Turbo banjo fitting leaks on 6CTA

[ZZ13]

I have a slow leak on turbo coolant banjo fitting. Tried tightening a bit. According to sbmar this is fairly common and they give detailed instructions on sealing it back up. Before I do this, I am looking to see if any of you here have done it.

 

[480ces]

I was going to point you to Tony's how to...I'd say that's your answer.

 

[ZZ13]

I was going to point you to Tony's how to...I'd say that's your answer.

Thanks. It does look fairly straight forward. I would prefer to get two new copper gaskets rather than doing the annealing thing. I hope I can just take one to the hardware store and match it up.

I just drained all the coolant to pull and clean the heat exchangers and totally forgot about doing this repair. Silly me. Now I get to drain the coolant again. Fortunately I have a nice clean 7 gallon bucket I use for that.

 

[my3sons]

Bill, Searay chuck just replaced the banjo fittings on his 6C's turbos. He's my dock neighbor, doesn't post too much here, but if he were to respond to this thread, he would tell you to just buy the copper gaskets and REPLACE them. He made a few attempts to repair the leakers without any luck. Finally bought new ones, no leaks.

 

[ZZ13]

Thanks Mark. If he has any other pointers let me know.

 

[Searay Chuck]

Like Mark said I to had the same problem and believe me it is best to either order 2 new gaskets or go to
your local cummins dealer and get them. Another useful tip I use is when changing out your impellers I found that
cutting the end off of a campbells soup can and turning the impeller into that now allows you to easily insert it into the pump
housing. this allows you to turn it to line up the shaft key and when done simply hold the impeller in while pulling the can out.
be careful as the end you cut off is very sharp and you don't want to cut yourself!

 

[ZZ13]

I finally got around to this. Is there anything special about these copper washers? My nearest Cummins dealer is an hour away. I was going to go to auto parts stores and see if I can get a match. Incidentally, I drained 7 gallons of coolant to make sure it was below this fitting. I connected a drain hose to one of the coolant filter hose fittings and filled up a 7 gallon bucket I have.

 

[Henry Boyd]

The copper washers are crushable and considered a one time use item, like a gasket. Sometimes you can break the banjo connection and reuse the washer, but they will eventually leak. Once they start leaking there is no fixing them.

I've worked with them only on fuel systems, so I always kept a supply in my tool box and just tossed the used ones.

I'd suggest contacting your dealer and buying a supply. You can try and find them at an auto parts store, but it's a long shot.

Henry


Sent from my iPad using Tapatalk HD

 

[ZZ13]

The copper washers are crushable and considered a one time use item, like a gasket. Sometimes you can break the banjo connection and reuse the washer, but they will eventually leak. Once they start leaking there is no fixing them.

I've worked with them only on fuel systems, so I always kept a supply in my tool box and just tossed the used ones.

I'd suggest contacting your dealer and buying a supply. You can try and find them at an auto parts store, but it's a long shot.

Henry


Sent from my iPad using Tapatalk HD

Thanks, Henry. I verified the no-reuse of the washer philosophy - ha! I tried heating them to restore their softness but it didn't work - I still got a very very slow leak at ambient pressure. After a few days it stopped leaking - but I didn't trust it. So, I drained the coolant yet again and put new washers with Rectorseal Tru-Blu and tightened it all up. I am waiting a day to add the coolant so the sealant can cure.

 

[Bt Doctur]

get some #600 wet/dry sand paper and a square piece of glass,(womans compact mirror, etc)
glue the sandpaper to the glass and hone the housing to make sure its flat, hone both sides of the fitting also. Reinstall with Permatex aviation sealant.

 

[Jaybeaux]

I realize that this is an old thread, but I thought I'd give it a try. I found my banjo fitting on the Port Turbo leaking coolant. A small leak, and it has taken me a while to nail it down.

As a first attempt to mitigate the leak, can I just "tighten" the banjo fitting? Or will that create more problems than it will solve? I'm going after the T-Stats next month, so I will have a perfect opportunity to fix it. Can anyone supply a source for the copper washers?

Thanks,

Jaybeaux

 

[ZZ13]

I realize that this is an old thread, but I thought I'd give it a try. I found my banjo fitting on the Port Turbo leaking coolant. A small leak, and it has taken me a while to nail it down.

As a first attempt to mitigate the leak, can I just "tighten" the banjo fitting? Or will that create more problems than it will solve? I'm going after the T-Stats next month, so I will have a perfect opportunity to fix it. Can anyone supply a source for the copper washers?

Thanks,

Jaybeaux

I bought mine directly form a Cummins dealer. Pretty cheap. I think I bought 6 to have enough for future use. I tightened the banjo until it was good an snug and then give it one last for push for a final crush of the washer. Hasn't leaked since. I did use the Rector Blu sealant.

 

[Jaybeaux]

Thanks Bill. I stopped at local Cummins dealer on the way home this morning. I bought 4 at ~$7 each. Future leak! Thanks again for your assistance.