How to get interior and exterior pulleys off to change?

Keep it on topic, it will make it easier to find what you need.
Post Reply
NickSpider

How to get interior and exterior pulleys off to change?

Post by NickSpider »

Ok I read on another link that you needed either a 38 mm or 1.5 inch socket, went all around town and ended up finding a 21pc set that goes all the way to 48 mm. I can't get the bolt to budge, how does everyone else get these pulleys off? I am 6'6 and put quite a bit of weight on it and it rocks the car, but will not budge, is there a secret to it?

Also the alternator seems to be in good condition, but the pulley on the alternator is rusted pretty bad, where can I buy just the pulley part of the alternator?

thanks guys for the help.
mdrburchette
Posts: 5754
Joined: Wed Jan 25, 2006 5:49 am
Your car is a: 1972 Fiat 124 Sport
Location: Winston-Salem, NC

Re: How to get interior and exterior pulleys off to change?

Post by mdrburchette »

You may have to use an impact wrench on the crank pulley.
1972 124 Spider (Don)
1971 124 Spider (Juan)
1986 Bertone X19 (Blue)
1978 124 Spider Lemons racer
1974 X19 SCCA racer (Paul)
2012 500 Prima Edizione #19 (Mini Rossa)
Ever changing count of parts cars....It's a disease!
NickSpider

Re: How to get interior and exterior pulleys off to change?

Post by NickSpider »

mdrburchette wrote:You may have to use an impact wrench on the crank pulley.
what if you dont have an impact wrench?
User avatar
manoa matt
Posts: 3442
Joined: Thu Oct 26, 2006 4:28 pm
Your car is a: 1978 Fiat 124 Spider 1800
Location: Honolulu, Hawaii

Re: How to get interior and exterior pulleys off to change?

Post by manoa matt »

Do you have the radiatior out, and the front grill? You can rent an electric impact wrench capable of 250 foot pounds for about 4-6 hours for around $12. You will need some long extensions and possibly a good strong universal joint attachment.

Are you locking the flywheel or just putting it in gear? If you are trying to break that nut loose with the car in gear then you are trying to turn over the engine backwards which is not recommended. You need to lock the flywheel. Remove the trans inspection plate and clamp a piece of angle iron along the block. Place an edge of the angle iron between the teeth. Righty tighty, lefty loosey.

A socket and cheater bar may sound like a good cheap idea; but if the nut unexpectedly breaks loose you could get hurt or damage the car, like dent the fender.
User avatar
manoa matt
Posts: 3442
Joined: Thu Oct 26, 2006 4:28 pm
Your car is a: 1978 Fiat 124 Spider 1800
Location: Honolulu, Hawaii

Re: How to get interior and exterior pulleys off to change?

Post by manoa matt »

Almost forgot. When you put that nut back on don't use the impact wrench, use a torque wrench. For 71-72 cars its 87ft.lb For 73 on cars its 181ft.lb.

by the way what is the interior pully?
NickSpider

Re: How to get interior and exterior pulleys off to change?

Post by NickSpider »

manoa matt wrote:Almost forgot. When you put that nut back on don't use the impact wrench, use a torque wrench. For 71-72 cars its 87ft.lb For 73 on cars its 181ft.lb.

by the way what is the interior pully?
directly behind the outer crankshaft pulley is a small inner pulley, its pretty rusted along with the larger exterior one.

I already bought the socket and cheater bar set, and yes I almost did hurt myself, thats when i stopped to ask advice.
trippbannister

Re: How to get interior and exterior pulleys off to change?

Post by trippbannister »

well i've never tried this on a fiat, but it's worked for me on other cars. it may not be the smartest way to go about it though...

put your socket on the crank nut, the put a big breaker bar on the socket, and position the breaker bar so that it's against something solid. like the frame, or the ground.

then blip the starter over with the key from the safety of the drivers seat.

good luck.
Post Reply