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- Cummins Marine Forum Topics
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Delete combo fuel block and fuel cooler.
This topic has 8 replies, has 6 voices, and was last updated by
4 months ago
December 9, 2019 at 2:23 pm Iām in process of deleting fuel block and cooler and following advice from āTonyās Tipsā and also have reviewed the YouTube video. I am confused regarding the use of multiple fittings (5) for reconnecting the 1/2āsupply and 3/8ā return lines. The Cummins original set up is with reusable face seal fittings. Why not use one each of the existing 1/2ā 45deg (supply) and 3/8ā straight (return) fittings? These fittings are very easily removed from or…
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in: Cummins Marine Engines
8 RepliesJanuary 7, 2024 at 6:58 am Bill Do you happen to remember the sizes of the two fittings you used? Ā I would like to have them with me when I go to the boat to complete the modification.ĀLast Post by:
posted: 4 months ago
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Trans gear sudden shift in to reverse
This topic has 1 reply, has 2 voices, and was last updated by
9 months ago
August 6, 2023 at 12:15 pm Boat is a 41 ft salon bridge w/ twin Cummins 6BTA, 370 and ZF Hurth HSW800 A2 – 2.0 gears. I was running in forward, both engines at approximately 2700 RPM, 15-16 kts. Felt a sudden sort of jerk motion and what sounded like out of control engine revs. I immediately pulled both throttles back to idle and transmission shifters to neutral, noticing instantly the port engine had shut down. Starboard side was performing properly , shifting prop…
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in: Cummins Marine Engines
1 ReplyAugust 13, 2023 at 4:53 pm The reverse clutches are likely jammed so they will not release from reverse. Ā Likely pull the gearbox time and take it to a mechanic or at least get the mechanic to your boat to confirm.. Check the shifter mechanism also as this should not have occured. Ā That’s all I can offer. Hm, a thought.Ā Ā Use a pressure guage of about a 500 to 600 PSI range to check for pressure in reverse.Ā Ā check pressure to reverse when shifter to…Last Post by:
posted: 9 months ago
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Which oil?
This topic has 1 reply, has 2 voices, and was last updated by
1 year ago September 5, 2022 at 9:44 am Engines are 6BTA 5.9 370 HP Have been using Shell Rotella T4 15w40 for many years but recently hearing multi-viscosity not the best way to go for my type of use, 65 degrees F and up, 100 hrs/year, 6 month season in Great Lakes. Should I be using straight 40 weight or something else or stick with what Iāve been using? Would like to hear some opinions. Thanks
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in: Cummins Marine Engines
1 ReplySeptember 5, 2022 at 2:17 pm Who is giving you this info? Cummins recommends 15W-40 for normal operation at all temps above 5 deg F.Last Post by:
posted: 1 year ago
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Relocating oil pressure sender.
This topic has 12 replies, has 5 voices, and was last updated by
1 year ago
November 4, 2019 at 8:05 am Cummins 6BTA-5.9, mfg 1998. I am removing the fuel cooler and fuel block and am following the video provided by SB Marine. Moving the oil pressure sender seems pretty simple but unlike the video with one sender, I have an additional sensor. I think I spotted two hex head plugs, in the area where I would relocate the sender. My question is, are these two ports equal and is this where I need to place the second sensor? I am not at the boat now so …
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in: Cummins Marine Engines
12 RepliesJune 1, 2022 at 8:50 am Rob, Thanks, I confirmed I have 1/8″ npt but only 2 gallery ports both tucked up behind the RW pump and stop solenoid. If I cant get to those easily (thinking I cannot), any issue wiring the alarm sender to the top of the oil filter housing?Ā TYLast Post by:
posted: 1 year ago
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Barrymounts removed
This topic has 2 replies, has 2 voices, and was last updated by
3 years ago May 8, 2021 at 5:43 am I have completed replacement of all my engine mounts with SMX purple mounts. I noticed a single digit number stamped in the underside of each of the Barrymounts I removed, not all the same but some duplicates. Can anyone say what these numbers mean?
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in: General Discussion
2 RepliesMay 8, 2021 at 7:06 pm Photos of old Barry Mounts showing stamped numbers in question.Last Post by:
posted: 3 years ago
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Engine mounts, proper hardware arrangement?
This topic has 3 replies, has 3 voices, and was last updated by
3 years ago
February 24, 2021 at 5:22 am I have looked at quite a few engine mounts and am now confused as to what is the proper order to install the fasteners. I have seen, from bottom to top, 2 half nuts, washer, engine bracket, washer, 1 full nut. I have seen the same arrangement in reverse. And a third arrangement, full nut top and bottom with no half nut. So……. what is the proper way to do this?
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in: Cummins Marine Engines
3 RepliesMarch 2, 2021 at 11:21 am I removed a stud from my cummins barry mount this weekend by accident because I couldn’t get the adjustment nuts to loosen and the stud unthreaded from the mount. I believe after looking at the purple mounts for sale on here that they are fully rebuildable.Last Post by:
posted: 3 years ago
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Engine mounts
This topic has 5 replies, has 2 voices, and was last updated by
3 years ago February 21, 2021 at 3:00 pm I have been looking at my engine/gear mounts. They all appear to be in the same condition, some cracking of rubber and the cross pin shows as laying on the bottom of the hole in the side of the mount housing. The boat is 1999 with twin Cummins 6BTA5.9, <400 hours. No alignment issues known and no vibrations noted. Should I be concerned or is this normal?
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in: General Discussion
5 RepliesFebruary 22, 2021 at 3:53 pm Not rebuildable, never was—————-Out of production for at least 15 yrs.. The SMX Purple 70 fits in the same spotLast Post by:
posted: 3 years ago
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Fuel flow rate monitoring
This topic has 4 replies, has 4 voices, and was last updated by
4 years ago November 7, 2019 at 1:18 pm I am considering installation of Interactio wireless fuel flow calculators and wondering if anyone has experience using them. Any feedback would be great. Interactio.co
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in: Instrumentation & Electronics
4 RepliesFebruary 17, 2020 at 5:22 pm I am just about through with the setup and calibration of a Maretron Fuel Flow system on my 38ft boat with twin Diamond 370’s. That may be something to look into as well. It hooks up to your NMEA 2000 system and data is available on many chartplotters and other connected devices. They have various “sensors” for engines of different flow rate requirements. The system requires two sensors for each engine (supply and Return) an…Last Post by:
posted: 4 years ago
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Reseal fuel line bracket bolts ?
This topic has 1 reply, has 2 voices, and was last updated by
4 years ago December 30, 2019 at 8:32 am I have recently removed the 5 fuel line hold down brackets (6BTA) to allow removal of the Bosch injection pump. I noticed upon removal of the bolts, they appear to have a reddish colored sealant on them. Iām ready to reinstall them but am curious. Do they go into a wet portion of the water jacket or into a blind tapped bore? Iām thinking I will be using RTV (red) on these bolts when I put them back in but not sure if itās necessary. I would like…
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in: Cummins Marine Engines
1 ReplyDecember 30, 2019 at 6:52 pm Clean all—–Use “Rectorseal #5” (or at least a common lithium based wheel bearing grease) for assembly…Dry assembly of anything on a “marine engine” is a no-no in my book. Cummins may even learn that someday as they have shown some signs that way. Using Rectorseal #5 between mating surfaces on a engine in a marine environment pays BIG dividends years later when things need maintenance and you have …Last Post by:
posted: 4 years ago
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Delete combo fuel block and fuel cooler.
