Balmar AT Series 200A Alternator Repair Kit

The Balmar Offshore Repair Kit for AT Series 200A 12V alternators includes replacement bearings, brushes and a rectifier.

This is a kit for carrying rather than for a workshop, and the contents reflect what actually fails on a high-output alternator. Bearings, brushes and the rectifier are the three wear items. Everything else in an alternator either lasts or is not repairable away from a bench.

Bearings support the rotating assembly and become noisy or develop play after extended service. Brushes transfer field current into the rotor and wear away by design, so they are a consumable rather than a failure.

Carrying the kit matters on a boat that cruises beyond easy parts supply, which is what offshore means here. An alternator failure a long way from anywhere ends charging entirely, and these three parts cover most of what would cause it. Explore more alternator parts and accessories.

• A kit to carry, not for a workshop
• Bearings, brushes and rectifier are the wear items
• Brushes are a consumable, not a failure
• Alternator failure offshore ends charging entirely