Power Trim Problems

ricochetbuell

Recruit
Joined
May 22, 2011
Messages
3
I have a 1978 Glastron with a Merc 898 Chevy 305 a (I think a Prestoline pump). Last year I had problems with the four o rings on the bottom of the pump blowing for no apparent reason. Before I spend the money on a new pump I thought I would take the original apart to see if there was any obvious problems.

The only thing I could find was it was full of sludge. I took it all apart and cleaned it up, reassembled and the drive went up and down about three times before the clear 1/4 inch line from the pump to the reverse lock valve blew.

I decided to replace all the hoses in the system, assuming they were old and that was the problem. Now after all new hoses the drive will only travel a little bit up and down but never all the way to either position. if you keep running it back and forth the clear line blows.

I did not adjust any of the settings in the pump and put it all back like it was. The only thing I can come up with is I put the hoses on wrong?

Any suggestions would be helpful. Thanks in advance.
 

ricochetbuell

Recruit
Joined
May 22, 2011
Messages
3
Re: Power Trim Problems

Update: Fixed the no up/down problem and hose blowing problems but now I only have up and no down. The motor runs but sounds like it is not moving any fluid. I took the pump back apart to double check everything and still no luck. The big o ring on the reverse lock is leaking now could that have anything to do with it? Any help would be appreciated. Thanks.
 
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