Case splitting using heat

[Stihl working Hard]

I like to seat the bearings in the case first, but if that works for ya then carry on.

I do the same have for years but I like looking at other options as well you never know

 

[VinceGU05]

great video!! yes i couldnt split a 084 case till i used the heat gun around the bearing area. and a few minutes it just popped apart. shall be using heat gun every time now.

 

[jmssaws]

I use a heat gun for splitting and a toaster oven for assembly. I use to freeze the crank but don't anymore.
I like to put the bearing in the case so it heat soaks.

 

[jmssaws]

I've split a cagilllion saws and never once used a splitter,I've never owned one.

 

[Brewz]

I like to seat the bearings in the case first, but if that works for ya then carry on.

That's the other way to skin the cat.
I have not tried that way yet but I see the merit in it.

 

[Stihl working Hard]

I use a heat gun for splitting and a toaster oven for assembly. I use to freeze the crank but don't anymore.
I like to put the bearing in the case so it heat soaks.

so for assembley you heat the cases with the bearings in then put the crank in at room temperature is that correct

 

[Stihl working Hard]

I use a heat gun for splitting and a toaster oven for assembly. I use to freeze the crank but don't anymore.
I like to put the bearing in the case so it heat soaks.

What is the downside to putting the crank in the freezer then installing it back into hot bearings in pre heated cases

 

[Brewz]

It takes time to freeze the crank for minimal benefit
If it won't go on with the crank at room temp there is something wrong of your case/ bearing is not hot enough

 

[Stihl working Hard]

It takes time to freeze the crank for minimal benefit
If it won't go on with the crank at room temp there is something wrong of your case/ bearing is not hot enough

Awesome Tony thanks up until now I used to heat the cases with the bearings in then freeze the crank for a couple of hours then assemble that's the beauty in this thread Iam continually evolving with my saw rebuilding methods thanks again awesome thread

 

[Brewz]

Awesome Tony thanks up until now I used to heat the cases with the bearings in then freeze the crank for a couple of hours then assemble that's the beauty in this thread Iam continually evolving with my saw rebuilding methods thanks again awesome thread

Yeah it's just time consuming and is not required.

I have a different 038 to put together but don't have bearings yet. Will get them leter this week

 

[Stihl working Hard]

Yeah it's just time consuming and is not required.

I have a different 038 to put together but don't have bearings yet. Will get them leter this week

Was also wondering what you use to slide the seal over the flywheel side of the crank to stop the seal catching the groove and tearing the seal or pulling out the spring.I have always used a piece of rolled up microfish was wondering on a new technique bar using a oem seal installer

 

[angelo c]

Was also wondering what you use to slide the seal over the flywheel side of the crank to stop the seal catching the groove and tearing the seal or pulling out the spring.I have always used a piece of rolled up microfish was wondering on a new technique bar using a oem seal installer

Celophane and 2 stroke oil

 

[Al Smith]

I like to seat the bearings in the case first, but if that works for ya then carry on.

I've done it that way also .Fact that is the way Stihl suggests to do it .

 

[Stihl working Hard]

Celophane and 2 stroke oil

Will definitely give it a go thanks

 

[Brewz]

I am going to give it a go!
Always learning we are..... yeeeesss

 

[Brewz]

Was also wondering what you use to slide the seal over the flywheel side of the crank to stop the seal catching the groove and tearing the seal or pulling out the spring.I have always used a piece of rolled up microfish was wondering on a new technique bar using a oem seal installer

This is something I struggle with also.
Will give the cellophane and oil a go for sure

 

[jmssaws]

so for assembley you heat the cases with the bearings in then put the crank in at room temperature is that correct

I heat the cases in a oven without the bearings.
Once hot I put room temperature bearings in the hot case and let the bearing soak for a few minutes then put the room temperature crank in.

I wear a pair of welding gloves and put it together with my hands,if you can't put it together with your hands you aren't getting it hot enough.

I use a toaster oven at 300 degrees for 10 min or so and there's no reason to freeze the crank.

 

[Stihl working Hard]

This is something I struggle with also.
Will give the cellophane and oil a go for sure

Thanks Tony the microfish is a pain to try and maintain shape

 

[jmssaws]

90% of the time the flywheel side seal is damaged from being drove in crooked

I get several saws that people have rebuilt and couldn't get lined out so they give up and send it to me, 99.9% of the time the new flywheel seal is the problem.
If it gets just a little crooked it will bend the lip and leak. I've ruined several myself. See them that aren't set deep enough and the flywheel eats it too.

 

[drf256]

Great video Tony. Thanks for sharing.