mercury 90hp 1984 leaking trim cylinders

[stuart0]

I've just purchased a 90hp mercury blue band 6 in line.Both trim cylinders are leaking fluid heavily. I guess it must be the seals as the rods do not appear to be pitted. Is it a straight forward job to change the seals as only removal of the cylinders is covered in the manual?

 

[achris]

Re: mercury 90hp 1984 leaking trim cylinders

Stuart,<br /><br />You need 1 of these for each cylinders.<br /><br />-64507A1 Repair kit.<br /><br />Once you have removed the end caps it's a very straight forward job.<br /><br />Chris.............

 

[Chris1956]

Re: mercury 90hp 1984 leaking trim cylinders

Stuart, I have replaced the oring seals aroung the rods, on my '77 Merc inline six several times. I have have replaced the piston seal only twice in 30 years. The rod orings are of a common type, and are available anywhere. They are also easy to replace, if you have a spanner to remove the rod-end of the cylinder. The trick is not to remove the piston from the cylinder, since a special tool is needed to put it back. The piston detaches from the rod via a 9/16 bolt. Then you pull the rod out of the end cap and replace the oring.

 

[stuart0]

Re: mercury 90hp 1984 leaking trim cylinders

 

[stuart0]

Re: mercury 90hp 1984 leaking trim cylinders

thanks for the advice guys.