Question about Minn Kota 55 AutoPilot Universal Sonar Combo GPS Receiver

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Minn Kota lower unit leaking. Have brush replacement kit. How do I insure a good seal upon reassembly?

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Man, you have a job ahead of you. First, if the unbreakable shaft is cracked or broken, you will have to replace it, for it will leak into the motor too. If your unit has the sonar sensor in the front and it has had water in it, the unit can corrode severely and need a lot of parts besides seals. The wiring to the sonar runs in a protective shield bonded to the magnet housing and one of the long screws holds it in there. Remember to take the wiring to the sonar out AFTER you remove the big motor feed wires, and replace it BEFORE you reinstall the red and black cables. Some grease seems to ensure the o'rings slide on metal parts during reassembly rather than tear. It's quite a job.

Posted on Nov 28, 2008

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