Official Cummins QSC-500 Thread

Discussion in 'Diesel Engines/Drives/Transmissions/Props' started by Hampton, Nov 16, 2011.

  1. Hampton

    Hampton Air Defense Dept TECHNICAL Contributor

    Nov 26, 2006
    Panama City, Fl
    2008 44 Sedan Bridge
    Cummins QSC-500's
    Straight Drives
    I figure there are enough threads about boats, and there are plenty of models of boats with these engines and their variants, so, how about an official thread for the engines?

    My SN 46720354 port, 46719228 stbd.
    Family 7CEX M0505 AAC
    IMO Family M14 QTA
    QSC 8.3 500 HO

    Impellers: Sherwood 260000K Impellers (K=Kit=includes gasket(s))

    Belts: 8-ribbed belts (7 grooves), 1 1/8" wide, 66" outside diameter. About $75 for two from dealer
    Dayco Poly Rib Gold Label 5080650 (Also labeled "8PK 6650" - 8 Pack?)

    I show the following filters:
    Water Sep: 3971757 (Racor 1000MA - Book answer) (900MA in my bilge - 30micron - RA2040PMOR)
    Fuel Filter: 3959612 (Cummins Filtration Part #FF5488)
    Oil Filter: 3401544 (Cummins Filtration Part #LF9009)
    Air Filter: Cummins P/N 3971070 (Element Set# 41-2008) (Air Filter # 41-1030)

    Zincs (Boat Zincs dot Com)
    E-1 1/2 NPT (E-1Z zinc only) 2" Main (4 per engine)
    E-2 3/8 NPT (E-2Z zinc only) 2" Heat exchangers (2 per engine)

    OIL: SAE 15W-40 heavy duty engine oil such as Valvoline Premium Blue which meets the following Performance Specs:

    (Cummins) CES-20071, CES-20076 API CH-4/SJ, API CH-4
    CES-20078 API CI-4/SK, API CI-4
    CES-20075 NOT RECOMMENDED API CF-4/SG NOT RECOMMENDED

    Racors: 900MA - Engines - 30micron - RA2040PMOR
    500MA - Genny - 30 micron - RA2010PMOR

    Coolant:
    Test Strips: FleetGuard CC 2606B http://www.ryderfleetproducts.com/r...st-Kit-Strips-3-Way-Each/erm/productDetail.do (stolen from another thread)

    Engine Test Kits: Engine Models QSC 8.3 500 HO
    Order this oil analysis kit: CC2543 – Advanced Testing
    Monitor Wharehouse: (931) 526-9551 (order kit there)
     
    Last edited: Mar 20, 2012
  2. Sum Escape

    Sum Escape Member

    377
    Apr 7, 2009
    West Michigan
    2006 Grand Banks 47 Europa
    C 9 503 HP CATs
    Try this link. It is free to register and you can save your engine serial number etc so all searches for part numbers etc are made easy. Genset parts too. Good luck.

    https://quickserve.cummins.com/info/index.html

    Eventually you will need Walker Air Sep service kits too (600-750 hours). Here is the part number, etc.
    [TABLE="width: 350"]
    [TR]
    [TD="class: xl65, width: 68, bgcolor: transparent"]AirSep Service Kit[/TD]
    [TD="class: xl64, width: 70, bgcolor: transparent"]SERVICE KIT CUMMINS QSC[/TD]
    [TD="class: xl64, width: 64, bgcolor: transparent"]200482[/TD]
    [TD="class: xl64, width: 72, bgcolor: transparent"]MFP#: 1000267[/TD]
    [TD="width: 192, bgcolor: transparent, colspan: 3"](818) 252-7788 (Walker)

    [/TD]
    [/TR]
    [/TABLE]
     
  3. Labbur

    Labbur New Member

    71
    Aug 2, 2009
    Georgia fresh water
    2008 44DB
    Cummins qsc 500
    Great idea addressing the engine side? I too have the 500s and they are great. I just visited with the Cummins folks and discussed the belts? I will call my contact but I have a question of you. How many hours do you have on your belts and are you just buying to have on hand? I show very little wear at 500 hours.
     
