LF225XCA Trim Piston Binding

[LIPowersports]

2011 LF225XCA left trim piston binds immediately engaging in trim after tilt. The trim piston and seals were changed due to a trim fluid leak. Last season after install, the trim moved smoothly then after a few weeks it started sticking to the point you’d have to toss your weight on the back of the outboard while trimming to free it. Something aint right. All Yamaha parts were used. I noticed the trim piston/seal design changed. Original design used outter circlips above the trim seal (pictures below) to no circlips. Fluid is clean, has plenty and I added grease on the piston ends to restrict any friction. What am I missing? Now the outboard trims better after spraying some CRC on the trim piston while exercising, but it still makes a binding sound. The right trim piston doesn’t bind however the left one does. Both were changed together.

 

[LIPowersports]

Took the cylinders back apart and discovered the circlip and o-ring orientation on the trim piston was wrong. Slapped it back together, good as new!

 

[99yam40]

good to hear you figured it out, and thanks for coming back to say what the problem was.
that was not something anyone would normally see.

you had me confused about what you were calling trim and tilt when you said " trim piston binds immediately engaging in trim after tilt."

trim is the small slow movement from the very lower part of movement and tilt is the faster longer movement after trim ends that tilts motor all the way up.

 

[LIPowersports]

good to hear you figured it out, and thanks for coming back to say what the problem was.
that was not something anyone would normally see.

you had me confused about what you were calling trim and tilt when you said " trim piston binds immediately engaging in trim after tilt."

trim is the small slow movement from the very lower part of movement and tilt is the faster longer movement after trim ends that tilts motor all the way up.

Yes so when movement transitioned from Tilt to Trim, that’s when the binding began. I probably could have worded it better.

 

[99yam40]

Yes so when movement transitioned from Tilt to Trim, that’s when the binding began. I probably could have worded it better.

OK I get it now, you were talking about the down movement when tilt trasitioned to trim.
I was thinking in the up movement.
that was my fault