Turbo oil return hose

[ccf460]

The turbo has a metal pipe heading towards the oil pan, with a short section of rubber hose connecting it to a nipple just above the oil pan. Mine is leaking ,is there anything special about the hose? Can I just put a temperature rated rubber hose from an automotive application, or do I need to find an exact replacement? How hot does the oil get coming from the turbo?

 

[gimpyrobb]

The turbo itself can get as hot as the EGTs. I think a regular oil rated hose should be fine. To make it easy on yourself, loosen the hose clamps and then un-bolt the metal tube from the turbo. It will slide out much easier that way.

 

[joshs1ofakindxj]

I had to replace my turbo drain hose. It is a 1" ID silicone hose rated for high temp oil. A hose rated for coolant won't last long there. I found a common 4" long Cummins replacement that just barely is long enough to work: Cummins #3818267 - Cost about $20 at a big truck repair shop and they had them in stock. It has been working fine with no leaks all spring and summer.

Also the exhaust gasket manifold to turbo gasket and the 2 turbo oil line gaskets were available at the local CAT dealer if you need them:

1S-4295 Exhaust Manifold to Turbo Gasket $6.99
1S-4810 Turbo Oil Drain Gasket $0.89
1S-6595 Turbo Oil Feed Gasket $0.80

If you follow Gimp's advice (I would) and remove the hard steel drain line from the turbo then I would scrape clean the mating surfaces and use a new gasket listed above.

 

[lavarok]

I thought I read somewhere that silicone was a no-no here.

When I replaced mine, I went over to the local Ringpower and bought a section of bulk hose. The part number of the hose is "371-8094" and I paid .37 per CM.

I found the original hose specs listed online by doing a search for the NSN. I sent this over to Ringower first to identify a suitable replacement.

 

[ccf460]

I ended up going to a hydraulic hose shop, and paid $5.00 for 5 inches. The hose looks like overkill, should match the truck well.