  4. Hampton

    Hampton Air Defense Dept TECHNICAL Contributor

    Nov 26, 2006
    Panama City, Fl
    2008 44 Sedan Bridge
    Cummins QSC-500's
    Straight Drives
    Very little wear 400 hours. These are the biggest reason for being stranded in our area. Let me know what you hear!
     
  5. Hampton

    Hampton Air Defense Dept TECHNICAL Contributor

    Nov 26, 2006
    Panama City, Fl
    2008 44 Sedan Bridge
    Cummins QSC-500's
    Straight Drives
    Good info. I'm regisrered at that site. I input my serial numbers. All I found was a link which had me measure them, count the ribs, and then it had a choice of belts based on driving conditions - on the highway.
     
  6. fwebster

    fwebster Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    Oct 6, 2006
    Middle Tennessee ; Panama City Beach, FL
    1996 450DA
    3116 Caterpillars


    Here is a thread discussing the belts:

    http://clubsearay.com/showthread.ph...ns-QSC-Overheating?highlight=heads+up+Cummins


    The long and the short of it is that Cummins QSC's use a serpentine belt with a spring loaded idler providing tension to keep the belt tight so it stays on the pulleys and idlers. Hot weather and a hot engine room causes the belts to stretch and when they do, the idler sort of dances on the belt instead of holding a constant pressure. When this happens, the belt will frequently jump off the idler or a pulley and fall into the bilge under the engine. The effect is that the circulating pump stops turning and the engine immediately overheats. I don't think there is a set number of hours and much as total time and days in extremely hot conditions. We've seen it happen on '07's '08's and 09's with as few as 200 hours on them.

    The last thing any of us need to have happen is to have to dig a broken or stretched belt out from under an over heated engine in a 150 degree engine room and try to put it back on the engine while we are disabled in a busy water-way or in 6-8 ft seas 100 miles off-shore. You are far better off to carry a spare and to change the belts on a maintenance preemptive strike before they are thrown off or break.
     
    FeLizDream likes this.
  7. Hampton

    Hampton Air Defense Dept TECHNICAL Contributor

    Nov 26, 2006
    Panama City, Fl
    2008 44 Sedan Bridge
    Cummins QSC-500's
    Straight Drives
    Thank you, Frank, now, where do I order replacements?
     
  8. fwebster

    fwebster Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    Oct 6, 2006
    Middle Tennessee ; Panama City Beach, FL
    1996 450DA
    3116 Caterpillars
    John,

    I don't think those are special belts and are probably used on other C-series Cummins engines. If you can come up with a part number, I have a good friend who is a Cummins mid-range dealer outside of Nashville. They don't know anything about a boat, but are diesel pros for off-road, construction and over the road equipment. I'm sure they can help and I'd bet their pricing for filters and parts is more geared toward Bubba's truck than what you'd expect at a marina somewhere. You would need part numbers since they have no way to look up marine product applications. So you are one step closer...... Have you asked John at TIM about a part number. He probably has the belts in stock since every 48DA and 44DB over there has gone thru more than one set of belts.
     
  9. Hampton

    Hampton Air Defense Dept TECHNICAL Contributor

    Nov 26, 2006
    Panama City, Fl
    2008 44 Sedan Bridge
    Cummins QSC-500's
    Straight Drives
    I haven't asked John. I hate to ask him for a part number and then go somewhere else for the part.
     
  10. islandhopper00

    islandhopper00 Active Member

    Jan 4, 2007
    Lake Norman (Denver) NC
    240 Sundancer
    5.0L 260hp, BIII outdrive
    I hope this isn't to elementary of a question but, have you looked at the belt (the one on the boat) to see if there are part numbers on it?
     
  11. Hampton

    Hampton Air Defense Dept TECHNICAL Contributor

    Nov 26, 2006
    Panama City, Fl
    2008 44 Sedan Bridge
    Cummins QSC-500's
    Straight Drives
    I have seen them when I measured them, but I don't remember a number. They ride on both sides as the wind around the engine, so, I'm sure that any numbers are worn off, but, who knows? Maybe I'll go have another look. I'll probably just ask John the numbers like Frank suggested.
     
  12. islandhopper00

    islandhopper00 Active Member

    Jan 4, 2007
    Lake Norman (Denver) NC
    240 Sundancer
    5.0L 260hp, BIII outdrive
    I really shouldn't compare the truck version, to the marine version, but the numbers on my truck belts stayed on it. Maybe it's a last case senerio. I hope you find them.

