rebuilding Trim Cylinders?

Discussion in 'General Maintenance/Repair Questions' started by ghuskin, Jul 14, 2008.

  1. ghuskin

    ghuskin New Member

    Jul 10, 2007
    Lake St. Clair, DYC
    SRV225 Cuddy Cabin, 1983
    228 Mercruiser w/ pre-Alpha1 "R" Drive
    I am assuming this is a DIY project? Will I need any special tools? Has onyone done this themselves? Can you share any advice?

    Thank you in advance.

    Gregg
     
  2. StressAweigh

    StressAweigh New Member

    487
    Jan 11, 2008
    Kent Narrows Maryland
    1997 290 DA
    Twin 4.3 Mercruiser
    Gregg hvae you looked into just replacing it with a new one I replaced one about two years ago and I think it was only about 90.00 bucks
     
  3. ghuskin

    ghuskin New Member

    Jul 10, 2007
    Lake St. Clair, DYC
    SRV225 Cuddy Cabin, 1983
    228 Mercruiser w/ pre-Alpha1 "R" Drive
    stressaweigh,

    new cylinders are alot more, according to what I've found. $300 per side. I just bought the rebuild kits from WM @ $22/side.

    Looks like i have my weekend planned!

    I'll let everyone know how it goes if they're interested.

    Gregg
     
  4. StressAweigh

    StressAweigh New Member

    487
    Jan 11, 2008
    Kent Narrows Maryland
    1997 290 DA
    Twin 4.3 Mercruiser
    Gregg I may have been mistaken The trim cylinder I replaced was for my trim tab sorry about that
     
  5. ghuskin

    ghuskin New Member

    Jul 10, 2007
    Lake St. Clair, DYC
    SRV225 Cuddy Cabin, 1983
    228 Mercruiser w/ pre-Alpha1 "R" Drive
    not a problem!

    I won't deduct any points for that one. :)
     
  6. StressAweigh

    StressAweigh New Member

    487
    Jan 11, 2008
    Kent Narrows Maryland
    1997 290 DA
    Twin 4.3 Mercruiser
  7. ghuskin

    ghuskin New Member

    Jul 10, 2007
    Lake St. Clair, DYC
    SRV225 Cuddy Cabin, 1983
    228 Mercruiser w/ pre-Alpha1 "R" Drive
    thank you! per website, complete cylinders start at $199 ea.

    I'l go the rebuild method. more money left over for gas!
     
  8. H2ONUT

    H2ONUT Active Member

    Nov 26, 2006
    Shelton, CT
    2000 215EC
    5.0 EFI Mercruiser Alpha
    Let me know how this goes for you. I have a leaky one that needs to be looked at. I have rebuilt hydraulic cylinders before on forklifts and they were a PITA, and they worked after the repair, so I guess that's a plus. :grin:
     
  9. ghuskin

    ghuskin New Member

    Jul 10, 2007
    Lake St. Clair, DYC
    SRV225 Cuddy Cabin, 1983
    228 Mercruiser w/ pre-Alpha1 "R" Drive
    will do...

    I'm pulling the boat out friday, early afternoon. Hope to be in the water on Saturday!
     
  10. douglee25

    douglee25 Active Member

    Jan 13, 2008
    NJ
    Cabrio
    Volvo Drivetrain
  11. Sorrento 25

    Sorrento 25 New Member

    501
    Oct 11, 2006
    Manatee River
    Sorrento 25
    454 Alpha
    Please keep us posted on the cylinder rebuilds! I've been wanting to do this myself.
     
  12. fc3

    fc3 New Member TECHNICAL Contributor

    Nov 12, 2006
    Northern NJ
    1999 Sea Ray 330DA
    Twin 7.4 MPI (310 propshaft HP) V-drives
    Twin Mercury Marine marinized 7.4L L-29 V8s
    Cast iron block w 4-bolt mains
    4.25x4.00 bore & stroke
    You can rebuild them. It's easy. I've done it and you need no special tools. It's so easy a Four Winns owner could do it. Heck even a Larson guy could rebuild them.

    There is a special tool to remove the end caps. However mine were a bit corroded, so I bought new caps. Used water pump pilers to remove the old since they were heading for the bin. Fabricated an installing tool from flat stock. Drilled holes to match the holes in the end caps and put screws into the holes in the flat stock that matched the holes in the end caps.

