Tower crane variable amplitude limit not working properly

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News Source:　　 2015-08-24 10:30:03

　　analysis of causes

　　　　1、Loosening of the luffing limit switch

　　　　2、Bad contact between drum gear and amplitude limiter pinion or pinion damage

　　 solution

　　　　1、Inspection and repair

　　　　2、Repair or replace