34scarab

I have the old style bravo-1 drives, 1988's, and the problem is when they sit for a period of time, overnigh say, the port drive won't stay trimmed up.
There are no visable leaks that I can see.
Can this be the trim pump going south?

sonic28

could be internal leak in the cylinders. purge the system to remove any air.

Cord

iTrader: (2)

There are some check valves in the trim pump too. The kit is available, but I've heard that it can be tricky to install.

jpclear

What Cord said: And the kit comes with good instructions, so if you are patient and willing to follow the directions, I'm sure you can solve this problem at home with basic tools. --- Jer

Downtown42

http://www.mercruiserparts.com/Show_...ttom+Mounted+R<br%20/>ese

I have same problem with my port drive. Here is BAM part list.

Downtown42

http://www.offshoreonly.com/forums/s...highlight=trim

Also, here is my thread with lots of good info.

34scarab

Thanks for the good info.
I'll tear, er, look into it this weekend!

US1 Fountain

iTrader: (1)

A friend of mine had same problem. His was worn out piston seals in the rams.

Downtown42

US1: is there anyway to determine if seals are worn? Mine are not leaking at all. I guess I could swap from starboard and see if problem is still there.

BajaRunner

theres also an o-ring at the pump. mine did the same. replaced o-ring, no more problems