1986 90 Horse Evinrude Tilt Trim problem

[RickMcvinnie]

I recently picked up a used 1986 90 horse Evinrude and the tilt/trim is not working. I have power to the tilt/trim motor and the unit still does not operate. It does not make any sound. To me it sounds as if the electric motor is shot. Does my diagnosis sound correct and if it is does anyone know what motor I can puchase to replace this model?<br /><br />Thanks, Rick

 

[marinemech1]

Re: 1986 90 Horse Evinrude Tilt Trim problem

remove trim wires from plastic plug<br />touch one wire to positive and the other on negative<br />trim motor should work one way<br />reverse wires and trim motor should work the other way<br />if it works try replacing relays<br />let us know what you find

 

[RickMcvinnie]

Re: 1986 90 Horse Evinrude Tilt Trim problem

Thanks for the quick response marinemech1. I did do what you suggested and still had no movement or any noise at the motor. I also went from the battery direct to the different wires on the trim motor. I also tried a direct ground at another time. Isn't it true that the ground is run through the same wires, it just depends on the direction of the trim, up or down as to which wire is the ground. Please let me know if this is incorrect. The reason I ran direct from the battery was to by-pass all the trim swithces, One on the motor and the one on the control. the strange thing is it doesn't appear to cause a draw on the battery when I run to the wires on the trim unit. <br /><br />I can also lift the motor by releasing the pressure on the hydraulics and when I screw the relief valve back in it holds the motor in that position and when I loosen it, the motor travels smoothly back down. This makes me think the hydraulics are OK and it leads me back to the electric motor.<br /><br />Let me know if I am all wet in the way I'm diagnosing it. I look forward to further help.<br /><br />thanks, Rick

 

[marinemech1]

Re: 1986 90 Horse Evinrude Tilt Trim problem

yup your on the right track sounds like you need to repair/replace trim motor

 

[Chesapeake Explorer]

Re: 1986 90 Horse Evinrude Tilt Trim problem

The trim motors can have a tendency to leak water inside then corrode the brush springs. The trim motors are a very basic easy to repair electric motor, as stated the wires can be applied one way or the other running the motor in one direction or another. My 1988 Evinrude 90 had me repairing the trim motor about 5 times over the years. take it apart clean it and replace the brush springs. And seal it up . Becarefull about pounding as the base is plastic on most. There pretty havy duty made motors. I even had to glue in the maginets and had a magnet break in half which I reglued into the motor twice and still got it going. I never had any problem at all with nthe pump on the trim unit. I did have wires corrode going to the trim sensor

 

[RickMcvinnie]

Re: 1986 90 Horse Evinrude Tilt Trim problem

Thanks Guys I will take it apart and let you know what I find.