    John, on another note.......how about one of thoes fine stories you tell with all the pilot jargon. Yea, I'm the one who loves to read that stuff! haha
     
  13. islandhopper00

    islandhopper00 Active Member

    Jan 4, 2007
    Lake Norman (Denver) NC
    240 Sundancer
    5.0L 260hp, BIII outdrive
    I'll have to smack myself, I'm talking about a QSB engine and your dealing with a QSC, completly different anmial. Doaahhh! Sorry.

    Frank W, at least I went back and checked myself. haha

    I kept thinking that is not enough motor to push that boat!
     
    Last edited: Nov 21, 2011
  14. islandhopper00

    islandhopper00 Active Member

    Jan 4, 2007
    Lake Norman (Denver) NC
    240 Sundancer
    5.0L 260hp, BIII outdrive
    Hello again John, I don't know what has possesed me in looking for your belt but here is what I've found.

    You need your engine serial numbers to get the proper belt. As I understand it, cummins doesn't build these engines the same way everytime. So after talking to the Cummins parts guy, he needs a serial number to figure out which belt will be the correct fit.

    If this is all hog wash, I'm just repeating what the parts guy told me. Heck it's probably what you figured out too! haha
     
  15. fwebster

    fwebster Well-Known Member TECHNICAL Contributor PLATINUM Sponsor

    Oct 6, 2006
    Middle Tennessee ; Panama City Beach, FL
    1996 450DA
    3116 Caterpillars
    Here is a thought.........this is going to be an every other year thing, so just go buy the right belts from the parts dept at the marina and then you will have spares + the right part number. After that you can order the belts from a non-marine Cummins dealer like the guys I mentioned.

    My experience with John is that he is fair and won't rape you on pricing.......BTW, he does not report to the service manager.
     
  16. Alex F

    Alex F Well-Known Member

    Nov 14, 2006
    East Coast
    2005 420DB with AB 11 DLX Tender, Raymarine Dual E120 MFD/Radar/XMWeather, ST7001 A/P, AIS, SeaLift
    T-Cummins 450Cs Straight-Drives, 9KW Onan Generator, 40HP Yamaha for tender.
    Wait a minute........Frank, are you sayng that we need to change the belts every other year? Or does this apply only to QSC500s due to the belt desing issue?

    BTW, your idea is a good one. If it's so hard to find the right part I would do as you said.
     
    Last edited: Nov 21, 2011
  17. islandhopper00

    islandhopper00 Active Member

    Jan 4, 2007
    Lake Norman (Denver) NC
    240 Sundancer
    5.0L 260hp, BIII outdrive
    Frank I think you are reading this wrong. At least I hope you have.
    I'm not trying to buy belts, I was trying to help "John" find belts. I don't know John, just that I was trying to be helpful. I guess I should have kept myself out of the diesel thread. I appologize. No scarcasm I promise.
    Maybe I'm reading your post wrong.
     
  18. islandhopper00

    islandhopper00 Active Member

    Jan 4, 2007
    Lake Norman (Denver) NC
    240 Sundancer
    5.0L 260hp, BIII outdrive
    I went back and read. When I write "John" I meant "Hampton". Not John from your parts source.

    Sorry if I was confusing, and no Hampton didn't ask me to do anything. I was sticking my nose in where it didn't belong. I thought I had an answer and then realized I was talking about a different motor.

    I appologize again. I didn't mean to cause a problem. Mike

    I'm messing up a perfectly good thread, MODS please delete my postings to this thread please.
     
    Last edited: Nov 21, 2011
  19. Hampton

    Hampton Air Defense Dept TECHNICAL Contributor

    Nov 26, 2006
    Panama City, Fl
    2008 44 Sedan Bridge
    Cummins QSC-500's
    Straight Drives
    No. Frank meant for me to buy them from the other John. Probably will. Serial number on thread 1.
     
  20. islandhopper00

    islandhopper00 Active Member

    Jan 4, 2007
    Lake Norman (Denver) NC
    240 Sundancer
    5.0L 260hp, BIII outdrive
    Oh.......OK......nevermind! haha I just didn't want to make Frank mad, or anyone else.
     

Share This Page

Show Sidebar