MAULE AIRCRAFT CORPORATION
MAINTENANCE MANUAL
FOR
M-4/C/S/T
7
Rev. B
4/13/16
B. AIRCRAFT
1. Remove right and left kick panels in cockpit, windshield side post covers and panels
below seat fronts.
Cont’d
CAUTION: If backside of kick panel shows evidence of rudder cable rub and tape has
not been placed, comply with Maule Service Bulletins No.14 and No. 17.
Examine protective rudder cable guide tubes, (located behind kick panels), if in-
stalled per Service Bulletins No.17, and attaching clamps, bolts and nuts for securi-
ty and general condition.
2. Examine all front cockpit electrical connections and wires, fuel lines and fittings,
control cables attachments and pulleys for security, leaks, chafing, etc.
3. Remove rear seat, rear floorboard and panel behind baggage compartment.
4. Inspect all control cables, pulleys, fairings and electrical connections and wires for
security and chafing.
5. Open zippers in headliner and inspect all control cables, pulleys, fairleads and elec-
trical connections and wires for security and chafing.
6. Remove wing root fairings and inspect control cables, fairleads, fuel lines and con-
nections, and electrical wires and connections for security, chafing and leaks.
7. Remove wing strut fairings, top and bottom, and inspect attaching fittings and bolts
for security, corrosion and cracks. Carefully inspect both sides of lift struts for abra-
sion, corrosion, pin holes and punctures. Any paint loss or minor corrosion should
be sanded down to bare metal with fine sandpaper and metal primer should be ap-
plied. After the primer is dried, a finish coat of the desired color may be added.
Powder coating is recommended if complete strut is being refinished.
WARNING: Any unrepairable dents or punctures in strut are cause for replacement of
the strut.
CAUTION: If aircraft has unsealed struts, comply with Maule Service Bulletin No. 11
(AD# 98-15-18) as required, (new sealed struts are identified by two weld spots located
at upper end. Removal of the upper cuff is needed to locate the weld spots). Note: Ear-
ly M-4 struts have the 7/16” dia. lower fork thread. 1/2” dia. is required for later models.
CAUTION: Item (a)(4) of AD# 98-15-18 is very misleading as Maule never drills holes
in struts to attach cuffs, door clips or any hardware and it is illegal to do so since there
are no approved holes in the wing struts under the TC data. If aircraft has a modifica-
tion added requiring a drilled hole in strut under a #337, refer to AD for inspection re-
