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Harmonic balancer bolt

Blackwidow_Chevy

By Blackwidow_Chevy
in Engines & Drivetrain

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Blackwidow_Chevy Enthusiast

Blackwidow_Chevy

Posted
Posted

A bit new to this hands on in this section but had some questions just to make  sure. If facing the truck that bolt should be removed to the left ? And also the truck is 17 Silverado so why is it not budging off I’ve tried dewalt impact gun, 1/2 drive 20 inch long breaker bar 24mm socket. Also I have access the flywheel area and also have it locked to stop it from turning anybody got why or a better way ?

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

They are torqued to like 200+ foot lbs with some sort of factory lock-tite on there.

 

Put a jack handle on your breaker bar or get a stronger impact gun. You can also heat the bolt up with a propane torch for a few minutes as well, just make sure to only heat the bolt and nothing else.

  • Like 1
CamGTP Senior Enthusiast

CamGTP

Posted
Posted

There is a rubber seal on the front timing cover. It's just fine if you heat up the head of the bolt.

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Blackwidow_Chevy Enthusiast

Blackwidow_Chevy

Posted
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Posted

600 lb impact wrench ( Failed ) 1000 lb impact wrench ( Failed ) next attempting 1500 lb impact wrench gun tomorrow - breaker bar with 3 ft pipe ( Failed ) someone told me about a heavy duty crank sockets so am throwing that in the mix with the 1500 lb impact wrench gun tomorrow today was a failure of try’s. We’ll see if 1500lbs can remove that bolt with that dam loctite!

16LT4 Enthusiast

16LT4

Posted
Posted (edited)

Battery, chorded, or pneumatic impact?  If the latter, make sure there's enough air in the tank.  I have a 1300 ft-lb pneumatic Kobalt, and it has never met a fastener it couldn't remove; driveaxle bolts on a Jetta are over 300 ft-lbs AND glued with red loctite.  I tried jacking up the end of a breaker bar to use vehicle weight as the force to remove a Jetta axle bolt, but the bar bowed and lifted the wheel off the ground before snapping the breaker's trunnion (pretty incredible to see the jack lifting 800 lbs from 18" away).  With 150 psi in the tank, the impact zipped the bolts out like they weren't even torqued.  The gland nut on an ACVW engine is torqued to 253 ft-lbs, and my impact lights those off instantly as well.

 

You could try a torque multiplier, something like this, if you need:

 

https://www.northerntool.com/shop/tools/product_200732635_200732635

 

https://www.toolplanet.com/product/Neiko-Pro-Torque-Wrench-Multiplier/torque-wrench

 

Your FLAPS may have a loaner/rental.

Edited by 16LT4
Blackwidow_Chevy Enthusiast

Blackwidow_Chevy

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  • Author
Posted

Thanks never seen those products with my google search from hell and back if those tools are hitting high loosen torque values like it says then they are hitting higher than the impact am about to pick up 1500 lbs. I sprayed brake cleaner last night herd rumors that it breaks the red devils loctite. I’ve never ran into anything this tight before it’s really kicking my ass right now and am doing all this just to install the MF supercharger ! And come to find out it has a extra pulley I had to add on top of the HM BLR pulley this is holding up all other left over installation to get the truck back and running. But any information helps me guys thank you 

Blackwidow_Chevy Enthusiast

Blackwidow_Chevy

Posted
  • Author
Posted

How long do you have to heat the bolt if I go for heating it and also do y’all think the bolt is reversed threaded and have to turn to the right the bolt torwards driver side ? 

795A2963-59FE-438D-B9F4-EA3E4180B86F.jpeg

16LT4 Enthusiast

16LT4

Posted
Posted
2 hours ago, shakenfake said:

You shouldn't need to heat the bolt. impact gun that mfer off

Agreed.  If an impact can't remove a red loctited 300 ft-lb bolt, it is a piece of garbage.

 

Rod cap bolts on a Lugger 18L I-6 are 650 ft-lbs (Cummins V12 is 690 ft-lbs, IIRC), and we get those on and off without issue.  Just keep that in perspective... 😉 

CamGTP Senior Enthusiast

CamGTP

Posted
Posted
On 1/25/2022 at 3:02 PM, rlcole321 said:

Also note, that is a "Torque to Yield" bolt and CANNOT be reused!

Sure it can lol. You just have to not care enough to replace it, which happens all the time.

 

If everyone followed the TTY stuff you'd have to replace more than half the bolts you take off the vehicle to do any service work.

  • Haha 1
Blackwidow_Chevy Enthusiast

Blackwidow_Chevy

Posted
  • Author
Posted

Update heavy duty socket 24 mm with 1200 lbs torque Milwaukee impact wrench worked. Honestly it had a lot of loctite factory glue  and I believe the socket made it work it’s so dam heavy too of all the things you can try only this combination worked for me but mission accomplished thanks every one for the advice. 

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