuckle located above the headliner above the aileron
turnbuckles, slowly extend the flaps while watching both left and right flaps. They should
initially extend evenly and together. If on the initial extension, the flaps do not extend
symmetrically, tighten or loosen the turnbuckle as required.
After the above adjustments have been made you should check for proper deflec-
tions: 15° first notch and 35° second notch ± 3°.
Rev. B
4/13/16
MAULE AIRCRAFT CORPORATION
MAINTENANCE MANUAL
M-4/C/S/T
FOR
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