TM 5-5420-203-14
Table 3-1. Troubleshooting - CONT
MALFUCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. BRIDGE WILL NOT LIFT FROM BRIDGE SEAT.
Step 1. Check hydraulic fluid level of launcher.
Fill fluid level as required.
Step 2. Check hydraulic lines, connections on launcher.
Replace defective lines.
Tighten loose connections.
Check hydraulic filter for obstruction.
Step 3. Check quick-disconnect ends for obstructions.
Clean as required
3. BRIDGE REACTS RAPIDLY TO CONTROLS, (JERKS, JUMPS).
Step 1. Check engine RPM.
Set RPM no higher than 1800.
Step 2. Check hydraulic system for air bubbles.
Bleed air from system using bleed valves located on
scissor cylinder, and cycle launcher controls.
4. BRIDGE REACTS SLOWLY TO CONTROLS.
Step 1. Check hydraulic fluid level.
Add fluid as required.
Step 2. Check hydraulic line/hose connections.
Repair, attach, tighten, or connect as necessary.
5. BRIDGE REACTS WELL TO CONTROLS, THEN FAILS TO MOVE.
Step 1. Check for loose or leaking hydraulic connections.
Reconnect hydraulic connections.
Tighten loose connections.
Replace defective lines or hoses.
Step 2. Check hydraulic fluid level.
Add hydraulic fluid as required.
Step 3. Check output of hydraulic pump on launcher.
Perform repairs as required.
3-4
