JD B crankshaft removal?

[gpogpo]

Gotta get the crankshaft out of my B so I can press the gear back on. Anyone know if I can remove the crankshaft with removing the LARGE reduction gear cover from the right side of the tractor behind the clutch/pulley? I think I'd have to drain the transmission to do that?

 

[gpogpo]

Oops.....I meant to say "without" removing the large right-side cover.

 

[Mike M]

I think you have to remove both side to get it out.

If you are only putting on a drive gear just heat it up until spit sizzles good on it then drive it on. Should be able to do this in the tractor.

 

[ronhf]

You need o remove everything on both the flywheel side and the clutch side. The reduction gear must come off but there is no need to drain the transmission. A lot must come apart but its not too bad a job.

 

[gpogpo]

Hey Mike, that's what I wanted to hear! Turns out all I had to remove to get to the crankshaft gear was remove the left bearing housing. The loose gear was right there. I'm going to clean up the surfaces, put in a new key, warm up the gear, add a little sleeve retainer and bang it back on. I still would like to know---if a guy removed the first reduction gear cover (behind the clutch/pulley) wouldn't all the rear end grease run out there? Thanks for all you guy's help!

 

[johns48jdb]

no the rear end dope want run out. the only oil in the first reduction gear is motor oil, if your lucky. if you take the cover off drill and tap a hole to add oil to the frg cover and one to drain it as well. lots of talk here and on johnny popper about doing this so do a search on johny pooer for sure. there is a well that is below the little bearing cover that is to the rear of the frg cover naearly under the right break. take that cover off, if its dry then you need to add oil to the well in the frg cover. see owenrs manula. if yo drill and tap the cover per a service bullentin of 1951 be careful where you drill and tap l plugs. if yo try to put in to big of a plug you want have meat enough to make enough threads for a good seal. if you want more info you can em me and i'll give you my cell phone number.

 

[RobMD]

YOu have to drain the rear end before taking the reduction cover off. And I certainly hope you don't have grease in the tranny. Supposed to be 140 wt. depending on the year of your tractor.

 

[Mike M]

You shouldn't need to drain the tranny,rear end to remove the reduction cover on a B. They have engine oil in them. Still be a good idea to drain the rearend,tranny as years of water and goo could be in there needing out.

How did the gear get loose ? I once knew a fellow who had his fylwheel too tight with no endplay and somehow that bound up that gear as it is the thrust on one side and it cracked the gear. If your gear is loose cold on a cold crank I'd be looking for another gear and hope the crank is ok and another gear will be a press fit,which warming the gear will expand it so as to drive on easy.

 

[gpogpo]

Thanks Mike. The gear was easy to get off since it was loose. Like you suspected it had a hairline crack. Almost missed it. Now I'm looking for a good used replacement. Sure hope it didn't mess up the crankshaft!

 

[Mike M]

Did you buy it this way or do you know what made it crack ?

 

[gpogpo]

I bought it several years ago. All the seller (long gone) told me was he thought it had magneto problems. It was running rough because the gear was loose and jumping back and forth.

 

[Dennis shoemaker]

Where can i get a replacement cork oil seal for the spacer on the left end of the crankshaft of my 49 B?