how do you get the stock pulley off and press on new one???
water pump 
Help ls3 water pump pulley removal
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From: Naples Fl.
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It's not supposed to come off without completely taking the water pump apart. If you need the original inlet location of the LS3 water pump you can remove the old pulley with a 3 jaw puller. I've done it on LS1 water pumps. I had to destroy the old one by cutting slots in the pulley base to get the puller on it, then sliced up the side of it. Truck pulleys come off with just the puller.
To press a new one on you have to remove the back plate and and support the shaft. Otherwise you'll just press the shaft through the impeller.
To press a new one on you have to remove the back plate and and support the shaft. Otherwise you'll just press the shaft through the impeller.
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Verdad Gallardo Thread Starter
9 Second Club
Joined: Dec 2010
Posts: 98
Likes: 0
From: Naples Fl.
PITA water pump pulleys It's not supposed to come off without completely taking the water pump apart. If you need the original inlet location of the LS3 water pump you can remove the old pulley with a 3 jaw puller. I've done it on LS1 water pumps. I had to destroy the old one by cutting slots in the pulley base to get the puller on it, then sliced up the side of it. Truck pulleys come off with just the puller.
To press a new one on you have to remove the back plate and and support the shaft. Otherwise you'll just press the shaft through the impeller.
To press a new one on you have to remove the back plate and and support the shaft. Otherwise you'll just press the shaft through the impeller.
Last edited by Speed Shifter; Dec 4, 2011 at 04:28 PM. Reason: forgot pic
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