Can't remove Delta "bonnet" to replace cartridge!

[mshantea]

Thanks to all on this thread. I tried the vinegar. No joy. Also too much pressure when using both channel locks and pipe wrench. I actually moved the actual plumbing in the wall a bit. Heat was the trick. Used a Ryobi heat gun. I went ahead and replaced the bonnet with a new one. Why not while in there. $6.

Did it by myself. No need for anyone else.

 

[Chris2300]

I used a strap wrench and I thought the bonnet nut was coming off but I realized that I had slightly turned the whole body. I turned the water back on and don't see any leaks. Am I in the clear since there are no leaks or did I do any damage by turning the whole body while trying to get the bonnet nut off? Thanks.

 

[Sponsor]

 

[Sameer]

I started fixing my leaky faucet and I bought a replacement cartridge, my problem is I cannot get the nut back on once cartridge is there. If I do not put the cartridge the nut can tighten but if I put the cartridge the nut just does not see to be getting into the groove to be tightened. I have tried using the old cartridge as well as using some force while tightening.

 

[Terry]

I started fixing my leaky faucet and I bought a replacement cartridge, my problem is I cannot get the nut back on once cartridge is there. If I do not put the cartridge the nut can tighten but if I put the cartridge the nut just does not see to be getting into the groove to be tightened. I have tried using the old cartridge as well as using some force while tightening.

I would take a good look with the cartridge out. It may be there the old springs and washers are still in the body of the valve.

 

[Hector Solis]

I could not remove the bonnet, even with an 18" pipe wrench. I tried the hot water and vinegar trick. Wrapped a soaked rag and left it for about 4 hours. After that, the bonnet came off rather easily using channel pliers. I did not expect the vinegar to work since others on this thread had no luck.

 

[Daluu]

I am not sure what you are talking about, but I hope you are NOT turning the water on without the bonnet nut in place.

is that likely going to eject/shoot the cartridge out of the valve? and water spattering out

 

[Daluu]

Try to get a wrench on the body of that valve, another on the bonnet nut.
If the body twists, you'll be spending close to $600 to fix it.

What do you mean body twists? A part of the valve cracks or breaks off? Or the valve connections to the plumbing pipes leak or break?