MAULE AEROSPACE TECHNOLOGY, INC.
MAINTENANCE MANUAL
FOR
M-7-235C
Rev. D
26/37
2.
Leak in system
2.
Inspect all attachments and fittings in brake sys-
tem.
3.
Air in system
3.
A springy, rubber action of the pedal indicates
air in the system. An excessive amount of air in
system will allow the pedal to continue traveling
under normal pressure. In either case, the sys-
tem should be filled and bled.
4.
Lack of fluid in reservoir
4.
Air will enter system if the reservoir runs dry. In-
spect at regular intervals and keep reservoir full
at all times.
5.
Vent plug stopped up
5.
If vent hole in reservoir plug becomes stopped,
there is a possibility that a partial vacuum will be
created in the system which will interrupt the
fluid flow in the system. Clear vent hole.
6.
Improper bleeding – air mixed with
fluid
6.
Bleed brakes.
7.
Master cylinder cup or “O” ring wear
7.
Replace brake cylinder cups and “O” rings.
8.
Wheel cylinder leakage
8.
Replace wheel cylinder seals.
DRAGGING BRAKES:
NOTE: These disc brakes have no spring return of the pads and thus will always drag slightly. Do
not be concerned unless this drag is noticeable while taxiing.
Probable Cause
Corrective Action
1.
Foreign matter in system
1.
If dirt is found in the system, the master cylinder
and brake assemblies must be dismantled and
parts cleaned with alcohol and reinstalled. Flush
system and install new brake fluid.
2.
Binding of brake piston
2.
Dust or dirt mixing with brake fluid at the brake
may become gummy and cause sticking of the
brake piston. Remove parts and clean and fill
system with new fluid.
become gummy and cause sticking of the brake
piston. Remove parts and clean and fill system
with new fluid.
3.
Use of improper fluid
3.
Improper fluid may destroy the seal and pack-
ings. Use only the recommended hydraulic fluid.
