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Seized viscous fan nut

Old Sep 21, 2021 | 03:34 PM
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Default Seized viscous fan nut

Does anyone have wisdom on getting the nut loosened? I have the pulley jammed with a pry bar and I’m tapping quite hard on my 36mm wrench. I’ve been soaking it in penetrating oil for a few hours. (P38 GEMS engine)

Difficult to get a good shot.
 
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Old Sep 21, 2021 | 03:38 PM
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See if you can rent an air tool designed just for this. Had to borrow a friends one day and it made quick work of the stubborn nut.
 
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Old Sep 21, 2021 | 03:45 PM
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Oh wow. Thanks for the reply. That’s got to be a pretty specialized tool to fit in there.
 
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Old Sep 21, 2021 | 03:53 PM
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It's a neat attachment that basically uses an air hammer type deal to break it free. That hi-frequency impact action does wonders.
 
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Old Sep 21, 2021 | 04:03 PM
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Standing from the front it goes Counter Clockwise to remove. I've used a beefy 36mm open end and usually hit straight down with a sledge and it will break loose. Or the Snap On tool style where you hold the Waterpump Pulley bolts with one tool, and loosen with the 36MM wrench.
 
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Old Sep 21, 2021 | 04:21 PM
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Thanks. I’ll give those ideas a try
 
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Old Sep 21, 2021 | 05:16 PM
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Got it. Clearly the “special wrench “ has way too much flex. Need a much beefier 36mm wrench, which I’ll have to buy for next time. I used a fairly beefy 12” crescent and a heavy hammer.
 
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Old Sep 21, 2021 | 06:04 PM
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Neverseize on the threads going back, don't even tighten it as the fan load keeps it tight. Freaking ******** that tighten those.
 
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Old Sep 21, 2021 | 06:22 PM
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Good call. I use ant-seize on almost everything
 
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Old Sep 22, 2021 | 08:04 AM
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A question of preference:

Do you use the silver anti-seize or the copper based? A good friend, a LR mechanic from Manchester England, always swore by the copper based product.

Just curious.
 
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