Replacing Or Rebuilding My Mercruiser Bravo 3 Trim Cylinders - Start To Finnish

Holy cow!

I would be ordering 2 after market ones. Change them both.

 

I pulled mine apart went to central hydraulic 7 year ago got new seals cost $8 for my outboard not saying they will have yours worth a try also a note my hydraulic steering I rebuilt the seals in it $4 seastar wanted $75 for kit. The pic. show the scraper seal not the sealing o ring it is on the inside of the cylinder some can be changed with out complete teardown some!!

 

Neither, I would donate the boat to me and you go get you a new drier boat!

 

I use PD

I use PB blaster heat gun and a line wrench try to slightly tighten it if it does not loosen up

 

Let the PB Blaster soak in a couple of days Gator. Line wrench get's a better hold than a regular wrench.
Flare nut wrenches are designed for the flare nut fitting on fluid or gas lines. ... Honestly, an open ended wrench can be used the same, However, they just don't offer as much surface grip on the fittings which increases the likelihood of damage.

 

Get both at AutoZone right down the road from you.

 

Great job on your investigation!

 

That's it...didn't know the exact name of them. Spray everything with the PB.

 

Looks pretty simple ...looking at the picture.

 

I take this comment back...I just watched the vid!
Wish he would have recorded while he was beating it off the shaft.

 

Good suggestion above. Also while soaking in PB blaster take a punch and hammer and tap on the nut repeatedly. Try tapping so as to jar loosen then tighten back and forth and in different directions. Don't whale on it and distort the nut. If the heat gun doesn't work try a butane tourch, but be very careful. Use flare nut wrench, try tightening then loosening. It looks like 1/4" pipe Thread. Get a couple 1/4" pipe plugs to keep the fluid from leaking. If you are not in a hurry you can measure the seal bore and depth and shaft size with calipers and call motion industry and they will have stainless seals. They will mail them to you. They have o-rings also. 407-298-0380.
Btw, if you mess up the casting threads you can take a pipe tape and cover it in grease then tap the hole an 1/8th to 1/4 turn to fix the threads and not drop metal chips into the reservoir.