Assembling Case Halves

[NCFarmboy]

Sweet potato frys are the best.
Shep

 

[MustangMike]

I use an $8 HF heat gun, works great. Don't have the nice tools, as I don't do many of them, so I keep a hammer and the correct size socket handy so I can use it while the parts are still warm. Usually, the flywheel side goes right in, and the other side decides to get stuck as I line up the case pins. Then the hammer comes out, and they go together just fine!

If I did more of em, I'd buy the tool.

 

[Mattyo]

hammers.... ugh...





sup Mike?

 

[PA Dan]

I use an $8 HF heat gun, works great. Don't have the nice tools, as I don't do many of them, so I keep a hammer and the correct size socket handy so I can use it while the parts are still warm. Usually, the flywheel side goes right in, and the other side decides to get stuck as I line up the case pins. Then the hammer comes out, and they go together just fine!

If I did more of em, I'd buy the tool.

Watch that HF heat gun Mike. Mine lasted about four saws before it caught on fire!

 

[MustangMike]

I'm past that, but thanks for the warning!

 

[Al Smith]

You folks are making too big of a deal about heat shrink fitting .It's been done for years .Personally I don't feel it's a necessary part of manufacturing but evidently Stihl does .The Germans for the most part make good stuff but keep in mind they lost two world wars .Very much "over" engineered .BTW I've dealt with the Germans for the last at least 40 years on stuff in the auto industry .Love em like brothers but my Gawd are they bull headed .

 

[Moparmyway]

I'm just going to say this:
I've done cases without Mattyos kit, and I've done them with

I use them every time now

 

[Mattyo]

 

[KZ1000]

I just made this set with a 8mm and 10mm clutch nuts and some yard sale parts, think it should work. Welded the nuts to 1/2 nuts so as to change from one to the other.

 

[Tor R]

I'm just going to say this:
I've done cases without Mattyos kit, and I've done them with

I use them every time now

I agree with you Kevin.

Bought my first kit back in 12 or 13th, and I've never really cranked together a case without tools after this.

My dealer let me buy them for around 18-25$ for a kit who is the price he has to pay Husky, price depends on what model I buy, just left to buy the 266 and the 281 kit and I think I'm 100% covered.

Nowadays I'm just into making seal mounting tools with the help from @rattler..............

 

[PogoInTheWoods]

So what's the latest on availability of your tools, Matt?

 

[PogoInTheWoods]

Nevermind. Just checked your other thread and see that you'll be posting updates over there.

 

[Mattyo]

I won't threadjack ... check the other thread for updates ...thanks Pogo

 

[PogoInTheWoods]

BTW, heating bearings in hot oil to easily slide right onto the crank followed by heating the case halves to install the crank requires no tools except the correct T-handle to screw the halves together.

That said, I happen to like the yard sale toaster oven approach to heat case halves for dropping the bearings into place. Expands the magnesium uniformly (instead of locally as with a heat gun) which seems like it would be a more thorough fitting process between the bearing and the pocket (or bore). For crank installation I typically just use extended length case bolts to get the halves close enough together for the normal bolts to button it up. Not particularly fast. Not expensive, either. I will admit that Matt's solution sure looks like the cat's ass for pulling a case together, though. Maybe I can talk my wife into getting me one for Christmas!

 

[beaglebriar]

A seven dollar toaster oven from the SA boutique and some homemade assembly tools (thanks to Tor and some other guys for the dimensions)are what I use for most cases now.

SKF recommends 257° F as the max temp to heat a bearing for installation. Toaster oven works great for this. I've done some crank bearings in quads with it as well . It's great tool for the shop, wish I woulda got one years ago.

 

[PogoInTheWoods]

Hope Scott doesn't mind. Seems like another 'right' place and time for em. 'Course not all cases are going to go together correctly with the bearings on the crank first, but the principals of using heat as your friend couldn't be demonstrated much better than this.