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Crank End Play and Clutch Adjustment

M

mrf1002u

Member
An earlier post mentioned this but never gave an answer.

1937 Unstyled B. I have the flywheel off and the clutch and first reduction cover off. Since the clutch driver has no adjustment, I assume the clutch side is assembled before the flywheel goes on. Do I need to assemble the ENTIRE clutch and ALL the linkage before end play is set? Or can I stop at a certain point and then adjust the end play? I guess another way to ask it would be: When the crank is shoved toward the flywheel side of the tractor, what does it stop against? Is it the clutch driver hitting the inner clutch disk and pinching it against the clutch drum, or is there something else? If this is the case, wear in the clutch would eventually increase crankshaft end play I'd think. Trying to make sure I get the clutch set up right and end play also. I see no thrust bearing behind the clutch drum.

Larry W.
 
I've always adjusted the endplay after everything is put back together.. You can tie the clutch handle back, then tap the flywheel in. The crankshaft goes up next to the thrust bearing on the main bearing.
 
(quoted from post at 17:02:25 09/17/14) An earlier post mentioned this but never gave an answer.

1937 Unstyled B. I have the flywheel off and the clutch and first reduction cover off. Since the clutch driver has no adjustment, I assume the clutch side is assembled before the flywheel goes on. Do I need to assemble the ENTIRE clutch and ALL the linkage before end play is set? Or can I stop at a certain point and then adjust the end play? I guess another way to ask it would be: When the crank is shoved toward the flywheel side of the tractor, what does it stop against? Is it the clutch driver hitting the inner clutch disk and pinching it against the clutch drum, or is there something else? If this is the case, wear in the clutch would eventually increase crankshaft end play I'd think. Trying to make sure I get the clutch set up right and end play also. I see no thrust bearing behind the clutch drum.

Larry W.
Click to expand...

Clutch and flywheel setup is well covered in the operator's manual. The nice folks at 1-800-522-7448 will have the manual or the earliest applicable B manual on CD or hard copy.
JD is a good sport and has the parts list online. http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.HomePageServlet_Alt
 
End play is adjusted on the left side of the engine, the clutch is not involved in any way. Flywheel on the outside, VS crankshaft thrust surface on the inside of the left main bearing. End play can be adjusted in the field if need be as it's only dependent on where you clamp down the flywheel at on the crankshaft.

With the clutch fully assembled one can use the clutch lever to move the crankshaft to the left and even the right if you'll pop it over center and take care to not disengage it until after you are done setting end play with it. Setting mine at zero with the clutch lever, then just tightening the flywheel bolts caused it to back off to .010 end play so I called it good there.
 
" Flywheel on the outside, VS crankshaft thrust surface on the inside of the left main bearing"


Thanks Lee and all others who answered. That was what I was looking for. I wasn't sure what the crank bottomed out on when it was shoved to the left (flywheel side).

So, as someone mentioned. Is it really worth having SM2004 for an unstyled tractor? I think some of the early styled tractors shared parts with the unstyled right? Does that make SM2004 worth having?

Larry W.
 
buickanddeere,

I actually have the parts list and most anything for the US B. I do not have SM2004 though. The description on Deerely Departed, or now Davenport Tractor always made me think it wouldn't be of any help unless I had a styled B. Am I wrong? I will admit, I have not touched this project in about a year and I am probably guilty of forgetting what was actually covered in the Owners Manual (a lot I know). Also knowing that there was never really a service manual made specifically for the US B, I may have incorrectly assumed there was no procedure in any documentation I had. Thinking about it now, I realize that something as basic as crank end play might be the same as the early styled B. I think I may have one of the I&T Shop Manuals for the early styled B now that I think about it. I guess I need to get a copy of SM2004 too?

Larry W.
 
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