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View Full Version : How to tighten pulley nut



1batt4u
11-23-2012, 09:23 PM
I bought a billet aluminum pulley. It came with a lock washer.

When installing pulley, does the lock washer go under the pulley, or under the nut? Any washers in between?

Finally, how to tighten nut? And how would I know if it is tight enough, proper torque?

1batt4u
11-24-2012, 11:09 AM
bump

refugeefromcalif
11-24-2012, 12:12 PM
In my experience, a lock washer Always goes under the nut, (When using one).

George

DMC5180
11-24-2012, 08:39 PM
NUT > LOCK WASHER> FLAT WASHER > PULLEY. This would be considered a normal hardware stack up.

DMCMW Dave
11-25-2012, 12:18 AM
NUT > LOCK WASHER> FLAT WASHER > PULLEY. This would be considered a normal hardware stack up.

I've never heard of a lockwasher on a crankshaft nut. But then I've never used an aluminum pulley there either. What does the vendor say?

DMC5180
11-25-2012, 08:21 AM
I've never heard of a lockwasher on a crankshaft nut. But then I've never used an aluminum pulley there either. What does the vendor say?

Agreed, He did not specify what the pulley application was.

DMCMW Dave
11-25-2012, 09:14 AM
Agreed, He did not specify what the pulley application was.

I was kind of guessing, as the A/C pulleys are not held on with nuts, the water pump pulley is a press-on, I've never seen anyone sell an alternator pulley, and there was some guy on here a while ago selling aluminum crankshaft pulleys (not a regular vendor but someone who just seems to sell pulleys).

1batt4u
11-25-2012, 11:56 PM
Sorry guys, it is for the alternator!

The stock pulley, from John Hervey, It was Nut, pulley, lockwasher, fan, and washer on bottom.

Ron
11-26-2012, 09:11 AM
It was Nut, pulley, lockwasher, fan, and washer on bottom.

Hmmmm...I have rebuilt thousands of alternators (literally) and I have never see one assembled like that.

Should be: Fan offset spacer, fan, pulley, maybe a flat washer, usually a lock washer, then nut.


15058

DMC5180
11-26-2012, 10:52 AM
+1

1batt4u
11-26-2012, 11:06 AM
Thank you guys!!

This is the pulley I bought. http://www.summitracing.com/parts/mch-135/media/images

LEVY
11-26-2012, 11:11 AM
+1

Lock washer should make contact with the nut, unless used as spacer, in this case follow manufacturer's instructions.

LEVY

1batt4u
11-26-2012, 05:54 PM
Lock washer should make contact with the nut, unless used as spacer, in this case follow manufacturer's instructions.

LEVY

They didn't include any instructions. Thanks for all the info!!