500/520 DB official thread

Discussion in 'Sport Yachts/Yachts' started by Havana Shamrock, Dec 17, 2018.

  1. spikedaddy99

    spikedaddy99 Well-Known Member

    Jun 11, 2008
    Prentice, Wi
    2005 500 DB
    QSM-11
    Either of you have pictures of the pitting you are referring? I assume this is a salt environment issue? M
     
  2. Jeremygavin

    Jeremygavin Well-Known Member GOLD Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    I don’t have a pic but yes, it is typical salt water corrosion on the power coated aluminum
     
  3. ocgrant

    ocgrant Official Bahamas Boating Ambassador

    Dec 31, 2006
    Miami / Ft Lauderdale
    H2O Therapy
    2006 Sundancer 48
    Novurania 430DL
    Yamaha EX-R
    PADI Divemaster
    Raymarine Electronics
    Cummins QSC 540's
    I had the same flaking of the powder coating. Took them to my local powder coating shop and they matched it right up and re coated them for $75 bucks each. If you paint over the powder coat it will continue to delaminate and you have a bigger mess. They have to be sand or walnut blasted and then I guess you could paint but I chose to powder coat again.
     
  4. Charlesoceanone

    Charlesoceanone Active Member

    392
    Dec 14, 2014
    Harbor Shores Marina, St Joseph, Michigan
    2009 52DB
    2021 Walker Bay LTE 11
    QSM11
    Sorry no pictures here either. I also had some scratches and overall corroded hinges so I chose the replacement route. They turned out perfect. Not cheap but perfect. I also had them make me a door for under the seat also. Had no access and water and dirt always pool in this corner so I wanted to be able to clean it better.
     
    Jeremygavin likes this.
  5. Charlesoceanone

    Charlesoceanone Active Member

    392
    Dec 14, 2014
    Harbor Shores Marina, St Joseph, Michigan
    2009 52DB
    2021 Walker Bay LTE 11
    QSM11
    Any thoughts if the factory chain is 3/8 for a swivel?
     
  6. rlynch03

    rlynch03 Active Member GOLD Sponsor

    758
    May 16, 2019
    Annapolis, MD
    07 52 Sedan Bridge, 2019 Brig Falcon 360HT-30HP Honda, 2003 16' Dauntless
    Cummins QSM 11 660 HP w/ ZF 325-1A
    Winterize A/C system help

    Each year I try to winterize my A/C pumps, lines and A/C units by using the Seaflush.com device. Their video makes it look so easy but even my largest shop vac will not push the fluid through the system. And the pumps won’t prime by pouring the pink stuff into the strainers.

    I end up using my small water pump and a bucket and disconnect each line to push the fluid through.
    Easy enough but wondering if I am missing a better way.

    What process/device do you guys use to winterize your a/c systems?

    Thanks in advance
     
    Last edited: Jan 23, 2022
  7. Irie308

    Irie308 Well-Known Member GOLD Sponsor

    May 28, 2013
    CT
    2004 420 DB, GHS Hydraulic Lift
    Garmin 8600/Garmin 1222 plus
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    rlynch03 likes this.
  8. carterchapman

    carterchapman Well-Known Member TECHNICAL Contributor SILVER Sponsor

    Mar 25, 2008
    Lake Chickamauga/Marietta, GA/Ft. Myers, FL
    2006 Sea Ray 58 DB
    MAN CRM V8-900s, Twin Disc Drives; Onan 21.5 Generator
    Look at the Mantus S2. Great strong swivel.
     
  9. Charlesoceanone

    Charlesoceanone Active Member

    392
    Dec 14, 2014
    Harbor Shores Marina, St Joseph, Michigan
    2009 52DB
    2021 Walker Bay LTE 11
    QSM11
    Thanks. Already ordered!
     
  10. Jeremygavin

    Jeremygavin Well-Known Member GOLD Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    I use this cap as well. I still had issues with getting the pump to prime. I used to have to take the hose clamps off and crack the line to get the pump to prime. That made a mess so I put a tee in the line with a shut off so that I can easily crack the line open to let the pressure out. Now it is very easy to get it to prime.
     
