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Viewing 18 topics - 1 through 18 (of 18 total)
    • Cummins Marine Forum Topics
    • Leaking SMX pump

      This topic has 17 replies, has 6 voices, and was last updated byBill 3 years ago

      August 31, 2020 at 6:09 am I bought two new SMX pumps in late 2014 and installed them on my 450 Diamonds. The hard to get to port pump has started leaking. Pictures of good starboard pump and suspect port pump. Notice port pump has green all around water weep holes to drain water when water seal fails. Starboard pump is pristine there. I plugged bottom most weep hole with dry paper towel and ran engine for five minutes. When I pulled out the towel the inside of it wa…

      Started by: Bill in: Cummins Marine Engines

      17 Replies
      October 29, 2020 at 12:03 pm Humpty Dumpty is back together. First picture is the cleaned out housing ready for the new seal. Second picture is the new main seal installed. That went in easy pushing with gloved fingertips. Final picture is with the shaft seal and cap locked in place with the retaining clip. To push the clip in place I used a piece of 1ā€ pvc pipe. It was the right inside diameter to push the clip down until it snapped into its shaft groove.

      Last Post by: Bill posted: 3 years ago

    • 6CTA 420 Diamond.

      This topic has 4 replies, has 3 voices, and was last updated byBill Receski 3 years ago

      October 23, 2020 at 4:07 am Just purchased a boat with this motor in it. Any info about this motor? Any information I need to know. The good, the bad. Motor has 2500 hours on it. Runs very well. Thanks

      Started by: Bill Receski in: Cummins Marine Engines

      4 Replies
      October 28, 2020 at 3:56 am Thanks Tony, I will be checking the after coolers. What problems did you notice with your after coolers? Bill

      Last Post by: Bill Receski posted: 3 years ago

    • 6BTA Heat Exchanger Service

      This topic has 7 replies, has 5 voices, and was last updated byRob Schepis 3 years ago

      April 27, 2020 at 9:28 am Ready to service my HX’s and wondering if there are any tips or protocol similar to the Aftercooler protocol. All I can really find is people doing a recirculating flush with Rydlyme or similar but I’ve not seen anything about removing the core and doing a bench type service. Also wondering if a healthy application of Alco Metalube to the end parts is recommended as in the Aftercooler protocol. Thanks for any tips/pictures.

      Started by: Todd Hankins in: Cummins Marine Engines

      7 Replies
      August 27, 2020 at 3:16 am Dave Galehouse wrote: Just curious where exactly you apply the rectorseal prior to reassembly? I also have a 6CTA and just purchased new gasketā€™s and washers for the end caps to eventually inspect the heat exchanger. On the mating surfaces of the cap and cooler body as well as the gum washer at the bolt.

      Last Post by: Rob Schepis posted: 3 years ago

    • Water filter with additive for C-Series Cummins

      This topic has 7 replies, has 5 voices, and was last updated byTony 4 years ago

      March 1, 2017 at 8:37 am I’ve owned my 2005 Sea Ray with twin 480 CEs for less than a year.Ā  I had a reputable diesel tech do the winterizing/maintenance last fall and I supplied the filters, zincs, etc.Ā  The previous owner used a Fleetguard WF2073 water filter so that is what I bought.Ā  However, looking into the issue further I see this filter supplies 8 units of DCA4 coolant additive, and other part numbers are available with more, less, or none of the additive.…

      Started by: Joel Hilden in: Cummins Marine Engines

      7 Replies
      May 9, 2020 at 10:34 pm Thanks Tony.! PS For sale – 2 x WF2073s. Going cheap! šŸ™‚ Tony Athens wrote: If you started with good coolant, a WF2073 should go 1000 hours with no issues..

      Last Post by: Tony posted: 4 years ago

    • Flush connection question

      This topic has 12 replies, has 6 voices, and was last updated byTony 4 years ago

      April 26, 2020 at 1:14 pm Hello. I’ve enjoyed all the posts about fresh water flushing. I currently have flush connections on my strainers that I connect the hose to directly. I’d like to add a ball valve and quick disconnect to avoid having to screw the hose connection on and make it much quicker. Just wondering if you guys see any issues with a quick disconnect type connection? Also, after shutting engine down and the fresh water is still on, does the e…

      Started by: marks737 in: Cummins Marine Engines

      12 Replies
      May 1, 2020 at 9:32 pm Thanks heaps Russ! Looks like it was time well spent. Great setup. Cheers Tony

      Last Post by: Tony posted: 4 years ago

    • Oil Filter Upgrade 6CTA 8.3M2

      This topic has 6 replies, has 4 voices, and was last updated byROBERT L PHILPOTT 4 years ago

