I just cant get it. Steps so far.
All involved 1/2 In. Drive 25 In. Breaker Bar and lots of PB Blaster.

1. bump stater full battery to dead battery.
2. Cargo strap (Broke) Got one with 3ooo lb breaking strength. To bind the pulley, Its holding but I still cant get it. I also banged on the breaker bar while pulling.
Still no go.

I'm going to get pipe later to add to the breaker bar and see if that works.
Or should i just buy this 1/2 in. Heavy Duty Electric Impact Wrench from Harbor Freight ? Im afraid to use a torch to heat it, 1. I don't really know how to do it. 2. Every thing is covered in oil.

My fear is snapping the bolt. F.I.Y. I'm using a 6 point Impact socket form Harbor Freight to. I heard they are less likely to round the bolt. Also I have the head off now if that maters.
One other note: I had the front seal done a few years ago . I suspect they put the pulley on and used an impact wrench to just tighten the pulley and force the pulley on so i'm sure it's beyond spec.

And the dam flu shot in to by biceps is not making this any more fun, Im sore and tired been at this fro 3 days.

Here look upon the face of frustration.

 

I highly recommend you get a 1/2 inch drive impact gun. Either air or cordless, it doesn't matter. I don't think you will get it loose w/o an impact gun.

 

You may need to hit the bolt with some heat (from a torch) to loosen/break the thread sealant that's on a new, factory bolt.

I've had luck with a 3 foot long breaker bar and a 3 foot long pulley holder (I made, look around for examples, from 2.5" x 1/4" steel from home depot), but it sounds like you may already be past that point.

Something else I've heard of is to slowly cut away the flange on the outside of the bolt. That flange acts as a large spring to keep tension on the bolt to ensure it doesn't back out, so if you remove some of that spring/clamping force it might be easier to loosen the bolt.

Good luck.

 

How are you holding the crank to keep it from turning? A cargo strap (which didn't work for you) probably has way to much "spring" to allow you to put torque on the bolt. I suggest this tool (obviously): https://www.yotatech.com/forums/f116...h-3vze-137934/ . Which will cost you approximately $0.00.

If you can hold the crank securely, you should be able to put north of 400 ft-lbs on a 25-inch extension (the spec is 181 ft-lbs, but you are correct that you may need quite a bit more). There really aren't too many 1/2" impact wrenches, electric or pneumatic, that can reach that.

BTW, Ixnay on using a pipe for more leverage. There's a reason they put all those stickers on the breaker bar telling you to not do it; it's a good way to get hurt. And please don't bang on the breaker bar either. A year from now you'll snap it off, and you'll think back on this as the cause.

 

Don't know what type of impacts scope103 is used to, but every one of them in my toolbox will exceed 350 Ft/lbs. If you use an impact, chances are you won't have to hold the crank pulley.

 

Well, the Harbor Freight one suggested by obmi certainly won't reach 350 (and based on my experience, not even the 230 "max" rating it claims). But I see that a $500 Snap-on claims it will. Of course, you'll have to remove the radiator just to get it in there.

And you STILL need the crank holding tool in order to put the bolt back in. Unless you just want to shoot it in with your $500 810ft-lb Snap-On and hope that the 181ft-lb torque spec isn't really serious.

Your choice.

 

I don't think I said anything about putting back, just taking off. Of course you will need to apply the proper torque to the bolt when reassembling. They don't pay those engineers that big money for nothing.
I had a friend once that kept putting the head bolts on a small block chevy in with an impact gun and couldn't figure out why he kept blowing head gaskets. LOL Some people just never learn.

 

I went to lowes and got the steel to make the pulley holder. And yea the strap is/was stretching and letting it rotate about 40deg.

If it still does not work i will try heat, and if that don't work i will hit it with he angel grinder and weaken or cut off the flange.

 

I have in the past taken the motor to a shop that has a 1/2 air hose, 3/8 just wasn't enough to break it loose. It can be tight.

For me what was to be just a timing chain swap turned into having to pull the motor and take it to the shop with enough air to break it loose. You already have the head off, it wont take much more to pull the motor if you have a engine hoist and a way to haul the motor.

I would not cut the flange as I would be worried about weakening the bolt and it snapping.

 

air tools make life so much easier. ingersol has a 1/2" gun for under $150, model 231c i believe. i have one for the house and it'll bust loose just about anything. at work i use ingersol titanium, the best on the market in most folks opinion. get a 25-30 gallon compressor and a good air hose, problem solved. investing in tools will make all your future repairs and projects much easier.

 

I used the breaker bar/pipe extension idea on mine.
I've tried wd40. pb blaster, and a couple others. The thing I find works best is a 50/50 mix of Auto trans fluid and acetone(you can buy 100% acetone at many drug stores...finger nail polish section)

 

My AirCat 1/2" Has 1000 Foot pounds of torque in reverse

If you have air maybe you can borrow or have a friend with something better help.

 

I used a 3/4" impact gun took it right off

 

I am making the pulley holder from above today. But I'm thinking i want to heat the bolt too. I have a propane torch, But what is the right way to use it. I and only find 2 YouTube videos.
I will link them below, But one says heat the side of the bolt flange and the other says heat it all.

So how hot? glowing red on the one spot or the hole thing?


Heating just the edge:
[YOUTUBE] [/YOUTUBE]

I can't find the second one. But it was going around the bolt.

 

Electric impact doesn't have a chance! Three days? All the money and trips to the store buying this and that? Someone mentioned buying an impact and having it for the future projects that you will have! Great idea and it would have been off by now. Mine also does 350-400ft lbs and so far there has been nothing that it will not remove. Soak it with PB Blaster and acetone, wait ten minutes, and go to town.
If an air compressor is the issue Harbor freight has pancake one's for under $100. It will give you 20-30 seconds of full-poop with the impact. My crank bolt had been on for 25 years and this method took it right off.

 

The problem is i live in an apartment and I'm trying to do this kind of stealthy. I can work after 6pm and on Sundays. It sucks but its what i have to work with.
Right now I own this 3 gal. 1/3 HP 100 PSI Oilless Hotdog Air Compressor Will that run this 1/2 in. Professional Air Impact Wrench from harbor freight for a few seconds at a time?

 

Kinda sounds like your only option unless you move the truck to a friends house and work on it there.
Do it at 6am Sunday morning! No one will notice! I promise.

 

Sigh I guess i should go out an pull the radiator then run down to Harbor freight and get the Impact winch.
Now that i think about it Im about $500 into the head job.

50 for the gaskets and new head + Some tools hear and their. + 125-150 for the air gun, extensions and sockets , Then I get to see if i need a timing chain and full kit $10 or just a timing chain and METAL guides.

I could of just paid to have all this done, But then I would not have all my toys. Plus the wife is impressed that I can do all this and keeps barging to her friends.

Oh God I hope is is not volunteering me to fix there Cars and Trucks.
I'm going to get VOLIN-TOLD to fix her friends vehicles aren't I?

 

Ok i got the impact wrench but its poring rain so I will see what tomorrow brings. But i think with my compress it will only get up 4 sec burst with the air tool. 3 gallon = 0.401042 Cubic feet and with average air consumption of 6 CFM I'm thinking at best i will get 4 seconds of tool time between are compressor refills.

That should still work even is i have to wait between refills right?

 

I would heat it with your propane torch and then hit it with your impact. And when run out of air continue to heat it while pumping back up and hit it again