After "re-wiring" minn kota all terrain 55 prop is spinning "backwards"

itallushrt

Recruit
Joined
Apr 3, 2010
Messages
1
After "re-wiring" minn kota all terrain 55 prop is spinning "backwards"

Long story short, but I had an old Minn Kota 55 AT 12V sitting in the floor of my shed for 2 years. Decided to see what was wrong with it and drop it off for some service. Well that is another story as the I got into a dispute with the shop performing the work (no estimate given when promised it would be prior to work starting, called and told to come pay almost 90$ for repaired motor :rolleyes:).

ANyway, when I asked them what was wrong they said some "wiring was broken" inside. OK, whatever. I take off new trolling motor and place this guy on the boat and take it on a shakedown run. Point the motor straight (looking at the actual head in the water not the indicator up top), hit the foot control and go backwards. HAHA, sure enough I spin the head around and hit the button and go forward.

I'm not taking the motor back to this shop and just want to get this working correct so I can try to sell it on craigslist or something.

Is it possible the wiring is backwards to cause this or do they have a gear flipped?

Thanks.
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: After "re-wiring" minn kota all terrain 55 prop is spinning "backwards"

Re: After "re-wiring" minn kota all terrain 55 prop is spinning "backwards"

That is probably a permanent magnet motor. If the field winding is connected in reverse polarity it will run backward.

All you need to do is reverse the wires going to the motor.
 

PAF3511

Cadet
Joined
Nov 27, 2009
Messages
11
Re: After "re-wiring" minn kota all terrain 55 prop is spinning "backwards"

Re: After "re-wiring" minn kota all terrain 55 prop is spinning "backwards"

I had the same problem after taking the lower unit apart. It ended up being the magnet shell was upside down; must have moved it as I was twisting the lower unit off. I just twisted the magnet shell 180 degrees and the motor was turning the correct way.
Below are a few other possibile problems that could be causing your problem.

Motor running backwards:
Step 1. Polarity reversed to armature. Possible causes include:
A. Wired backwards
B. Brush plate in upside down
C. Magnet shell upside down (on 3 ?? or 3 5/8? motor assemblies the marking notch should be on the
bottom towards the skeg)
 
Top