Mercury 200 hp 1989-90? power tilt

[JDJNR]

I have a problem with the power tilt, it slowly drops when left in the up postion and when driving, I have tried to replace the seals in the tilt system and including the tilt motor seals, I have also tried another second hand trim. The only thing I havnt done is try another trim motor (but as above did replace the seals), I have no oil leaks, nothing I can see where oil is escaping. has any body had this problem and any ideas.<br /><br />Thanks.<br />Darrell

 

[WillyBWright]

Re: Mercury 200 hp 1989-90? power tilt

Welcome to iboats.<br /><br />Could be the motor unit which includes the pump. Not the motor part but the pump part. Could be a loose manual relief valve, could be a sticky valve just about anywhere inside, or a leaking check ball in the memory piston. Anyhow, the leak is apparently internal. A complete tear-down and thorough cleaning would be my only advice. But it sounds like you already have that covered. Most likely thing left is the pump. ARCO offers a replacement I believe.

 

[JDJNR]

Re: Mercury 200 hp 1989-90? power tilt

Thanks for that, yes I have had it completly apart and replaced all seals in the pump and mottor. This was done by a shop, replaced the manual relief valve with a new one, not sure on the check ball (where is that). sorry whats ARCO<br /><br />Thanks<br /><br />Darrell