Frozen alternator nut

[classic911]

Alternater crapped out so I'm replacing it. Start by removing the alt. belt. Easy enough right? Wrong! I swear the nut is welded on. Soaked it with WD40, let it sit overnight and the nut ain't coming off.. My hands are sore and knuckles scrapped. Any suggestions?

[stormmaster]

Liquid wrench seems to work better for me.....after spraying...LIGHTLY tap with a mallet or hammer...(NOT ON THE THEADS)....keep repeating until it losens up....not sure i would want to apply flame near Magnesium fan....just my .02....

[Dan in Pasadena]

Everyone's going to respond and tell you to use either PB Blaster or Kroil. I have used PB and it is miraculous.

Wrap a LITTLE bit, almost a few threads of cotton towel around the nut/threads and soak it with PB, let it work overnight. Feel free to go back and add a little every few hours...it'll come off.

By the way, I haven't done this yet, but any chance they are reversed threads?

[rlane]

Normal threads, It is much better with two people. Put a piece of pipe over the pulley wrench to hold it steady and use a long cheater bar on the 22 or 24 mm alternator nut. MUSCLE!

[mede8er]

2nd on the cheater bars.........

[Early_S_Man]

This is one of the few applications on a 911 where an impact wrench works well ... when the transaxle is in 5th gear and emergency brake is tight, pinch the belt tight with Channelock pliers!

ps,

Six-point impact 22 mm or 24 mm socket is mandatory!!!