Broken Bolt V-4 90hp

[bktheking]

Re: Broken Bolt V-4 90hp

Not to get off track, next time, smack the end of the puller with a dead blow hammer

Will do, happen to have one of those in my toolbox.

 

[bonitasprings]

Re: Broken Bolt V-4 90hp

Opted for the 3 new holes. Drilled and heli coiled today will attempt removal tomorrow.

 

[jonesg]

Re: Broken Bolt V-4 90hp

HAH! I just did that on my flywheel. Using impact wrench on puller for an hour wouldn't pull it off. Gave the puller a good smack with the hammer, POP, came right off.

The impact wrench did all the work but the hammer sneaks right in and takes the credit. Typical.

Mine came off with a couple of taps from a lead dead blow machinists hammer.

 

[bonitasprings]

Re: Broken Bolt V-4 90hp

You're tapping the center pin of the harmonic balancer...right? Also, This is the 1st flywheel I've removed. I measured the bolt...1-5/16. Sound right? How do you hold the flywheel still while removing the bolt? Use a box end wrench and use the HB with a rod through the bolt legs to hold the flywheel?

 

[nymack66]

Re: Broken Bolt V-4 90hp

Very simple use a cheap Harbour Freight puller and pull the flywheel off, PM your phone number and I will explain to you the procedure, I can assured you I experienced the same problem a year ago and have help countless others since. NEVER apply heat to the flywheel since it can easily warp or damage the magnets under it.
Cake Job

 

[billy4hp]

Re: Broken Bolt V-4 90hp

You're tapping the center pin of the harmonic balancer...right? Also, This is the 1st flywheel I've removed. I measured the bolt...1-5/16. Sound right? How do you hold the flywheel still while removing the bolt? Use a box end wrench and use the HB with a rod through the bolt legs to hold the flywheel?

Yes, when using a puller on a pesky flywheel, bearing, etc, if things don't start moving with reasonable pressure, smacking the center screw with a dead blow hammer will often provide just enough vibration to get things moving without offering much risk to the parts that are being disassembled...

I other words, tighten it down and give it a good smack....

Happy 2010...

 

[bonitasprings]

Re: Broken Bolt V-4 90hp

Tried tapping and heli-coiling 3 new holes but that didn't work so I'm back to trying to get that original broken bolt out. Can't afford to take to machine shop to weld a bolt onto it so I'm going to try spinning it out with a tap/punch. Got the word on no heat and it's a good thing because I was tempted !

 

[kenmyfam]

Re: Broken Bolt V-4 90hp

Tried tapping and heli-coiling 3 new holes but that didn't work so I'm back to trying to get that original broken bolt out. Can't afford to take to machine shop to weld a bolt onto it so I'm going to try spinning it out with a tap/punch. Got the word on no heat and it's a good thing because I was tempted !

What did not work about the 3 new holes ???
Why the helicoils ???
What size did you tap for the bolts ??

 

[tx1961whaler]

Re: Broken Bolt V-4 90hp

Take the helicoils out of the new holes that you drilled, tap them with the biggest size bolts that you can get in the holes, quit foolin' around and pull that thing off!

a hint: keep the crank nut screwed on a bit, lest the flywheel pop off violently and hit you....

 

[Tim Frank]

Re: Broken Bolt V-4 90hp

Opted for the 3 new holes. Drilled and heli coiled today will attempt removal tomorrow.

Why did you need to helicoil the holes?

 

[bonitasprings]

Re: Broken Bolt V-4 90hp

tapping out tomorrow to 3/8-18...no heli. Trying to do this project between life and work. I used the 5/16 heli's cuz I had the equipment already. Once I get this flywheel off it's gonna have to be rebalanced.

 

[kenmyfam]

Re: Broken Bolt V-4 90hp

tapping out tomorrow to 3/8-18...no heli. Trying to do this project between life and work. I used the 5/16 heli's cuz I had the equipment already. Once I get this flywheel off it's gonna have to be rebalanced.

No need for helicoils. Drill and tap as large as you can for strength and go from there.
Why do you need to re-balance ???

 

[bktheking]

Re: Broken Bolt V-4 90hp

Shouldn't have to rebalance it.

 

[kenmyfam]

Re: Broken Bolt V-4 90hp

Shouldn't have to rebalance it.

Great minds ??

 

[bktheking]

Re: Broken Bolt V-4 90hp

Great minds ??

Was just waiting for you Paul, I knew you'd say the same thing.