What are you using to split the cases and pull/install the crank seals?
But a husqvarna type C clamp splitter on ebay. For the crank, I use the
@Mattyo tool, but I used to freeze the crank, warm the bearings, and slip it in.
The bearings go into the case using heat.
You can do it all without specially tools, but you gotta get it all right. For disassembly, knock pins out and take out all case bolts. The case half should spin on themselves. Put on a grill, put on heavy welding gloves, heat case to around 350*. Using a rubber mallet or nylon hammer, wack crank and it will come out of both sides with bearings on it. Need a bearing puller to get them off.
For assembly:
Freeze Crank. Take Fly case half, heat bearing pocket with heat gun or carefully with a torch (rotating all the time), when case is smoking and its too hot to hold anywhere using light gloves, drop bearing in. Wait 2-3 min. The bearing will soak up heat. Then take crank out of freezer and stab it right into bearing. Should go right in.
Leave outside or freeze again. Put the pins back in, but leave them sticking out around 1/8” towards mating surface.
Then do PTO case same way. Usually need oil pump on to set depth on a Stihl for PTO bearings. When the bearing is soaking up heat, take frozen case, put gasket on it, lay on bench. The hot PTO case and bearing should drop right over the crank. The pins will keep the gasket location correct and stop you from sending it all home. Then use case boots to finish assembly. Tap crank back and for the with a punch until it rotates smoothly. Tap pins back in to correct location.