    Only special thing to remember, as with all hydraulic systems, is too keep everything very clean! Mercruiser manual outlines the bleeding process once you reinstall the cylinders. My rebuilding kits, from Mercruiser, don't get the cheap substitutes, also had instructions. I posted the instructions elsewhere on this site.

    Best regards,
    Frank
     
  13. ghuskin

    ghuskin New Member

    Jul 10, 2007
    Lake St. Clair, DYC
    SRV225 Cuddy Cabin, 1983
    228 Mercruiser w/ pre-Alpha1 "R" Drive
    "You can rebuild them. It's easy. I've done it and you need no special tools. It's so easy a Four Winns owner could do it. Heck even a Larson guy could rebuild them."

    hehe! That's reassuring, 'cus I'm a caveman.

    The instructions indicate to use a pipe wrench. It looks like all you need is the proper size "spanner wrench" to fit the holes you describe.

    I'll be certain to keep things sanitary. I looked for other threads here on trim cylinders, but was unsuccessful. The instructions on bleeding the system would be helpful.

    Do the tabs and outdrive use the same pump resevoir?

    Do I need full photo disclosure of the process?

    Gregg
     
  14. fc3

    fc3 New Member TECHNICAL Contributor

    Nov 12, 2006
    Northern NJ
    1999 Sea Ray 330DA
    Twin 7.4 MPI (310 propshaft HP) V-drives
    Twin Mercury Marine marinized 7.4L L-29 V8s
    Cast iron block w 4-bolt mains
    4.25x4.00 bore & stroke
    You're right. I didn't post the full instructions, just a parts diagram here.

    I'll check the manual and see if I can get the scanner to play nice.

    Best regards,
    Frank
     
  15. sea salt

    sea salt New Member

    102
    Jul 9, 2008
    Long Island
    300DA
    Twin 7.4 Mercs
    No.
     
  16. 270SLX

    270SLX New Member

    289
    Dec 12, 2006
    Bettendorf Iowa USA
    2005 270 SLX; Navman 5500; no trailer; Dry stacked.
    6.2 320 HP Bravo III drive.
    I have to now rebuild the cylinders on my trim tabs (or, my dealer might do it). When my boat came back from the SR factory after they replaced my hull, they somehow had put a 10 amp fuse where a 20 is supposed to go for the tabs. Unknown to me, the fuse blew while I was on the water and when the dry stack forklift lifted my boat, it bent the tabs and blew out the seals in the cylinders. I know its the seals because I had hydraulic fluid on the outside of the boat, at the cylinders. Glad to hear its not a big deal. This hull doesn't like not having tabs.

    Dennis
     
  17. ghuskin

    ghuskin New Member

    Jul 10, 2007
    Lake St. Clair, DYC
    SRV225 Cuddy Cabin, 1983
    228 Mercruiser w/ pre-Alpha1 "R" Drive
    240slx,

    The rebuild i'm doing is for the trim cylinders on the outdrive, not the trim tabs. Although, the process may be similar?

    Frank, those procedures would be greatly appreciated! Thank you!

    Seasalt, that's what i thought. Just wanted to verify. I think the trim tabs use ATF, while the trim cyclinders use 10w-30.

    Thank you all!

    Gregg
     
  18. fc3

    fc3 New Member TECHNICAL Contributor

    Nov 12, 2006
    Northern NJ
    1999 Sea Ray 330DA
    Twin 7.4 MPI (310 propshaft HP) V-drives
    Twin Mercury Marine marinized 7.4L L-29 V8s
    Cast iron block w 4-bolt mains
    4.25x4.00 bore & stroke
    ghuskin likes this.
  19. ghuskin

    ghuskin New Member

    Jul 10, 2007
    Lake St. Clair, DYC
    SRV225 Cuddy Cabin, 1983
    228 Mercruiser w/ pre-Alpha1 "R" Drive
    Frank C,

    Thank you for posting the procedures.

    I'll let everyone know how it goes this weekend...

    Gregg
     
  20. Morpheus

    Morpheus New Member

    May 7, 2007
    Odessa, FL
    2006 SeaRay Sundeck 240
    5.0MPI Mercruiser w/ Bravo III
    ShipShape TV just did an episode on this but of course the Guy from Bennet said it's better to replace them instead of rebuild them.
     

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