Cat D8H Precups

Not all that uncommon to have a chamber separate at the furnace brazed joint. Usual repair involves welding a nut or bolt to the remaining section in order to unscrew the lower half.

Thanks OM. After I get the other half out, could a good welding/machine shop repair the precup, or am I going to have to find another one?

Thanks again.

Get a new one...part # 9M8025 = 2P0483 = 7S5784
 
 

OM did you wait some time before attempting to remove after welding? I was thinking heat expansion from weld then wait to cool/contract may help to remove thread end easier.

Yes, let it cool before removal.

I got a good weld on a bolt, it’s TIGHT. It would be left hand thread would it?

Get a new one...part # 9M8025 = 2P0483 = 7S5784
 
 

Old Magnet, this cat doesn’t have glow plugs. The part number you gave me, is that precup for an engine with glow plugs?

Thanks again so much for your help.

Glow plug pre cups fit the same no problem in using them, I think the older non glow plug pre cups may not be available anymore.

Wombat