First time splitting a crankcase...

[jimdad07]

I am going to split my first crankcase, on my 044. I have the service manual but none of the tools except the flywheel puller I ordered from my Stihl dealer today. Can anyone give me any advice on doing it farm style?

 

[fidiro]

opcorn:

Don't forget lots of pics(before, during & after rebuild). Pics have to make it look real easy to do the rebuild so that it will give me a reason to do the same on my 440.

 

[jimdad07]

I already have some pics, but I am waiting to pirate those of a pro to make me look real good.:agree2:

 

[subhunter]

I am gathering parts to do the same thing to a husky 266. It will be my first and I am going to try it redneck myself. Good luck.

 

[jimdad07]

I am gathering parts to do the same thing to a husky 266. It will be my first and I am going to try it redneck myself. Good luck.

Good luck to you too. Before you know, we might be able to not only talk the talk, but scream at the saws when they don't go our way. I have torn apart a bunch of mini macs for parts, but nothing like this. So far it has been a good learning experience.

 

[pioneerguy600]

What do you have that can be made into a puller? Can you weld?
Pioneerguy600

 

[jimdad07]

What do you have that can be made into a puller? Can you weld?
Pioneerguy600

I have a two jaw puller, and I can weld ok, enough to get by.

 

[subhunter]

I have a two jaw puller, and I can weld ok, enough to get by.

Sounds about like me. My only welder is a HF stick welder that does about as good as me...:hmm3grin2orange:

 

[uncurtis]

If you are planning on putting in new bearings and seals you can heat up around where the bearing sits and hit the end of the crankshaft with a rubber mallet. Otherwise like mentioned before you will need to need to make or find a puller.

 

[bullseye13]

Make sure that you have all the screws out before you start splitting the case

Remove indexing pins fromt the case before you start pulling

Take 1.5X1.5" angle iron and drill two holes in it, to fit over the bar studs. Drill another hole in it to get the center of the 2 jaw puller through it onto the crank. Its handy to have a puller with a center pin in it. Tighten angle over bar studs, use 2 jaw to pull halves apart. Bearings come off crank with pullers, and push out of cases with sockets & hammer. Please dont be cheap, and replace your seals while its apart.


Reference the "installing crank bearings with heat" thread for how to get it back the easiest. Doing bearings is really time consuming, but well worth it.

 

[southbound]

Just make up something like this..

Don't forget to punch out the pins and you will be fine...

It is the putting back together I want to watch... :hmm3grin2orange:

 

[southbound]

This post helped me a lot...

 

[jimdad07]

If you are planning on putting in new bearings and seals you can heat up around where the bearing sits and hit the end of the crankshaft with a rubber mallet. Otherwise like mentioned before you will need to need to make or find a puller.[/QUOT

I want to save the bearings because I am pretty sure they are still good and they are a pretty penny, but the seals are bad and I figured I should do the crankcase gasket if I am going into the saw this far. I have a multitude of torches, but I think my heatgun I use for thawing evaporator coils should work better for heating the case?

 

[pioneerguy600]

I have pulled so many of the Stihl saws apart I could not count them. The 044`s are very easy to pull using the two screws that hold the oil pump in place. You need to figure a way to either bolt something to those two screws or use the threaded holes the screws come out of, then use the two jaw puller to hookup to these adaptations and let the puller screw push on the end of the crank, this will pull the cases apart. OR
If you have a welder and can weld a little then a 3/8" bolt with about 3" of thread, a 3/8" nut, a short length of 5/8" water pipe and a 1/4" thick washer or make a metal disc like a washer. The nut gets welded to the top of the pipe, the bolt runs through to push on the crank, the disc gets welded on the other end of the pipe, it will need either corresponding holes to match the oil pump holes or you can just cut two slots from the outside edge of the disc in towards the pipe, this will allow the disc end to connect to the case with the two screws, run the bolt down to contact the crank end and then turn the bolt to separate the cases.
Remember to remove the 5 case through bolts and the 2 drive pins first.
Pioneerguy600

 

[subhunter]

I am not wanting to hijack jimdads thread but does my 266 also these drive pins?

 

[Trigger-Time]

About any good stout piece of steel or even alum. will work.


http://www.arboristsite.com/showthread.php?t=46726&highlight=

TT

 

[jimdad07]

This post helped me a lot...

Very good thread, thanks for the link. I am liking the angle iron method but I also like the one you and Pioneerguy use. My other question is if I am splitting the case, what else should I replace other than the the oil seals and the case gasket? Can I save the bearings?

 

[pioneerguy600]

Very good thread, thanks for the link. I am liking the angle iron method but I also like the one you and Pioneerguy use. My other question is if I am splitting the case, what else should I replace other than the the oil seals and the case gasket? Can I save the bearings?

You can save the bearings but check them out closely, they must turn smoothly with no slop, wash them out very well and if you can mount them on your finger and spin the outer race you should not feel any catch or hitch when the outer race is spun.
Pioneerguy600

 

[fidiro]

This post helped me a lot...

I just went through that thread about the 064, great read.

By reading it I actually found the same issue on it as on my 440 with the broken case dog mount(pics on post 64). He fixed it with JB weld and fiberglass which I will attempt to do the same. I wonder how it's holding up on his 064. What's the rules about digging up old bones(threads)?

 

[Trigger-Time]

What's the rules about digging up old bones(threads)?

None that I now of, IMO it is good to bump the good older info threads.



TT