How to change the "seal dust" oring on trim?

[peterv6i]

Hello to all..
I have a question on how to change the 6H1-43812-00-00 YAMAHA SEAL,DUST $6.15 (seal dust) oring on my power tilt trim.. I have a Yamaha F80 2002 year..

I have a trim "on my desk" but I don't know on how to extract the old one seal dust and replace it with new..

Thank you for any info!

regards

[boats.net]

Have to remove ram from cylinder, the trim piston unscrews off ennd of ram but will need a good soft jawed vise to unscrew without damaging it.

[peterv6i]

Ok..
[IMG][/IMG]

If I understand you, I must remove the part from the trim shaft signed with number one? In my case I can remove the part 1 with hand (unscrew)...

What then? I must remove the "cap" with four holes? I can make a key with 4 screws to release the cap...

[boats.net]

Yes you will need the spanner wrench(call boats.net to order the tool) to fit into the four holes to unscrew cap, then can remove trim ram from cylinder.

[peterv6i]

Ok..
If remove the cap is there some danger for the oil to come out from the cylinder? Must I remove the oil before this operation?

[boats.net]

Open the manual release screw to relieve pressure(may not completely relieve all the pressure) and after remove cap can pour oil out around ram to remove ram.

[peterv6i]

Ok.. the screw is located at the botom left side right?
Thank you!

[boats.net]

Yes it is.

[captainbrut]

Have to remove ram from cylinder, the trim piston unscrews off ennd of ram but will need a good soft jawed vise to unscrew without damaging it.

Hi fello boaties. I have a 60feto 1988 6h2-L-454159 with 6h1-10 tilt- trim, when I removed the ram arm and piston, I found the piston had a small pin that seemed to lock the arm in the piston, so I removed it and a small ball bearing came out. is this normal, and does the ram arm unscrew from the piston here, ??? Thanks, My first visit on Boats.net. I hope Iam in the right place for this question. Capbrut

[rodbolt17]

the trim system on the f80-f100 is the MOST difficult system to repair that yamaha makes.
certain speacial tools are a MUST.
its a two part ram sytem with 6 check balls and to replace the wiper requires total dissasembly of the ram assy.
the dust seal isnt your problem, the cap inner oring and back up ring and possibly a scored shaft is your problem.
you really really will need at least 2 special tools and a service manual.
yb-06175-2b and yb-06572 are mandatory tools.