Power Trim -Mercruiser

[Shoes]

The power trim on my 120 IO stopped working even though the hydraulic pump runs. The stern unit will move, but only if I open the manual valve on the pump. Even then it seems to struggle to move the stern to the down position(very slowly). Oil level in the pump is good. I may be able to use it this way, but I guess the question is why would it stop working, and why in manual mode does it go down so slow? Any thoughts appreciated.

[SchuStrings32jg]

The wires on hydraulics may be spliced. The same thing happend on my boat last summer and i had to take the hole lower unit off to replace it. Lets just say i got good at putting the lower unit on and off (if anyone has ever taken a lower unit and had to put the drive shaft in you know what i mean). Its not easy.

[Damark Marine]

Shoes

I am wondering where is the manual valve located you are moving. It might be a problem with the reverse lock valve. What year is this btw..
I will look into it if you have some info to share.


Jeff

[Shoes]

Thanks for the response guys. Haven't been on line for a while. I did take the boat out the other day and was able to use it, though it did take a while to get the lower unit down. The boat is a 1983 Imperial. The manual valve is a tee-shaped handle on the side of the pump. Thanks again.