      March 28, 2020 at 9:45 pm I hear about the new LF14009NN filters. Can I upgrade to these from LF9009? Would there be any advantage over the LF9009 or Disadvantages..?? I here guys that have these engines in heavy equipment are switching to these. Not sure about marine use. Thanks for the help. Robert

      Started by: ROBERT L PHILPOTT in: Cummins Marine Engines

      6 Replies
      March 30, 2020 at 8:30 pm Really appreciate the reply. You & your opinion mean alot to me. Only wish your shop was in Seattle! — Robert

      Last Post by: ROBERT L PHILPOTT posted: 4 years ago

    • 6CTA8.3-M2, fuel curve, 2200 revs, GPH?

      This topic has 2 replies, has 2 voices, and was last updated byTony 4 years ago

      January 10, 2020 at 3:18 am Hi I have the 6CTA8.3-M2 and am trying to clarify the GPH at 2200 revs. I don’t have a table like attached for the M3 version. Should I be aiming for the same, 13.6 as shown? Thanks in advance Tony

      Started by: Tony in: Cummins Marine Engines

      2 Replies
      January 10, 2020 at 3:49 pm Hi Tony Thanks heaps. I think I am just too cautious about pushing the engines that hard! I will try to rustle up the courage šŸ™‚ Serial numbers 45395393 45395370 You gave me this document a while back for my CPL. Cheers Tony

      Last Post by: Tony posted: 4 years ago

    • Nothin like clean seawater components

      This topic has 10 replies, has 6 voices, and was last updated byRob Schepis 4 years ago

      November 1, 2019 at 6:57 pm Pulled entire seawater side of the system and soaked the parts in barnacle buster and what a difference!!! Can’t wait to start assembly, prime and paint then install. I’m just really glad I took this stuff apart. Does anyone know the paint color or code for the Cummins white ?

      Started by: worldcatlemon in: Cummins Marine Engines

      10 Replies
      November 5, 2019 at 5:14 am worldcatlemon wrote: Rob, I removed the aftercooler core from the housing, soaked it in boiling water with Simple Green to remove any oil, then rinsed it, blew it dry with compressed air then soaked it in Barnacle buster to remove the calcium deposits. Clean as a whistle I do caution against soaking the entire core in any acid based solution, the air side is much more delicate and, as we know, the acid does no good there, it is for descaling of …

      Last Post by: Rob Schepis posted: 4 years ago

    • Cummins 6CTA8.3 M3

      This topic has 6 replies, has 4 voices, and was last updated byT. Hering 4 years ago

      July 19, 2019 at 2:21 pm Hopefully this is an easy one. Have a new (to me) trawler with twin 450 Diamond series. I need to change the tranny oil. Where can I find out exactly what to use?

      Started by: T. Hering in: Cummins Marine Engines

      6 Replies
      July 25, 2019 at 10:15 am The gearbox type is: IRM 280A.2 Upon further examination I also found SAE30 as the oil type. Thanks all.

      Last Post by: T. Hering posted: 4 years ago

    • Aftercooler test rig question

      This topic has 2 replies, has 2 voices, and was last updated byTony 4 years ago

      June 24, 2019 at 2:24 am Hi I have made up a test rig to test my Aftercooler. Just checking, to prevent damaging the core – is there a ‘maximum torque’ for the threaded rod? Does it matter what rubber I use for the gaskets too? Cheers Tony

      Started by: Tony in: Cummins Marine Engines

      2 Replies
      June 24, 2019 at 3:55 pm Thanks heaps Rob. I have some neoprene sheet that sounds like the go. Cheers Tony

      Last Post by: Tony posted: 4 years ago

    • engine service

      This topic has 7 replies, has 5 voices, and was last updated byFireisland1 4 years ago

      June 19, 2019 at 9:19 pm Ive just removed my two QSB370s from a 2005 36 Australian manufactured blackwatch to basically clean and tidy up the engine bay. The engines have 2100Hrs and have been serviced regularly with heat exchangers removed every two years striped cleaned and resembled as per your protocol. Ive had the boat for ten years and it had 600Hrs When I originally got he boat the max revs were only 2850. Ive since had the props re pitched and now see 3100 fu…

      Started by: gerard hryniuk in: Cummins Marine Engines

      7 Replies
      June 21, 2019 at 3:57 pm I would replace the starter if itā€™s in your budget. Itā€™s a pain to do in the boat. If not I would at least remove the bolts, clean and replace with moly or tefgel

      Last Post by: Fireisland1 posted: 4 years ago

    • Walker Fuel Sep. Any good?

