115hp Mercury Trim

[rwunstel]

My trim was working fine and all of a sudden it was in the up postion and now it want move. The trim pump is running but nothing happens pushing up or down. The motor sounds normal and its full of fluid. Anyone have any sugguestions.
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[Maple Leaf]

I got the book for one,There should be a manual relase Valve on the side that you unscrew I tink to bring it down!!Let me find the book!!!

[Maple Leaf]

Troubleshooting Hydraulic System
IMPORTANT: Operate Power Trim system after each check to see if problem has been corrected. If problem has not been corrected proceed to next check.

1. Check that manual release valve knob is tightened to full right (clockwise) position.ffice:office" /><O:p></O:p>

2. Check trim pump fluid level and fill if necessary. Refer to "Filling and Bleeding the Power Trim System", preceding.<O:p></O:p>

3. Check for external leaks in Power Trim system. Replace defective part(s) if leak is found.<O:p></O:p>

4. Check for air in Power Trim system and bleed if necessary. Refer to "Filling and Bleeding the Power Trim System", preceding.<O:p></O:p>



I don't know if this helps!!!:leaving:

[rwunstel]

Bled it down and tried it. Damm thing started working again. Thanks for the help. Trouble is, I still don't know what the problem was. Now I can sit back and wait for it to happen again.

[afr]

i think thats what happen to mine one time just been way to long ago
mine was on my 150
way way back
as i recall thats all i did was let it down and it worked fine for ever

[150aintenuff]

you sucked air..... replace the O rings on the release valve mechanism and change the oil in the trim pump resovior.... these will avoid a repeat...... did that same thing long ago when I was about 13.... I was in OH so much trouble till the shop mechanic said its just an O ring...... we rebuildt the release valve and to this day nearly 3000 hrs of operation later its still working flawlessly

[flabum1017]

If you trimmed it all the way up in cold weather then tried to trim it down in hot weather, you experienced hydraulic lock. Next time, pop the release valve and see if it starts working again.