TM 5-5420-209-12
3-4. Troubleshooting Procedures. Refer to symptom index for the troubleshooting Procedure of the observed
malfunction.
a. Table 3-1 lists the common malfunctions which you may encounter during operation of the ribbon bridge and its
components.
b. This manual cannot list all malfunctions that may occur, nor all test or inspections and corrective actions, notify
your supervisor.
SYMPTOM INDEX
Symptom
Page
Floodlights Inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Clearance and Marker Lights Inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Boom Inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Boom will not Elevate with Bay Installed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Winch Develops Insufficient Power to Retrieve Bay/or Lift Bay for Bank Launch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Winch Noisy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Cable Tensioner Noisy (RBT only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Locking Cylinder Inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Hydraulic Pump Inoperative or Noisy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Ramp does not Articulate when Pump Handle is Pumped . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Table 3-1. Direct Support Troubleshooting Procedures.
Malfunction
Test or Inspection
Corrective Action
1.
FLOODLIGHTS INOPERATIVE
Step 1.
Check to see if floodlight switch on hydraulic consoles in the ON position.
Position floodlight switch to ON.
Step 2.
Check to see if switch on floodlight is in the ON position.
Position floodlight switch to ON.
Step 3.
Inspect for loose or damaged leads and connectors. Secure loose connections.
Notify unit maintenance if floodlight is still inoperative.
2.
CLEARANCE AND MARKER LIGHTS INOPERATIVE
Step 1.
Check to see if vehicle light switch is in the proper position.
Position vehicle light switch to proper position.
3-2
