TM 9-2330-238-14
4-23. CIRCUIT BREAKER REPLACEMENT.
This Task Covers:
a.
Removal
c.
Installation
b.
Cleaning and Inspection
initial Setup:
Equipment Conditions:
Materials/Parts:
• Externa] power supply cable disconnected.
l Dishwashing compound (Item 6, Appendix E)
l Rags (Item 11, Appendix E)
Tools/Test Equipment:
l Marker tags (Item 15, Appendix E)
l General mechanic’s tool kit
NOTE
All circuit breakers are replaced In the same manner. The number of screws holding
cover plate on junction box will vary. M313 (Early Model) Is shown.
a.
REMOVAL
1.
Remove four screws (2) and cover plate (3) from junction box (1).
2.
Loosen terminal screw (6) and remove wire (5). Tag wire.
3.
Remove terminal screw (6) and circuit breaker (4) from contact bar (7) by pulling outward and away from center
strip.
b. CLEANING AND INSPECTION
1.
Clean all metal parts with soap and water and dry thoroughly. Wipe all other parts with clean dry cloth.
2.
Check junction box for cracks or other damage.
3.
Inspect circuit breakers for cracks or other damage.
4.
Inspect all mounting hardware for defective threads.
5.
Replace all defective parts.
I
c.
INSTALLATION
1.
Install circuit breaker (4) in junction box (1) by pushing inward at center strip.
2.
Loosely install terminal screw (6) in circuit breaker (4).
3.
Connect wire (5) to circuit breaker (4) and tighten terminal screw (6). Remove tag.
4.
Position cover plate (3) in place on junction box (1) and install four screws (2).
4-32
