MAULE AEROSPACE TECHNOLOGY, INC.
MAINTENANCE MANUAL
FOR
M-7-235C
Rev. D
11/37
MECH INSP
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
electrical connections and wires for security and chafing.
6. Remove wing root fairings and inspect control cables, fairleads, fuel lines and
connections, and electrical wires and connections for security, chafing, and
leaks.
CAUTION: If a wing has been removed and reinstalled, or a new wing installed, vis-
ually inspect the routing of aileron cables through the inspection hole cover lo-
cated on underside of wing, aft of rear spar and outboard of wing strut attach
brackets. Ascertain that cables are not over the strut attach bracket and that
they are properly routed through the fairleads and around the pulleys
7. Remove wing strut fairings, top and bottom, and inspect attaching fittings and bolts for security, cor-
rosion, and cracks. Carefully inspect both sides of lift struts for abrasion, corrosion, pinholes, and
punctures. Any paint loss or minor corrosion should be sanded down to bare metal with fine sandpa-
per and metal primer should be applied. 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.
NOTE: This aircraft was equipped with sealed struts when manufactured. (Sealed
struts are identified by two weld spots located at upper end. Removal of the up-
per cuff is needed to locate the weld spots).
If powder coating exterior of sealed strut assembly, remove plug from lower end before painting. Oil-
coat internal walls of strut as follows (to be done after painting only): Inject into strut approximately
one quart of Valoil or Lionoil Multi-purpose L-1, Linseed Oil, Paralketone, LPS-3, Randolph Tube Oil
No. 315, Tubeseal (Lineoil) or any other preservative oil conforming to Federal Spec. TT-S-176D, Mil-
C-82309E, Type II or Mil-C-6708, Type I. Reinstall plug and slosh oil until interior of strut is thor-
oughly coated. Remove plug and drain oil from strut. Reinstall plug. Optional: pressure test to 4 psi
+/-1 for leaks using soap solution.
8. Remove wheels and inspect wheels, tires, brake 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 se-
curity, corrosion, and cracks and inspect brake hose for security, chafing and
leaks.
10.
Remove inspection hole cover in fuselage bottom inboard main landing gear
(spring gear) attach points. Visually check bolt/nut attachment for security, both
from below and above. Check fuselage square tube truss for cracks or bending.
Carefully inspect both sides of the spring gear itself at the inboard attachment
and along its entire length for abrasion, cracking, corrosion, exfoliation,
