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| | | | Joined: Nov 2008 Posts: 261 'Bolter | | 'Bolter Joined: Nov 2008 Posts: 261 | Hi All,
So, I took apart my alternator to paint it. While putting it back together I realized the pulley shaft thread got messed up a bit. I ran a file over it and now the nut goes on good. The problem is now when I tighten the pulley nut down, the fan get locked down onto the casting and it will not rotate because it is tight up against the casting. If I leave it loose, the pulley spins without turning the fan. What did I do wrong? Did I resess the bearing on the front halve to far in?
thanks,
skipper | | | | | Joined: Jul 2013 Posts: 863 Shop Shark | | Shop Shark Joined: Jul 2013 Posts: 863 | Skipper,
It's been a few years since I had a alternator apart. If I remember correctly, there is a spacer between the front case of the alternator and the fan assembly. This spacer will give you the needed clearance.
Tim
"Pay attention to the details! It ALWAYS pays off."
1949 Chevrolet 3100 Series 1/2 ton Pickup
1964 Chevrolet C10 (Ol' Yella) (SOLD)
1958 Chevrolet Biscayne 2 door (SOLD)
1970 VW Beetle
| | | | | Joined: Jan 2013 Posts: 1,384 Shop Shark | | Shop Shark Joined: Jan 2013 Posts: 1,384 | Tim is correct. On most models, you put the front cover over the shaft, slide on the spacer, put in the key and slide on the fan and pulley. look around for the spacer. | | | | | Joined: Feb 2004 Posts: 29,746 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,746 | Yep-- - -you lost the spacer. It's a ring about 3/16" thick that fits between the fan and the bearing. I use a 1/2" drive impact wrench to tighten the pulley nut- - - -it needs to be TIGHT! Wrap a belt around the pulley sheave to hang onto while you hammer the nut down with the impact.
Edit: Alternators don't have a key- - - -the friction fit does all the driving.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Mar 2010 Posts: 10,270 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,270 | Start your search for the missing spacer in the last place you would ever think of looking. They are always there...
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Nov 2008 Posts: 261 'Bolter | | 'Bolter Joined: Nov 2008 Posts: 261 | Hey Guys, found that missing spacer and now all is good. Thanks! | | |
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