Lyman MK 4 Power Feed Repair Service

Professional diagnostic and board-level repair service for this Lyman MK 4 Power Feed.

The Lyman MK 4 Power Feed is a motor‑driven table feed system used on Bridgeport milling machines, consisting of a gear drive and speed selector. Common failure points for this class include worn or broken gears, loss of power to the drive motor, and damaged speed‑control contacts. First‑check steps: verify that the unit receives correct line voltage at its inlet terminals; inspect the drive motor windings for continuity and any signs of overheating; examine the gear train for wear or misalignment and test the speed selector switch for proper contact operation. Post Comment

Need your Lyman MK 4 Power Feed repaired?

Ship your unit to our North Carolina repair shop for component-level diagnostics and a repair estimate. We service industrial control electronics and power systems nationwide.

• ⚙️ Board-level diagnostics – Troubleshooting beyond simple module replacement
• 🔁 Clear approval process – No repair begins without your approval
• 🧰 Expert Technicians – Decades of board-level experience
• ✅ 1-Year Warranty – Included with completed repairs

Start a Repair Request   Call 1-336-969-0110

Nationwide service • Industrial-grade testing • 1-year warranty on completed repairs

Owner-Operated • Practical Pricing • 1-Year Warranty • Nationwide Service

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