Trim Tilt Issues on Mercruiser 3.0 Alpha One I/O (140 hp) on 1984 Sea Ray Seville

[PontoonLife]

Hello,

Just trying to get the boat out for the first time this year and having issues with the trim/tilt. Everything was working fine last year. Left prop in trim up position, I know I probably should have left it down.

When hitting the up and down on the trim tilt the solenoids click but the trim motor makes absolutely no noise.

I took the trim tilt motor apart and without the hydraulic/oil chamber attached the motor spins just fine when the trim up/down buttons are pressed!

I tried taking a screwdriver and twisting the hydraulic/oil chamber device and I thought it was spinning just fine. Oil level in the chamber is normal.

Thinking that the motor was now working I put the motor back together and still I am getting the same results, the solenoids click but the motor does nothing. Frustrating!

Any suggestions on what I can try next?

See pictures for my equipment...

 

[Slamnslash]

Did you check to see if there is power? The solenoid is just a switch. There is a fuse for the primary line that runs the pump motor.

 

[Bt Doctur]

I took the trim tilt motor apart and without the hydraulic/oil chamber attached the motor spins just fine when the trim up/down buttons are pressed!

How did you manage to take the motor apart attached to the housing

Thinking that the motor was now working I put the motor back together and still I am getting the same results, the solenoids click but the motor does nothing. Frustrating!

pressing the trim buttons operate the solenoids that operate the motor?????
Now were confused.

 

[PontoonLife]

Thanks for the replies..

I tested the voltage across the solenoids with a multimeter when the trim up/down switch was pressed and there seemed to be power across the solenoids. (Multimeter spiked to 60-80 volts)

Is there another test to make sure the solenoids are working? Would the trim motor spin without the hydraulic reservoir attached if the solenoids were bad?

Bt Doctur -

I removed the trim motor pump from the hydraulic reservoir to expose the trim pump drive shaft piece. I didnt take a picture of this.

Yes, pressing the trim buttons operate the solenoids that activate the trim motor? Right?

 

[PontoonLife]

The electrical connections inside the motor were corroded. Opened the motor and spun the drive shaft with a drill and it works again.