Outdrive will not lower

Jakester79

Cadet
Joined
Aug 18, 2005
Messages
14
I have a 94 2452 with a mercruiser 5.0 and Alpha one outdrive, the only thing as for information on the tilt trim pump that I can find on the pump is SEA J1171. The problem is this, it is currently in the up position and will not lower. When I press the switch to lower the outdrive I can hear the pump but there is no motion. The hydraulic level is fine, there is power but no joy. Could there be a issue with the rams or possible a servo valve. any help would be great.
 

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: Outdrive will not lower

A common problem with any trim pump is when someone trims it all the way up until the pump motor boggs down. This is just building pressure and holding. What should be done, is trim it up till you hear the motor start to bog, then trim it down for a second to unloae the pump and valves of the excess pressurel. Keeps them from jamming.

To fix your problem, find a LARGE friend to stand on the outdrive and actually bounce on it while someone is holding the down button. That usually frees up the hydraulic lock.
 
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