  11. rlynch03

    rlynch03 Active Member GOLD Sponsor

    758
    May 16, 2019
    Annapolis, MD
    07 52 Sedan Bridge, 2019 Brig Falcon 360HT-30HP Honda, 2003 16' Dauntless
    Cummins QSM 11 660 HP w/ ZF 325-1A
    Thanks Jeremy- which line did you put a T in? Each of the hoses coming out of the Pumps going to the A/C units?
     
  12. Jeremygavin

    Jeremygavin Well-Known Member GOLD Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    No, just 1 of them. I don’t know which one I put the tee on but I don’t think it matters. They all T off the pump manifold so just getting the pressure from behind the pump allows it to get fluid to it much easier. Once the pump is primed, it stays primed as I switch each individual unit on and off.
     
    Last edited: Jan 25, 2022
    rlynch03 likes this.
  13. quality time

    quality time Well-Known Member

    Oct 30, 2007
    Upper Chesapeake Bay
    2003 480DB
    QSM11's
    I put shut off valves in each line right after the manifold. To winterize, I hook up the air compressor to a winterizing cap and cycle each one individually plus the thru hull. Then I fill the strainer with AF and hit it again with air to blow some into the pump and all done in about 3 minutes.
     
    rlynch03 likes this.
  14. ttmott

    ttmott PhD in OCD TECHNICAL Contributor GOLD Sponsor

    Apr 3, 2012
    Space Coast Florida
    2006 52 Sedan Bridge
    Cummins QSM11
    There is a drain plug at the bottom of the rear end of each engine muffler. I was back there the other day looking for a way to add some generator vibration isolators and those plugs look rusted and leaking. Has anyone looked at theirs and replaced? Tough area to get to.
    upload_2022-2-19_8-22-2.png
     
  15. Jeremygavin

    Jeremygavin Well-Known Member GOLD Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    Are you asking if anyone changed the drains in the mufflers or the mounts on the genny? I drain my mufflers each fall before running antifreeze through the mains when I am winterizing so that I don’t have diluted water in the mufflers in the winter.
     
    rlynch03 likes this.
  16. ttmott

    ttmott PhD in OCD TECHNICAL Contributor GOLD Sponsor

    Apr 3, 2012
    Space Coast Florida
    2006 52 Sedan Bridge
    Cummins QSM11
    Sorry, confusing; while I was doing one thing, I noticed another - the muffler drain plugs.
    So, you have those drain plugs accessed each season. What are they? Size, material, and threading? I've got to get in there and change them.
     
  17. Jeremygavin

    Jeremygavin Well-Known Member GOLD Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    They are just a SS bolt screwed into the fiberglass muffler. There is a hole in the fiberglass that they either tapped or the bolt was self tapping. The bolts have an o-ring on them but mine were leaking as well when I bought the boat so I wrap the threads with Teflon tape before I put them back in and they haven’t leaked since I started doing that.
     
  18. ttmott

    ttmott PhD in OCD TECHNICAL Contributor GOLD Sponsor

    Apr 3, 2012
    Space Coast Florida
    2006 52 Sedan Bridge
    Cummins QSM11
    Ok, Thanks!
    Standard straight thread bolt - do you know what size it is? A 9/16-inch wrench fitting the head would be a 3/8" bolt for example.
     
  19. Jeremygavin

    Jeremygavin Well-Known Member GOLD Sponsor

    Mar 6, 2012
    Cape Cod, MA
    2011 520 Sedan Bridge
    2016 Sea Ray 19 SPX OB
    2019 Walker Bay Generation 340
    Cummins QSM11s
    Mercury 150 Fourstroke
    Honda 40hp
    My memory is terrible but I believe it is 7/16 bolt head so 1/4” threads. I remember them being coarse threads.
     
  20. rlynch03

    rlynch03 Active Member GOLD Sponsor

    758
    May 16, 2019
    Annapolis, MD
    07 52 Sedan Bridge, 2019 Brig Falcon 360HT-30HP Honda, 2003 16' Dauntless
    Cummins QSM 11 660 HP w/ ZF 325-1A
    Didn't know the exhaust had a drain… adding to the list to check.

    This board is invaluable…

    Thanks
     

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