Got this 4045HF270 in the shop with an adapter off the turbo outlet that fits inside the female part of this upturned elbow. It leaks a lot of exhaust out the joint. I think there might be some kind of a piston ring type deal in here. I am wondering what parts go bad on these and how to likely repair. I can't take it apart just yet because we still need it running for other problems but would like to know what to expect in here. What parts go bad in a setup like this. The v-band clamps seem to be holding fine. This fitting is more like what you would see on a long exhaust manifold, but a lot bigger.
Double check model number. I dont see HF270 in my sources.
Right you are 4045TF270
HF275.
No seal ring. It is a "rolled" end to the tube that fits into the elbow. A flange with no gasket at the turbo. Probably a rotted out tube. Serial number? Edit: I just saw your other post. PE4045T623558 When looking up parts by serial number the option code for that exhaust is 6401.
just had that problem on our trencher same motor. I ended up replacing the short pipe and the elbow
Had decent luck with cleaning parts and if not too rotten using some of the copper coat gasket paste to seal leaky exhaust sections.
Cat recommens the 2P2333 high temperature sealer on exhaust connections that are essentially slip fit, like the 3116 3 piece exhaust manifold.
Even on new ones sometimes the casting job is so **** poor you have to goop em anyway lol
I use JD's Power Assist app on my phone & tablet. Enter the engine serial number and the factory build options are at your finger tips with all of the part numbers you need. Makes life easier, for sure.
I got the parts in and the new item #2 is a looser fit in the item #3 than the original leaker was. I have JD starting a "case" now but we will see if they even care. What kind of goop do you recommend? I once used some white ceramic paste that came in a toothpaste tube and hardened into ceramic.
Permatex has 80335, a 2000 degree goop, loctite has MR2000 too. Loctite is what cat sells as their sealer usually.