Harmonic Balancer Bolt
Thread Starter
Racer
Joined: Nov 2011
Posts: 411
Likes: 70
From: Grove City Ohio
2023 C1 of the Year Finalist - Modified
Harmonic Balancer Bolt
Ok so I've got the rack out of my 06- A6. Have tried 3 different 1/2" impact guns and the HB Bolt won't budge. Does anyone know if the factory put locktite on them. I'm not not the orignal owner and it doesn't appear that the HB was replaced. There is some telltale orange/red color around the washer.
I have the flexplate holding tool on order, but thought I'd only need it for the install. If I use it for the removal with a big breaker bar and possibly a cheater pipe I'm hoping the bolt won't break.
Anyone with suggestions?
I have the flexplate holding tool on order, but thought I'd only need it for the install. If I use it for the removal with a big breaker bar and possibly a cheater pipe I'm hoping the bolt won't break.
Anyone with suggestions?
Burning Brakes
Joined: Aug 2014
Posts: 1,240
Likes: 258
From: Tampa FL
Flywheel lock and a 4' cheater bar on that bolt, ought be enough! You are aware they torqued at 240 # ft ?
https://www.ebay.com/sch/i.html?_fro...+tool&_sacat=0
https://www.ebay.com/sch/i.html?_fro...+tool&_sacat=0
Last edited by HK770; Oct 16, 2017 at 04:03 AM.
Burning Brakes
Joined: Jul 2014
Posts: 897
Likes: 65
From: Ohio
Flywheel lock and a 4' cheater bar on that bolt, ought be enough! You are aware they torqued at 240 # ft ?
https://www.ebay.com/sch/i.html?_fro...+tool&_sacat=0
https://www.ebay.com/sch/i.html?_fro...+tool&_sacat=0
Le Mans Master
Joined: May 2016
Posts: 7,148
Likes: 1,546
From: Florida
I use a 3/4" drive breaker bar which is about 22" long already, with a 2' extension. The factory bolt is actually tighter than 240#s. 240 is the torque spec for an aftermarket bolt which is case hardened so it cannot be torqued to yield as the soft crankshaft would yield and pull the threads out way sooner than a case hardened bolt will yield.
The factory bolt is soft, no case hardening, so the factory torque/yield spec of 140* puts far more torque than 240#s.
You need a BIG breaker bar. And, yes, the factory bolt does have loctite applied.
The factory bolt is soft, no case hardening, so the factory torque/yield spec of 140* puts far more torque than 240#s.
You need a BIG breaker bar. And, yes, the factory bolt does have loctite applied.
Last edited by BlindSpot; Oct 16, 2017 at 08:33 AM.
Thread Starter
Racer
Joined: Nov 2011
Posts: 411
Likes: 70
From: Grove City Ohio
2023 C1 of the Year Finalist - Modified
Thread Starter
Racer
Joined: Nov 2011
Posts: 411
Likes: 70
From: Grove City Ohio
2023 C1 of the Year Finalist - Modified
Flywheel lock and a 4' cheater bar on that bolt, ought be enough! You are aware they torqued at 240 # ft ?
https://www.ebay.com/sch/i.html?_fro...+tool&_sacat=0
https://www.ebay.com/sch/i.html?_fro...+tool&_sacat=0
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Thread Starter
Racer
Joined: Nov 2011
Posts: 411
Likes: 70
From: Grove City Ohio
2023 C1 of the Year Finalist - Modified
I use a 3/4" drive breaker bar which is about 22" long already, with a 2' extension. The factory bolt is actually tighter than 240#s. 240 is the torque spec for an aftermarket bolt which is case hardened so it cannot be torqued to yield as the soft crankshaft would yield and pull the threads out way sooner than a case hardened bolt will yield.
The factory bolt is soft, no case hardening, so the factory torque/yield spec of 140* puts far more torque than 240#s.
You need a BIG breaker bar. And, yes, the factory bolt does have loctite applied.
The factory bolt is soft, no case hardening, so the factory torque/yield spec of 140* puts far more torque than 240#s.
You need a BIG breaker bar. And, yes, the factory bolt does have loctite applied.
Le Mans Master
Joined: May 2016
Posts: 7,148
Likes: 1,546
From: Florida
Yes, you definitely must lock the flywheel down. It'll go with a solid breaker bar and extension. I use a 2' piece of 1" black pipe on my 22" breaker bar. It is going "snap" so make sure your knuckles have some clearance and not pointed at any sharp objects. I use a pair of leather gloves to get past the snap.
Safety Car
Joined: Jan 2011
Posts: 4,959
Likes: 526
You really need a minimum of about 600 pd. gun. And then it's still not gonna break the bolt loose like it would a lug nut. In other words it won't give about 6-7 hammer blows and then fly off. It could take a few seconds for the bolt to turn enough to loosen completely. When taking out the big bolts I usually mark them so I can keep an eye on them to be sure they are turning. A 20 ft. breaker bar will of course work as most suggest, but I sure wouldn't want to mess with that if i could get my hands on a 600 pd. or stronger gun......good luck.
Drifting
Joined: Sep 2014
Posts: 1,924
Likes: 392
From: Atlanta - - - - - Save the manuals
Flywheel lock and a 4' cheater bar on that bolt, ought be enough! You are aware they torqued at 240 # ft ?
https://www.ebay.com/sch/i.html?_fro...+tool&_sacat=0
https://www.ebay.com/sch/i.html?_fro...+tool&_sacat=0