Track jammed

[oldchips]

Yes, did roll it a few feet to load a log on the sawmill, couldn't waste the time, worked ok. It can stay where it is, nowhere better in the wood, full of brambles that catch you at every turn.

Because the planetary gears have two joined gears, each working on its own ring gear, then they need to be correctly phased when putting back together. Not noticed a comment about synchronising marks on the gears, but didn't pay much attention to the rebuild description! Is this something others do? What about building up the gears with high nickel welding rods? They seem to be used for restoring bucket teeth so pretty strong.

You need some type of hydraulic press to get the master pin out? I was wondering if I just unbolted the sprocket, then the whole assembly from the frame, whether it could be pulled out. Then just reverse with the replacement, been offered one for £1650 which is ok, the real problem is in ending up with two gearboxes neither of which I can fit!

Could really do without this! Car just died, mower engine dropped another exhaust valve seat.

 

[Bri963]

Can't remember on the old JS's for sure, but look for a pin with either a split pin or roll pin through it, that's your master. If they're pinned like that the chances are you'll be able to flog it out with a 14 pounder and drift. Hit it in, then out, and then all the way in, once you move it both ways it'll come. Just be patient and don't burr the end. If it is a press fit (no split/roll pin) you've got a fight on involving bottles, and if it won't move with the hammer, you'll need to take the pads off to get a puller in. Forget the nickel rods, what you build up will shear below where you weld it, and you'll never get the profile right. The gears are heat treated so what do you think welding will do?

As for your other plan, if you have a complete assembly, it's as easy as you say. Just make sure the flange where you bolt the sprocket on isn't fretted, and torque things up properly, then re-torque the sprocket as soon as you've moved the machine to make sure. Oh, and high strength thread lock.