TM 9-6115-624-BD
c.
Materials/tools.
BA30 or BA31 battery
Hacksaw
Sandpaper
d.
Procedural Steps.
(1)
Gain access to motor.
(2)
Remove electrical brush plate.
(3)
Obtain a BA30 or BA31 battery.
(4)
Using a hacksaw or other available tool, split the battery open, taking care not to damage the carbon
core.
(5)
Clean and cut the carbon core to fit the brush plate receptacles.
(6)
Insert the core into the brush plate and position the old brush wires under the retaining springs to
ensure electrical continuity.
(7)
Seal the brushes.
(a)
Cut a strip of sandpaper slightly wider than the commutator surface.
(b)
Tape the sandpaper strip over the commutator.
(c)
Install the brush plate.
(d)
Rotate the armature in the normal direction of rotation until the carbon core face conforms to the
armature surface curvature.
(e)
Remove sandpaper and blow out dust and sand.
(8) Reassemble motor and test operation.
(9) Reinstall motor.
(10)
Other options. Modify and use other electrical brush sets.
Record the BDAR action taken. When the mission is completed, as soon as practicable, repair the generator using
standard maintenance procedures.
7-15. Starter Solenoid Defective, Delco-Remy Only. With uneven wear of the solenoid plunger shaft, a lip will form
on one side of the shaft and the engine starter will not engage. Temporary repair can be made by removing the solenoid
and rotating solenoid plunger shaft 180 degrees.
a.
Limitations.
Starter solenoid life is shorter than new part.
7-17
