How to remove harmonic balancer bolt without breaking? - Ford Mustang Forum
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post #1 of 16 (permalink) Old 09-06-2005 Thread Starter
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How to remove harmonic balancer bolt without breaking?

How do I remove this bolt without breaking it? I also need to know which direction to turn it facing the engine. I do not have the battery connected and am alone in this venture. The ultimate goal is to replace the cracked timing chain cover. HELP!!!
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post #2 of 16 (permalink) Old 09-06-2005
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its a regular threaded bolt...so lefty loosy righty tighty....in other words...i had a hard time too...but i used a breaker bar and put it on the bolt and stuck the end on the floor and took off the ignition coil wire to the distributor and cranked it...the engines torque will loosen the bolt for u...remember to take out the washer too when u pull the harmonic balancer...
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post #3 of 16 (permalink) Old 09-06-2005
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the bolt is normal thread so turn it counter clock wise

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post #4 of 16 (permalink) Old 09-06-2005
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It's a 15/16" socket. It's tight as hell. Some people have had luck with putting the breaker bar on and the end of it resting on the ground on the drivers side and cranking the motor for a second. It will break it loose.

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post #5 of 16 (permalink) Old 09-06-2005
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How do you go about torquing the bolt down?

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post #6 of 16 (permalink) Old 09-06-2005
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Put the car in gear.

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post #7 of 16 (permalink) Old 09-17-2005
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Ok are you sure about that one????
I just put the car in gear and the engine still rotated??? Have any other suggestions?

1992 Mustang GT AOD 3:73 BBK headers and X Pipe w/ cats 144,000 miles
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post #8 of 16 (permalink) Old 09-17-2005
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the best way is to use an impact wrench since the engine will rotate and if you have an auto...
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post #9 of 16 (permalink) Old 09-20-2005
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THere has to be a way to torque that bolt down without using an impact gun. Does anybody know?

1992 Mustang GT AOD 3:73 BBK headers and X Pipe w/ cats 144,000 miles
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just tighten it

just tighten it as much as u can the torque from the engine will tighten it as u drive thats why its so hard to get off
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Put your ratchet on and tighten as much as you can before it turns the crank, then take something with a little bit of weight like another 1/2in ratchet and continue to tap it little by little, this should tighten it down enough to not be worried about it.
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Um...bad...bad idea

Using the engine torque to remove the harmonic balance bolt is probably not the safest idea.
Use an air wrench.
There are torque specs for the harmonic balance. Off the top of my head I think it should be torqued to around 70 ft/lbs, then loosen the bolt half a turn, and retorque to approx. 38 ft/lbs.
You may need a bolt that is longer than the stock bolt to seat the harmonic balance on the driveshaft because often the harmonic balance won't fully seat. If it won't seat on the driveshaft, you won't be able to thread the stock bolt. Use the longer bolt to seat it, but be careful not to over tighten it. Remove the longer bolt, and then torque the stock bolt to the proper specs.

At those specs, you shouldn't be able to turn the motor over if you place the transmission in 3rd or 4th gear. You don't have to gorilla wrench your harmonic balance on. I'm not sure about AT cars. If your engine is still turning over, maybe remove a spark plug and jam one of your cylinders up with a long screwdriver. (Don't really do that...)

I got this information from Steeda when installing UD pulleys, but don't quote me on the ft/lb specs...they may be slightly off.
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Quote:
Originally Posted by 89GT5liter View Post
its a regular threaded bolt...so lefty loosy righty tighty....in other words...i had a hard time too...but i used a breaker bar and put it on the bolt and stuck the end on the floor and took off the ignition coil wire to the distributor and cranked it...the engines torque will loosen the bolt for u...remember to take out the washer too when u pull the harmonic balancer...
Hey I just wanted to say thank you for this tip......It worked better then i thought....now how do i tighten it
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Cool

Try reading the post above your last post by sillyrabbit. He spent alot of time laying it for ya.

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Quote:
Originally Posted by vyper73 View Post
Hey I just wanted to say thank you for this tip......It worked better then i thought....now how do i tighten it
If it's a manual transmission put it in 5th gear.

Damper to the crankshaft 79-90 Lb-Ft .... Large bolt with washer

Pulley to the Damper 35-50 Lb-Ft... 4 small bolts with washers
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