Perform incoming testing including mechanical and electrical operations, insulation resistance, contact resistance, primary and/or secondary injection.

Verify wiring to be of standard configuration.

Disassembly of the circuit breaker to sub-assembly component level.

Dismantle the operating mechanism.

Dismantle the current path assemblies

Clean and inspect all parts for deterioration, removal of old lubrication and/or other deficiencies, defects or damage.

Clean and inspect arc chutes (repairs can sometimes be made to non-asbestos arc chutes).  Damaged asbestos chutes require replacement and an environmental assessment for disposal is required.

Document all discrepancies on the attached inspection report.

Document all parts needed on the attached inventory list.

Replace needle bearings, thrust washers, mechanical bushings and other small hardware as required (with customer approval).

Paint all previously painted surfaces.

Customer approval is required prior to replacement of rejected parts.  Forward inventory list to director of quality.

Replace components as required as directed by director of quality.

Lubricate all moving components as required to factory specification.

Reassemble sub-assemblies utilizing peer inspections.

Dress the contacts and adjust for proper alignment, over-travel and pressure.

Verify proper mechanical operation and adjustments.

Verify proper electrical operation and adjustments.

Perform final testing including mechanical and electrical operations, insulation resistance, contact resistance, timing, primary and/or secondary injection.

Prepare maintenance and test report.