2001 mercruiser alpha one 3L engine won't go down

[Maguyak]

I can raise but not lower the engine. It is now completely up. I can hear the pump run when I try to trim down but no motion follows. I have greased the points near the trim sending units on each side. The hydraulic reservoir is full. Is there a way to bring it down manually? It is currently in a lift and I need to get it to the harbor ramp.

 

[Bt Doctur]

how long has it been sitting with the drive up all the way

 

[brian4321]

Sounds like a bad trim pump

 

[Fun Times]

Try carefully sitting/standing (& some bouncing) on the stern drive while someone runs the trim down switch. Also add a little bit of grease where the inner chrome ram slides into the outer cylinder to help grease up the end cap and make sure that area is clean.

http://www.mercruiserparts.com/bam/subassembly/30862/2686/230

 

[Maguyak]

I just put it completely up this week. I will try the extra weight and lube. Will removing the pump lines allow it to come down?

 

[Fishermark]

When you put it completely up it puts a bind on the valve inside the pump. It can stick. Bouncing on it while someone runs the trim pump down usually frees it up. In the future, once you reach the top tap the down button briefly. This will help keep it from happening again.

 

[Maguyak]

Thanks for the tip. The bouncing didn't solve it unfortunately.

 

[Bt Doctur]

sometimes when they sit a long time extended with no pressure release they bind. Only way is to reverse the hyd lines at the pump and use the highewr up pressure to get the rams to retract. once retracted, reverse the hyd lines again.