Trim problem

[Lager]

Just bought an old 89 3.0 liter I/O boat and noticed in my yard the trim didnt work all that well. As I activated the button the motor would rev up then slowly die off when either going up or down.Thats the first clue.
Tossed into the lake today, noticed the trim really didnt work all that well. Thinking it was nature of the beast since Im used to high powered bass boats with out boards.
But when I loaded the boat back onto the trailer, the trim button up or down did not work. All I got was a click from each solenoid.Since I couldn't trailer the boat back to the house with the motor down with out damage. I started checking all the elect contacts. They seemed to be fine. I tried bypassing the solenoid, that didnt. Since I didnt have a test light or a DVM, I resorted to an age old mechanics tool and thats a hammer.
I started banging and with the wifey hitting the up button the pump started working better then ever.
My first thought was a bad solenoid, but the lower solenoid didnt work either.
Now, Im thinking bad brushes in the motor, me banging freed them up and now are working, for now.
Your thoughts?
Suggestions on where to find brushes for this motor and how to replace them?

 

[achris]

Re: Trim problem

Just bought an old 89 3.0 liter I/O boat and noticed in my yard the trim didnt work all that well. As I activated the button the motor would rev up then slowly die off when either going up or down.Thats the first clue.
Tossed into the lake today, noticed the trim really didnt work all that well. Thinking it was nature of the beast since Im used to high powered bass boats with out boards.
But when I loaded the boat back onto the trailer, the trim button up or down did not work. All I got was a click from each solenoid.Since I couldn't trailer the boat back to the house with the motor down with out damage. I started checking all the elect contacts. They seemed to be fine. I tried bypassing the solenoid, that didnt. Since I didnt have a test light or a DVM, I resorted to an age old mechanics tool and thats a hammer.
I started banging and with the wifey hitting the up button the pump started working better then ever.
My first thought was a bad solenoid, but the lower solenoid didnt work either.
Now, Im thinking bad brushes in the motor, me banging freed them up and now are working, for now.
Your thoughts?
Suggestions on where to find brushes for this motor and how to replace them?

That's my thought too... If you give us a more detailed description of the trim system we can point you in the right direction for brushes. Merc used a few different motor and pump assembly around that time. So, round motor, square motor? Round reservoir, square reservoir? Plastic reservoir or metal reservoir?

Chris.....

 

[Lager]

Re: Trim problem

Hi Chris.I took the pump motor off tonight and decided to just buy a new one. I just hate troubles on the water. Will probably re brush my old one and keep it as a spare. Square motor( sort of) square Res and plastic. Typical 89 era.
Thanks for your suggestion.

 

[achris]

Re: Trim problem

That sounds like one of these ->

That is still the current trim pump/motor. They are made by Parker Oildyne, it's the 108 series.. If you need spares, get them direct.