Cummins 6CTA collapsed hose

Discussion in 'Diesel Engines/Drives/Transmissions/Props' started by craigswardmtb, Nov 12, 2019.

  1. Irie308

    Irie308 Well-Known Member SILVER Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    Good to know
     
  2. Irie308

    Irie308 Well-Known Member SILVER Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    So, I was feeling strong yesterday so I removed the aftercoolers. Starboard took all of 20 mins. The port took maybe 45 mins to an hour. The main issue was the lower bolts. Are very hard to get to. I tried to remove the lower bracket but the 2 bolts would not budge and I couldn’t get good leverage to force it. I may try an impact wrench to take it off as I think it would make the reinstall much easier. So removal wise I would give it 5 wrenches on the difficulty scale. 10 being the removal of an impeller on our previous 320.

    I ran into a small issue with the tube coming off the turbo but will create a new thread for that.
     
    Last edited: Nov 25, 2019
  3. Jaybeaux

    Jaybeaux Well-Known Member SILVER Sponsor

    681
    Jan 3, 2016
    Upper Potomac River
    420 Sundancer 2004
    Naught On Call
    Cummins 6CTA-8.3's with V-Drives
    9KW Onan Genset
    I did the same thing....tore that little hose. Very expensive. I believe I paid $50 for it at my Service Dept. But they had it!

    Jaybeaux
     
  4. Irie308

    Irie308 Well-Known Member SILVER Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    I actually discovered a a break in the weld that attaches the bracket to the pipe leading from the turbo. Looks like there was a weak spot in the weld. Didn’t even try to unbolt it. Not sure if it was due to vibrations
     

    Attached Files:

    Jaybeaux likes this.
  5. NotHerDecision

    NotHerDecision Well-Known Member PLATINUM Sponsor

    Jun 28, 2016
    Houston, Texas
    2001 Sea Ray 460 Sundancer
    2014 Seadoo 155 LTD
    2105 Seadoo 130 SE
    2013 Mercury Dinghy
    Cummins 6CTA 8.3L
    Most likely corroded from the inside out. They’re inexpensive and I would replace all the pipes on the cooling circuit.
     
  6. Tomco

    Tomco Active Member

    263
    Aug 16, 2012
    Ottawa, Ontario
    2004 420 Sedan Bridge
    GHS Hydraulic Lift
    11' Walker Bay, 30hp
    Cummins 6CTA 8.3M
    Just finished up doing mine. On the starboard side I removed the piping from the turbo to the AC first, which opened up some room. The three lower screws were on very tight and wouldn't budge - I used a 1/2" torque wrench to get enough leverage. Having done it once, it will go quicker next time.

    Question on re-assembly, is there any sealant/lubricant used with the rubber hose connections to facilitate easier removal down the road?
     
  7. NotHerDecision

    NotHerDecision Well-Known Member PLATINUM Sponsor

    Jun 28, 2016
    Houston, Texas
    2001 Sea Ray 460 Sundancer
    2014 Seadoo 155 LTD
    2105 Seadoo 130 SE
    2013 Mercury Dinghy
    Cummins 6CTA 8.3L
    yes, Rectorseal 5.
     
    Jaybeaux likes this.
  8. Irie308

    Irie308 Well-Known Member SILVER Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    So i spoke with cummings and Seaboard and that pipe is about $435! I think i'm going to see if it can be welded.
     
    Cocktail Time likes this.
  9. NotHerDecision

    NotHerDecision Well-Known Member PLATINUM Sponsor

    Jun 28, 2016
    Houston, Texas
    2001 Sea Ray 460 Sundancer
    2014 Seadoo 155 LTD
    2105 Seadoo 130 SE
    2013 Mercury Dinghy
    Cummins 6CTA 8.3L
    I didn’t believe that so I checked. Part number is 3897639 and holy crap it’s gold plated on the inside with platinum and diamonds on both ends.

    found it for 375 but that’s strong for a pipe.
     
  10. Irie308

    Irie308 Well-Known Member SILVER Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    Yeah, i thought we were looking at different pipes when I spoke to them but Cummins confirmed it.
     
  11. Blueone

    Blueone Well-Known Member GOLD Sponsor

    Jan 24, 2007
    Lake Erie, Ohio
    2004 420 Sundancer
    Cummins 6CTA 450's
    It can definetly be repaired... If you can't find someone, I have a guy up here.
     
    Cocktail Time likes this.
  12. Irie308

    Irie308 Well-Known Member SILVER Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    Thanks, going to check with my local shops this weekend.
     
    Cocktail Time likes this.
  13. craigswardmtb

    craigswardmtb Active Member

    143
    Jul 2, 2013
    Mystic, CT
    2004 420 DB
    2005 360 Fiesta Vee
    Cummins 6CTA
    Curious Irie, where in CT are you? Always looking for good shops, mechanics etc.
    Good luck. I start my Aftercoolers next week.
     
  14. Irie308

    Irie308 Well-Known Member SILVER Sponsor

    May 28, 2013
    CT
    2004 420 Sedan Bridge, GHS Hydraulic Lift
    Dual Raymarine E120W
    AB Mares 10 VSX with 30 hp Tohatsu
    Cummins 450C 8.3 L Turbocharged
    Upper Fairfield county. Just had it welded. Picked it up on the way to work this am. Cost me all of $20 ($10 plus tip)
     
    Blueone likes this.
  15. JM390

    JM390 New Member

    20
    Oct 1, 2019
    2003 Sea Ray 390 Motoryacht
    Cummins 480 CE
    CRaig did you used to own or still own that Rinker up in Mystic with the wrapped black hull? Was for sale last year.....?
     
  16. JM390

    JM390 New Member

    20
    Oct 1, 2019
    2003 Sea Ray 390 Motoryacht
    Cummins 480 CE
    Ah it is you. Funny we chatted when we owned Rinkers and now here we are with the Sea Ray's . shoot me a text sometime. Its Josh
     
  17. craigswardmtb

    craigswardmtb Active Member

    143
    Jul 2, 2013
    Mystic, CT
    2004 420 DB
    2005 360 Fiesta Vee
    Cummins 6CTA
    Too funny. Yes i sold it this year. Are you the Josh that looked at my boat?
     
  18. JM390

    JM390 New Member

    20
    Oct 1, 2019
    2003 Sea Ray 390 Motoryacht
    Cummins 480 CE
    Yes sir that’s me bud. Glad to see you are doing well .
     

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