TM 55-1930-209-14&P-12
4.1.1
Continued
will immediately lose much of its magnetic strength and factory instructions for remagnetizing will be required.
For this reason, no part numbers are shown for parts which should not be disassembled.
Should it be necessary to replace the diaphragm and coil unit, 9055 0010, proceed as follows:
1.
Remove the driver unit from the horn as described above.
2.
Remove 4 bolts 8050 0063, 4 lockwashers 8065 0502, 4 bolts 8050 0066, and 4 lockwashers 8065 0502.
3.
Lift off mounting plate 8088 0008.
4.
Lift off diaphragm support 8088 0009 with attached diaphragm and coil unit.
5.
Remove screw holding springs 8089 0001 to diaphragm and coil unit. Remove old diaphragm and coil unit and
position new one.
6.
Place slotted ends of springs between clip and insulating strip on new diaphragm and coil unit 9055 0010.
7.
Tighten screws and secure with glyptol lacquer or equivalent.
8.
Support the diaphragm support 8088 0009 above working surface and center the diaphragm in the recess
provided.
9.
Replace the 4 bolts 8050 0063 and 4 lockwashers 8065 0502.
10.
CAREFULLY position the assembly in the magnet unit.
11.
Install the 4 bolts 8050 0066 and 4 lockwashers 8065 0502 but do not tighten.
12.
Center the coil in the magnet unit. Tighten the bolts 8050 0066.
Form No. 6310 0238
