Trim pump?

mrflip2

Seaman Apprentice
Joined
Sep 18, 2007
Messages
48
Just wondering of anybody has had this problem. When I raise the outdrive sometimes it immediately leaks (goes) down other times it it stays up. When I lower outdrive it goes to about 2 " from bottom and then starts to go up again. I've removed and blocked each rams hydraulics and it does the same for both so I don't think it is the rams. I've also replaced the trim pump with a known good one yet it does the same
This is a mercruiser 888 1973 Johnny roger boat with a 233 engine Thanks Phil
 

mikeneal

Senior Chief Petty Officer
Joined
Jan 28, 2004
Messages
710
Re: Trim pump?

There are check valves in the trim pump to hold the pressure. The problem is in the pump not the rams.
 
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