Great video! Very clear instructions. I made similar pullers for bearing and crank installation several years ago and, as you Aussies might say, they work a treat. I try to use heat whenever materials permit (probably less trauma to the bearing pockets), but these tools save the day when heat cannot be applied. One can also use mild temperature differentials in conjunction with these pullers to ease the process. Again, excellent tutorial!
Good one Tom I actually ate a whole bag of popcorn 🍿 on this one you're such a bad influence 🤪 The wear on the bearings intense I mean right ? Somebody got there money's worth on that saw wow !!!
I could make the tools up to fit & remove that crankshaft. I could use a socket or a piece of pipe of the same diameter to fit the seals as well. It's similar to my power tool repair days but we didn't have any special tools to dismantle them, only a hydraulic press,a bearing separator & a 3 jaw puller,we did have a lathe,an undercutting machine to undercut the armature slots in the power tools & a growler to test the armatures as well ! I left them after they fired my manager & yes,when that bearing fell apart in the video that was 2 of them whose a Walmsley who owned the business was praying that was going to happen to the power tools that I repaired. My manager had 43 years of experience in the power tool repair & electric motor rewinding trade,it was 21 1/2 years ago that I left the company,I can't speak to my old manager anymore because he died of cancer 5 years ago this Sunday !
What a hell of a score with all those parts. What the heck happened to the alloy furface in that crankcase? Looks like it had an acid bath. I have a 066 in need of a rebuild, so I'll be following along. Mine came without a piston and needs crank bearings replaced as they seem a little worn. I'd love to find a well priced OEM piston, but will likely need to go aftermarket.
That is known as mag rot, it’s caused either by moisture contact with the magnesium, but in this case it’s caused by the owner cutting palm trees and the oils attacking the magnesium. Although unsightly, in this case it doesn’t affect function in any way, therefore I decided to keep the cases.
Is that bearing tool original with the hot and cold method? Because you don't want to hit on the inner race of the bearing in this application, due to the lacking support
I have so many from stihl I can’t remember which fits which saw, but because I didn’t put any force on the bearing as I was using heat, it was fine to use in this application.
@@VintageEngineRepairs Replacing crankshaft bearings is a bit of work therefore I do not risk anything. Even when I use this method I do not hit the bearings this way, but if it works for you its all good.
It’s a great question, normally I would, but that bearing came from stihl like that, it’s an oem part. Because of its step to take the seal you can’t use a bearing from NSK, SKF etc, it’s proprietary. The good thing about plastic cage is if it lets go. It doesn’t damage the engine like metal, but metal lasts longer.
