INSTALLATION - TM-55-1925-292-14-P0279

TM 55-1925-292-14&P

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4. Remove the bell actuator assembly cover (figure 4, item 4), and turn it over to reveal the internal electrical

components (figure 4, item 6).

WARNING

Replace or repair components only after the affected circuit has been secured,

locked out and tagged out (FM 55-502). Performing replacement with the circuit

energized may result in injury.

5. Using a multimeter, check for voltage at the terminals (figure 4, item 7) to ensure that electrical circuits are

deenergized. If voltage is present, ensure that the proper circuit breakers are set to OFF, locked out, and

tagged out (FM 55-502). If no voltage is present, proceed with the procedure.

6. Label and remove the wiring from the terminals (figure 4, item 7), and remove the cover (figure 4, item 4).

7. Loosen and remove the four bolts (figure 4, item 8) and lockwashers (figure 4, item 9) that secure the

actuator assembly, and remove it from the mounting bracket. Discard the lockwashers.

INSTALLATION

1. Align the actuator assembly to the mounting bracket, and secure it in place with the four bolts (figure 4, item 8)

and four new lockwashers (figure 4, item 9).

2. Connect the wiring to the terminals (figure 4, item 7) using the labels from step 6 of Removal as a guide.

Remove the labels.

3. Install the bell actuator assembly cover (figure 4, item 4) and secure it in place with the six screws (figure 4,

item 5).

5. Install the gong (figure 4, item 3) on the bell actuator assembly cover (figure 4, item 4), and secure it with the

bolt (figure 4, item 1) and washer (figure 4, item 2).

6. Perform the Follow-On Service procedure at the end of this work package.

PRESSURE OPERATED SWITCH REPLACEMENT

REMOVAL

1. Remove the eight screws (figure 5, item 1) from the cover (figure 5, item 2) of the pressure operated switch

(figure 5, item 3).

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