DOC/DPF removal trick question

[kevinah]

I have removed all bolts all sensors and clips and hangers. I cannot figure out how to separate the rear end section that goes to the muffler. It is not wanting to move at all. I thought of removing the cross frame directly below the down pipe but I thought that looked like a lot of additional work that might not solve the issue. How do I separate the tail end section of the DPF? Oh, and yes the bracket is loose and able to move away from that section.

Thanks in advance for any info.

Kevin

[DSTRBD]

If you are talking about the rear section of the DPF pipe that slides into the exhaust tail section, it can be seized up pretty good sometimes. It will come out though. Smack the connection a few times and get medieval on it, she will come loose.

[kevinah]

Thank you.

I drank a rockstar and got to the back of it, held onto the muffler with both hands and kicked the crap out of it on the rear side of the DPF about 25 times. Once it started it kept going. It's down on the ground now.

[nso123]

I was going to suggest the foot trick too. I had done the DPF delete before, but just did the DOC delete today. Worlds of difference.

[Sawed Off]

Yeah, I remember mine being a pain in the butt also. Just have to get a little western on it to seperate the two

[pyro2nite]

Leave the front part attached to the down pipe. Wrap a ratchet strap around the pipe in front of the muffler. Attach the other end to your axle. Tighten, then ratchet till the pipe pulls apart. Might try to apply some PB blaster first.

[kevinah]

I did soak it the night before and yesterday morning. I was definitely loosened up. The problem for me was that I was trying not to brake it. After I wrestled it and took charge, it came right off. I'm deleted and new piped and tuned. I have to go drive today to see some results. The little driving I did yesterday was very different than what it was.

Thanks for the info

[staffcurtis]

This is hands down the best way to do it. I didn't need to jack up my truck either. First, DO NOT remove the two bolts from the downpipe to the cat. This made it take much longer than necessary. Unbolt the clamp between the DPF and the muffler. While laying on your back with your feet facing the rear of the truck, kick push the muffler with both feet. It will come right off. Then unbolt the rest. I did a DPF/CAT delete, so the rest was smooth sailing. Would have saved me 2 hours labor if I had known this first.

[kevinah]

Originally Posted by staffcurtis

This is hands down the best way to do it. I didn't need to jack up my truck either. First, DO NOT remove the two bolts from the downpipe to the cat. This made it take much longer than necessary. Unbolt the clamp between the DPF and the muffler. While laying on your back with your feet facing the rear of the truck, kick push the muffler with both feet. It will come right off. Then unbolt the rest. I did a DPF/CAT delete, so the rest was smooth sailing. Would have saved me 2 hours labor if I had known this first.

Looking back to just yesterday, this would have saved me the same amount of time and consequent frustration. I can see exactly how that would have worked out better. Other than this part it really wasn't too bad-in terms of would I do it again or not. In this case I would. Maybe tomorrow or the next day though.

[brendanlush]

Originally Posted by nso123

I was going to suggest the foot trick too. I had done the DPF delete before, but just did the DOC delete today. Worlds of difference.

It worked for me, just make sure your fragile parts are out of the way.