Autoquip BASCULE BRIDGE - DOUBLE LEAF - Manual (Page 13)

DANGER !
BLOCKING INSTRUCTIONS
NEVER go under the bridge or perform maintenance until the load is
removed and the bridge is securely blocked.
1. Lower the empty bridge platform into the horizontal position.
2. Place temporary supports under all corners of the bridge frame.
3. Drive shims and/or blocks between the bridge frame and the supports to relieve
pressure from the lifting cylinders.
4. To remove temporary supports, hydraulically raise the bridge to the vertical
position.
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