real time help...exhaust related

[CodyLX450]

............................

[DieselFeverDisease]

It's metric for sure, and I'm pretty sure it's 15mm.....but not certain. Ratchet straps will help in pulling the pieces apart. They can be a real pain sometimes even after the bolts are all off. Heat helps too, but not many people have access to torches

[drunk on diesel]

first bolts before the cat?

step one is the exhaust band clamp at the tail of the DPF. soak with PB blaster all around and loosen that up. I believe it's a 15mm. Sometimes you have to use a breaker bar to get it started. Then take a BFH and hammer on the muffler hanger on the back of the muffler and you can slide even the toughest pipe off the back of the DPF.

don't touch the downpipe bolts or hanger bolts or you'll never get that pipe slid off if it's stuck real good!

THEN, once you have that slid off and pushed up, unbolt the two downpipe to cat bolts. They're 13mm head, and you'll need a wobble and an extension for the top one. The nuts are welded to the flange, so no need to put anything on them.

THEN, unbolt the three hangers from the frame rail. they are 13mm head nuts.

Obviously unplug all the sensors, and the cat/dpf will slide out as one assembly.

This is the absolute fastest/easiest way to get that stuff out from under there every time.

[CodyLX450]

Thank you! I tried to source a DIY since Im a little pressed for time to get the parts swapped and tuner installed. That should work out great.

[smotrs]

Interesting, mine had 13mm on the collar before the the CAT and 14mm on the ubolt after the DPF.

You'll also need 13mm for the hangar nuts if you remove the brackets. Then you will need a couple of line wrenches, 15mm and 13mm if I recall correctly for the 4 sensors assuming you need to transfer them. Otherwise just leave them in the stock pipe.

EDIT: Never mind, looks like DD got it.