MAULE AIRCRAFT CORPORATION
MAINTENANCE MANUAL
FOR
M-4/C/S/T
8
Rev. B
4/13/16
quirements at the 24-month intervals. Also, inspect the area around the holes(s) fre-
quently for corrosion or cracking (ref. Maule Service Letter #58).
8. Remove wheels and inspect wheels, tires, brake drums/disc, bearings, brake lines
and brake pad for wear, cuts, chafing, leaks and general condition. Repack wheel
bearings.
9. Remove landing gear top fairings and inspect attaching fittings and bolts for securi-
ty, corrosion and cracks and inspect brake hose for security, chafing and leaks.
Check oleo attach bolts for bending or shearing.
10. The oleo springs occasionally become overstressed and weak due to hard usage,
and if so should be replaced. This can usually be detected if the airplane sits wing
low on a level surface or if the wheel camber is negative.
CAUTION: Check fluid level in the landing gear oleo struts. Fill to overflowing (no air).
CAUTION: Use Steps 9 and 10 above as a guide for inspection after an unusually hard
landing or any time there is concern about the condition of the main landing gears or
their attachments.
11. Remove all inspection covers/plates and inspect all visible control cables, pulleys,
bellcranks, electrical wires and connections, fuel lines and fittings, nuts, bolts, etc.
for security, chafing, leaks, etc.
12. CAUTION: At inspection hole in tail, visually check the pivoting action at the control
cable attachment points over the full range of rudder and elevator travel. This ac-
tion should be such that there are no bending loads imparted to the turnbuckles,
(which are designed for straight tension load only). Any binding which causes
bending of the turnbuckles should be removed. Any cable attachment parts which
display appreciable corrosion must be replaced before further flight. NOTE: Pivot
points must be cleaned and lubricated with any lightweight lubricating oil. Following
lubrication, the cable attachments, including the turnbuckles, must be heavily coat-
ed with a good preservative such as:
Black Bear Paralketone Preventative
LPS 3, Heavy Duty Rust Inhibitor
Black Bear Co. (preferred)
LPS Laboratories, Inc.
Long Island City, NY
Tucker, GA
NOTE: Maule Service Bulletin No. 9 covers corrosion resistant parts replacement and is
particularly recommended for airplanes operating in a potentially corrosive environment.
Compliance to this Service Bulletin provides for larger stainless steel turnbuckles and
corrosion resistant steel fasteners and attachment details for the elevator cables.
13. Lubricate all chains and points of rotation on sprockets, pulleys and bellcranks,
14. Inspect and lubricate all control surface hinges and control horn connections.
