Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

Can't get the alternator pulley off???

Thread Tools
 
Search this Thread
 
Old Aug 30, 2006 | 06:39 PM
  #1  
Hugger's Avatar
Thread Starter
10 Second Club
iTrader: (21)
 
Joined: Nov 2001
Posts: 728
Likes: 1
From: Olive Branch MS/Memphis
Default Can't get the alternator pulley off???

Does anyone have any tips to get the alternator pulley off? I was using a Torx 50 to keep the pulley from turning and a deep offset wrench on the nut itself. I pulled on the wrench so hard that it broke the torx bit in half.

The nut never budged. I was told that it is reverse threaded. Is this correct? Now I have to remove the other half of the Torx bit from the front of the alternator.
Reply
Old Aug 30, 2006 | 06:40 PM
  #2  
Black Plague's Avatar
TECH Regular
iTrader: (13)
 
Joined: Feb 2003
Posts: 423
Likes: 0
From: Cresson ,Texas
Default

Use a air impact gun!
Reply
Old Aug 30, 2006 | 06:55 PM
  #3  
Hugger's Avatar
Thread Starter
10 Second Club
iTrader: (21)
 
Joined: Nov 2001
Posts: 728
Likes: 1
From: Olive Branch MS/Memphis
Default

That crossed my mind but how do you keep the pulley from turning when you put the impact on it? I thought about chucking it in a vise but that would most likely ruin the pulley.
Reply
Old Aug 30, 2006 | 07:06 PM
  #4  
WhiteRhino's Avatar
TECH Fanatic
iTrader: (6)
 
Joined: Nov 2001
Posts: 1,224
Likes: 0
From: NV
Default

It's standard thread, not reversed. I used an impact on mine. I tapped the trigger a couple of times and it zipped right off. I ordered an overdrive pulley and have a 160 amp altenator. So I practiced on my og altenator to see how it came off. It did come off easy with the impact. I'm going to try the wrench/torx bit method when the pulley comes in. If I can't get it, I'll pull it to use the impact.
Reply
Old Aug 30, 2006 | 07:42 PM
  #5  
ShevrolayZ28's Avatar
TECH Addict
iTrader: (4)
 
Joined: May 2005
Posts: 2,318
Likes: 1
From: Massachusetts
Default

On most alternators there is a little access port where you can stick something in, like an alan wrench, to jam the rotor. Check it out in the shop manual.
Reply
Old Aug 30, 2006 | 08:15 PM
  #6  
WhiteRhino's Avatar
TECH Fanatic
iTrader: (6)
 
Joined: Nov 2001
Posts: 1,224
Likes: 0
From: NV
Default

Originally Posted by ShevrolayZ28
On most alternators there is a little access port where you can stick something in, like an alan wrench, to jam the rotor. Check it out in the shop manual.
I just went out and checked my stock altenator. I couldn't find any access point. I think that's why they put a torx bit in the end of the pulley shaft. I don't want to pull the altenator to pull the pulley if I don't have to. I'm going to try to hold the altenator nut and spin the shaft clockwise to break it free. Hugger said he already broke his torx bit. I hope it doesn't happen to me. I have a set of hardened torx bits for impact use. I'm going to try those first.
Reply
Old Aug 30, 2006 | 08:35 PM
  #7  
Hugger's Avatar
Thread Starter
10 Second Club
iTrader: (21)
 
Joined: Nov 2001
Posts: 728
Likes: 1
From: Olive Branch MS/Memphis
Default

Well, judging from your post White Rhino, the only reason I broke my Torx bit is that I was trying to turn the nut the wrong way thinking it was reverse-threaded. I guess now mine is EXTRA tight. Looks like I have my work cut out for me!!
Reply




All times are GMT -5. The time now is 12:24 PM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE