2002 350HP 3126 question

I was familiarizing myself with the ER today and I noticed a very small amount of oil on the oil return line that goes from the compressor side of the turbo to the block. The starboard motors interior fastener was finger tight and the outboard (closest to the center line) was a little loose as well. The port side only had one bolt in! The other one was laying in the bilge.

Of course I put that bolt back in, but it is impossible to get a socket or spanner on. It is a 14MM fastener, and my local CAT dealer said about 250lb-in of torque. I'm going to try a crows foot wrench to tighten it up, any advice to get to that bolt?

There must be next to no pressure on that line for it to not be spewing everywhere with one bolt in?
 
Strecker25 said:
I was familiarizing myself with the ER today and I noticed a very small amount of oil on the oil return line that goes from the compressor side of the turbo to the block. The starboard motors interior fastener was finger tight and the outboard (closest to the center line) was a little loose as well. The port side only had one bolt in! The other one was laying in the bilge.

Of course I put that bolt back in, but it is impossible to get a socket or spanner on. It is a 14MM fastener, and my local CAT dealer said about 250lb-in of torque. I'm going to try a crows foot wrench to tighten it up, any advice to get to that bolt?

There must be next to no pressure on that line for it to not be spewing everywhere with one bolt in?
Click to expand...
 
That bolt is an absolute pain. I’ve removed and installed my aftercooler three times to tighten, replace the seal, torque it and have purchased special ratchets, sockets and wrenches just for that darn bolt. I replaced my starboard side turbo 3 weeks ago and I still see about 1/4 of a teaspoon of oil after a day cruise coming from it. It’s a drain line off the turbo into the engine so there isn’t much pressure. I keep trying to convince myself to watch it but don’t worry as it is negligible, but just knowing it’s there will likely lead to a fourth trip in to try and stop it
 
DavidBukstel said:
On a positive note, I can now pull the starboard aftercooler, hidden bolts and all, in under 30 minutes.
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lol! Practice makes perfect. I managed to get a crows foot, extension, angled adapter, to ratchet on the bolt. My starboard side is now dry but the port leaks about 1 drop per 3 hours of runtime. I’m taking the aftercoolers off this winter so I’ll probably replace the gasket then. We’re you able to replace the turbo drain gasket without removing the turbo?
 
Strecker25 said:
lol! Practice makes perfect. I managed to get a crows foot, extension, angled adapter, to ratchet on the bolt. My starboard side is now dry but the port leaks about 1 drop per 3 hours of runtime. I’m taking the aftercoolers off this winter so I’ll probably replace the gasket then. We’re you able to replace the turbo drain gasket without removing the turbo?
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Yes but you have to loosen the turbo housing bolts, about 5 of thm
 
DavidBukstel said:
Yes but you have to loosen the turbo housing bolts, about 5 of thm
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got it. Thanks

Curious, did you buy the service manual for all this stuff? I’m debating it , but it’s not cheap. My local Milton cat is really good about screenshotting and sending me info as needed but I don’t want to abuse it
 
No. My local Cat dealer and RPM Diesel here in Ft Lauderdale explained the process. I took my Turbos to RPM for their rebuilding and they were really helpful. When I picked them up they showed me which bolts to loosen and where the supply and drain gaskets go..they’re different. I’ve rebuilt gas engines before. My mechanic is 75 so he’s happy to have me do all the work. I only pay him when I need his knowledge.. his words lol
 
DavidBukstel said:
No. My local Cat dealer and RPM Diesel here in Ft Lauderdale explained the process. I took my Turbos to RPM for their rebuilding and they were really helpful. When I picked them up they showed me which bolts to loosen and where the supply and drain gaskets go..they’re different. I’ve rebuilt gas engines before. My mechanic is 75 so he’s happy to have me do all the work. I only pay him when I need his knowledge.. his words lol
Click to expand...

lol I hear you, I'm in the same situation. Lots of gasser experience in cars and boats but diesels are new to me. Honestly, they're surprisingly simple machines once I went down there and spent some time to really trace hoses and such. I know everyone says it but for the most part it seems like clean air, oil, and fuel will keep them happy.
 
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