Cause / 404

1. Rusted up. 2. Rack and Pinion latch out of adjustment. 3. Trip plate on Rack and Pinion style hoist bent, missing or out of align with latch.

Repair / 404

1. Lubricate or replace latches. 2. Adjust latch by loosening adjusting bolts, then reposition lock pawl. 3. Replace or reposition trip plate.