Splitting a B

[DanR]

Got my first green tractor in the stable with all the red ones a 41 B. I need to replace the block. Can someone walk me thru the splitting procedure? I did a search but could not find info on a 41B. Thanks

 

[oros35]

You don't need to split the tractor to remove the block. Remove the head and everything around it. Unbolt the block, do some twisting and rotating and it will come out the side of the the frame.

I would suggest getting a manual to do this job. The descriptions and pictures are a big help. They are nothing like a red one and can can get you screwed up if you try to work on it like a red one.

 

[Kurt_JDB]

Dan,

Welcome to the board and the green world.

You do not need to split the tractor to remove the block. The best thing you could do with your time today would be to get a copy of the B service manual. SM2004. It is one of the best service manuals ever written. Truly. You will not regret getting a copy. While you are at it, pick up a copy of the parts book (free download from Deere) and the operators manual.

They are available from Deere, or at about 1/2 the cost from Davenport Tractor, formerly Deerly Departed. The procedure is well outlined in the manual to remove the block.

But Basically You will want to remove the carb, Exhaust pipe, Valve cover, ventilator pipe, Upper water pipe, lower water pipe - remove the head, open the crankcase cover, unbolt the rods, slide the rods and pistons out the front, unbolt the block from the case and frame and remove it.

This is all easier if you go ahead and remove the hood and gas tank too.

But get the manual. You won't be sorry.

Kurt

 

[DanR]

Thanks guys. The manual is on order. This should be a piece of cake compared to the red ones.

 

[old popper]

Read the service manual carefully before you start prying and tugging. If my memory serves me correctly, there is an oil line from the oil pump that needs taken loose at the lower rear of the "B" block before removal. Good luck. Soon you will know why JD advertised "simple to work on"

 

[deere36]

Here are some pictures of my 39B during teardown, hope it helps.

Larry

 

[Patsdeere]

Anything beats splitting a red thing. Heck even the clutch is easy to replace. Just pop the cover off the drum pull the pressure plate and swap discs. I bet you could do 40 clutch jobs on a JD B in the time it took to do 1 on a red beast.

 

[DanR]

Yeah, yeah, rub it in. I do like my reds but I like this green thing more everyday. I look at it this way. Ordering the manual got me off my butt to get things done before it arrives.

 

[DanR]

I got the manual, read it cover to cover, and went to work on the B. When I pulled the cover SURPRISE the inside of the crankcase was painted RED. Now I'm wondering if this tractor was sold to the CIA. Or maybe John D was a friend of Cyrus Mc.

 

[DanR]

Update: After 4 hours I got the pistons and rods out. Many hammer marks on both. One rod cap was on upside down. Two bolts had no cotter-pins. One rod is marked MF. Both poured bushings are shot and had much galling. Rod bolt nuts do not match. Measured 1/2" of goo in the crankcase. I'm at a turning point on this old gal. If I go ahead with it where can I get the newer style rods with inserts? I don't know if the crank can be saved yet it's pretty beat up also. Thanks, Dan