      This topic has 4 replies, has 3 voices, and was last updated byTony 4 years ago

      May 31, 2019 at 11:45 pm Hi all What does the brains trust reckon of the Walker Fuel Sep? I have them installed. What does it do? Worth servicing or removing? Cheers Tony

      Started by: Tony in: Cummins Marine Engines

      4 Replies
      June 2, 2019 at 2:49 pm Thanks guys. This is my current setup with the Walker in between… Cheers, Tony

      Last Post by: Tony posted: 4 years ago

    • 6CTA8.3-M2, TLC, 1000hrs, Tasmania, Australia 1 2

      This topic has 38 replies, has 4 voices, and was last updated byTony 4 years ago

      April 25, 2019 at 9:43 pm Hi Tony, it is Tony here from Tasmania, Australia. I was talking to you guys on the forum a little while ago about a 1997 Riviera 39 Flybridge cruiser I was looking to buy. I now have the boat here after bringing it 650 nautical miles from Sydney to Hobart. The boat went pretty well and now I am looking at what needs to be done to look after the engines. They are 6CTA8.3-M2’s with just over 1000 miles on them. Coling system has not been of…

      Started by: Tony in: Cummins Marine Engines

      38 Replies
      May 31, 2019 at 4:04 pm Hi Steve Thanks heaps for that info. I will do some research…. it seems that very few Riv engine room setups are the same, so custom is probably the go. I will see who I can find locally for now. Cheers Tony

      Last Post by: Tony posted: 4 years ago

    • 6CTA Engine Maintenance (Engine Paint)

      This topic has 15 replies, has 5 voices, and was last updated byStephen Oliver 4 years ago

      August 16, 2018 at 6:47 pm Hi guys What engine paint should I use to tidy up some sea water leak rust stains etc on my 1997 6CTA Cummins 450’s? I’d prefer brush on rather than aerosol due to the engine room confines and fiddly nature of the touch ups. Cummins South Pacific quote beige paint in oil 3885999 and water 3885925 based. Which is better or can I simply get the local auto paint shop to make me some paint using a formula or color sample? Does anyone hav…

      Started by: Mark Theyer in: Cummins Marine Engines

      15 Replies
      May 22, 2019 at 8:37 pm I think the 6CTA is a whiter paint is it not over the 6BTA? I have been using dulux fast dry enamel for some non critical bits and on the genset (another ignored mechanical item I am finding!) they do an antique white which may be a closeish match for the whiter cummins paint. If not I guess you are down to a auto paint shop and get them to colour match and mix for you.. I have done this in cans before.. Steve

      Last Post by: Stephen Oliver posted: 4 years ago

    • Fuel Injector Maintenance Cycle

      This topic has 6 replies, has 5 voices, and was last updated byTony 5 years ago

      March 15, 2019 at 5:28 pm I have a 270 HP Cummins 6BTA in a 2005 Nordic Tug. The engine has about 3400 hours and is typically operated at about 1400 RPM. I have done the maintenance for the past 10 years and the engine is operating without issue. Fuel burn has not increased and the engine starts and shuts down smoothly. Having said all that, I am wondering if there is a recommended time to remove and inspect the injectors or if they can be left alone for as long as th…

      Started by: Peter Abbott in: Cummins Marine Engines

      6 Replies
      May 8, 2019 at 1:09 am Thanks Philip. Sounds good to me. Stop worrying?!? My first boat ever is a 39ft cruiser with 16.6 ltrs of turbo charged diesel… i worry ?????

      Last Post by: Tony posted: 5 years ago

    • Pre-purchase – 1997 6CTA8.3M – advice? 1 2

      This topic has 26 replies, has 3 voices, and was last updated byTony 5 years ago

      January 1, 2019 at 2:58 am Hi all Next week I am getting a pre-purchase survey done on a boat in Australia. This will be my first boat… so it is a big leap! It is a 1997 Riviera 39 with twin Cummins 6CTA8.3M – just over 900 hours. I have some service records from the broker for the past few years, but it is not comprehensive. It is due for a service and there is no record of the cooling system being done in the past few years. I am getting a hull and engine su…

      Started by: Tony in: Cummins Marine Engines

      26 Replies
      January 10, 2019 at 11:44 pm Hi again On that note – with the boat about 800nm from me, the first shakedown voyage will be a good one…! I will be getting a major service done. With money not being unlimited (is it ever??!) – what are my priorities? – seawater pump bench service? – heat exchanger – to what degree? – aftercooler – is a new core the way to go? – is there a hose and clamp kit for CPL1929? US-AUD exchange rat…

      Last Post by: Tony posted: 5 years ago

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Viewing 18 topics - 1 through 18 (of 18 total)