Cause: Poor Mechanical Connection

Weld system components are loose due to wear or improperly applied fasteners.


Correct replacement parts and procedures should be used when maintaining weld equipment in order to keep all joints secure. Thermal cycling, vibrations, etc. may loosen mechanical connections. Assembly and torque of the bolts, washers, nuts, etc. must meet manufacturers’ specifications.


Poor mechanical connections may be detected from one of the following:


Quality, Workplace Issues, Cost, Downtime, Maintenance, Throughput (cycle time; PPH), are all potentially affected by this condition.

Subordinate Causes

  • Improper maintenance
  • Improper bolt torque
  • Improper shunt length

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