TM 5-5420-280-23&P
TROUBLESHOOTING PROCEDURES
RAPIDLY EMPLACED BRIDGE (REB)
NSN 5420-01-481-3959 P/N 12480471
MECHANICAL SYSTEM TROUBLESHOOTING
NOTE
Refer to the general instructions in Introduction to
Troubleshooting, WP 0004 00, prior to performing mechanical
system troubleshooting.
Bridge Mechanical System Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. UPPER COUPLING WILL NOT LOCK
Step 1. Check upper coupling for obstruction or jamming caused by rocks or debris.
Clean obstruction or debris from upper coupling. Refer to TM 5-5420-280-10.
Step 2. Check for broken, bent, or missing spring.
If spring is broken, bent, or missing, replace spring. Refer to WP 0024 00.
Step 3. Check upper coupling lock lever plunger for full engagement.
a. Clean and grease plunger and lock mechanism. Refer to WP 0016 00.
b. Check if plunger pin is bent. Replace if bent or damaged Refer to WP 0024 00.
Step 4. Check lock mechanism for damage or proper adjustment.
a. If damaged, replace lock mechanism. Refer to WP 0024 00.
b. Adjust lock mechanism. Refer to WP 0024 00.
END OF TESTING
2. UPPER COUPLING WILL NOT UNLOCK
Step 1. Check lock mechanism for damage or proper adjustment.
a. If damaged, replace lock mechanism. Refer to WP 0024 00.
b. Adjust lock mechanism. Refer to WP 0024 00.
Step 2. Check trip lock levers for broken, missing springs, or proper adjustment.
a. If damaged or missing, replace spring. Refer to WP 0024 00.
b. Adjust trip lock lever. Refer to WP 0024 00.
c. Clean and grease lock lever and plunger. Refer to WP 0016 00.
END OF TESTING
3. LOWER COUPLING WILL NOT ENGAGE RECEPTACLE
Step 1. Check for possible misalignment of bridge halves.
Align bridge halves. Refer to TM 5-5420-280-10.
Step 2. Check lower coupling, receptacle, and lock levers for obstruction or jamming caused by rocks
or debris.
Clean obstruction or debris from lower coupling, receptacle, and lock levers. Refer to
TM 5-5420-280-10.
Step 3. Check for broken or missing coupling, receptacle, or lock levers.
Replace broken or missing coupling, receptacle, or lock levers. Refer to WP 0022 00.
END OF TESTING
