MAULE AEROSPACE TECHNOLOGY, INC.
MAINTENANCE MANUAL
FOR
M-7-235C
Rev. D
19/37
9. ELEVATOR TRIM:
Elevator trim tab movement is 12
°
±
2
°
up, 38
°
±
2
°
down. If adjustment is needed, it may
be done at the turnbuckles located just aft of the trim control. Proper cable tension is 15 to 25
lbs.
10. RUDDER TAB:
This tab is interconnected with the aileron system to automatically coordinate aileron and
rudder controls for simplified handling in the air. (It may be used as a rudder trim tab to make
the airplane trim in cruise.) This tab may be adjusted by changing to the position of the tab ca-
bles where they attach to the aileron cables located just over the front doors on the inside of
the airplane.
Normally, the tab should be streamlined with the rudder when the aileron and
rudder controls are centered.
The tab travel is 48
°
±
4
°
right or left. Proper cable tension is 5 to 10 lbs.
CAUTION: Make sure tab is free at extreme aileron travel.
NOTE: The “Rudder Trim Control” on the instrument panel pulls on a spring attached to the
right rudder pedal. It is not connected to the tab on the rudder.
LUBRICATION
1. Main wheel bearings - Use aircraft quality bearing grease.
2. Hydraulic brake reservoirs - Use Texaco Aircraft Hydraulic Oil 15 conforming to MIL-H-5606E,
or equivalent.
3. Control Column - Apply light coat of graphite base lubricant to aileron balance chain, torque
tube and control guide. Use lightweight motor oil or LPS #2* on all other bearings.
4. Use lightweight motor oil or LPS 2*:
•
Control pulley bearings and control surface hinges
•
Flap bellcrank and mechanism
•
Aileron and flap hinge
•
Elevator and trim tab -
5.
Tailwheel - Good quality wheel bearing grease to tailwheel bearings through zerk fitting.
Same for fork spindle roller bearings, if necessary. See tailwheel maintenance section under
"Landing Gear, Wheels and Brakes".
*LPS 3 recommended for airplanes operating in a potentially corrosive environment.
