mfd not working??

[oldcase]

I have a case 235 hydrostatic drive with mfd. I engages fine and when I look at the driveshaft it is spinning but no power to the front wheels.
This is my first tractor and only know what I've read in the owners manual.
Does it have a regular pumpkin with ring,pinion, spider gears, etc...is there maybe a key that could have busted?
Any help would be apreciated.
Thanks,
Rob

 

[Soundguy]

Check to see if that front driveshaft turns all the time when the tractor is rolling.. I've seen some designs that do.

I'm not familiar with your tractor type.. so can't comment on it specifically past telling you to get out your owners and aprts manual and start taking things apart till you can observe the specific inner workings at coupling points.

Soundguy

 

[oldcase]

Check to see if that front driveshaft turns all the time when the tractor is rolling.. I've seen some designs that do.

I'm not familiar with your tractor type.. so can't comment on it specifically past telling you to get out your owners and aprts manual and start taking things apart till you can observe the specific inner workings at coupling points.

Soundguy

The driveshaft only turns when I engage the 4 wheel drive (mfd), when not engaged, it doesn't turn.
figured I might have to just start tearing into it but was hopeing for a good starting point or maybe some "common" breaking points.

Here's a picture of me offloading it, maybe that will help with identification(only picture I have)
http://i23.photobucket.com/albums/b379/ridinthedune/newtractor007.jpg

 

[oliver28472]

Your tractor was made by Mitsubishi. You might want to vist that forum and look up Bill Rodgers at mitsubhi****ractorparts.com or Len Sheaffer at Sheaffer's Town and Country tractors. Both are good. Others are good too but these are the two that I know. They post frequently here on the Mits. forum. If the driveshaft spins only when the fwd is engaged something is not making contact in the front differential. Some parts may be missing if you don't even hear a grinding noise. Normally I think the driveshaft should be spun by front wheel movement regardless of whether the 4wd is engaged. Welcome to TBN!

 

[BTDT]

Can you put it on a concrete drive, jack up the rear end (with a floor jack with wheels), then carefully start unit and engage front drive, then do what ever it is you do to try to get it to go forward. Back wheel should be turning, and if front is working, it should (in my opinion) pull you along. Maybe if it is true HST, back may turn with out front turning, if that is the case, apply brakes (to stop back from turning), making the front engage. Listen for any unusual noise, popping, grinding, etc. Good luck.

 

[dynasim]

My tractor has two ways to disengage the fwd that are completely independent( a clutch on the front, and a gear engagement in the tranny). Have you pulled/pushed all of the necessary levers?

Chris

 

[oldcase]

Can you put it on a concrete drive, jack up the rear end (with a floor jack with wheels), then carefully start unit and engage front drive, then do what ever it is you do to try to get it to go forward. Back wheel should be turning, and if front is working, it should (in my opinion) pull you along. Maybe if it is true HST, back may turn with out front turning, if that is the case, apply brakes (to stop back from turning), making the front engage. Listen for any unusual noise, popping, grinding, etc. Good luck.

I had it in the mud (which I think would replicate the same thing) and the front never spun or made any noise at all.
Thanks

 

[oldcase]

Your tractor was made by Mitsubishi. You might want to vist that forum and look up Bill Rodgers at mitsubhi****ractorparts.com or Len Sheaffer at Sheaffer's Town and Country tractors. Both are good. Others are good too but these are the two that I know. They post frequently here on the Mits. forum. If the driveshaft spins only when the fwd is engaged something is not making contact in the front differential. Some parts may be missing if you don't even hear a grinding noise. Normally I think the driveshaft should be spun by front wheel movement regardless of whether the 4wd is engaged. Welcome to TBN!

I'll take a look, thanks.

 

[oldcase]

My tractor has two ways to disengage the fwd that are completely independent( a clutch on the front, and a gear engagement in the tranny). Have you pulled/pushed all of the necessary levers?

Chris

I did everything it said in the owners manual and pretty much tried everything.

Also, I lifted the front end and both wheels spin independantly, no connection felt at all, not sure if they are supposed to spin oposite or not at all.

 

[bx23barry]

The driveshaft should turn whenever the front wheels are turning (there aren't anything like locking hubs on any tractors I know about). If it only turns when you engage 4wd the transmission/tranfer case is working and something in the front end is broke. Yes it does have a ring, pinion, and maybe a key that could have busted? There might even be a shear pin on the diff end of the drive shaft. My guess is a broken axle if the wheels spin independantly.

 

[JerryG]

Put it in gear. Jack up the front. You shouldn't be able to turn either tire.
Then take it out of gear. Now when you turn on wheel, the other one should turn the opposite direction. If it doesn't work this way something is broke.

 

[AKfish]

Will both front wheels spin if the differential is not "locked" or a posi-track? With trucks and autos, one wheel can spin and the other will remain motionless.

With my tractor, under power, one front wheel will spin and the other front tire will just sit there (maybe wiggle abit).

Having said that, I know that even with non-posi-trac differentials, when you jack them up, both tires will turn simutaneously (in opposite directions) when spun by hand. Not necessarily under power, though.

Don't know about tractors, though. (Please excuse the dumb question.)

Akfish

 

[bx23barry]

All differientals work the same.

Will both front wheels spin if the differential is not "locked" or a posi-track? With trucks and autos, one wheel can spin and the other will remain motionless.

Two of the three things must spin right wheel, left wheel (they spin opposite with open diff) or driveshaft.

With my tractor, under power, one front wheel will spin and the other front tire will just sit there (maybe wiggle abit).

The spinnig one will be spinning twice as fast as when both are turning on the ground (in a straight line).


Having said that, I know that even with non-posi-trac differentials, when you jack them up, both tires will turn simutaneously (in opposite directions) when spun by hand. Not necessarily under power, though.

See #1 above

Don't know about tractors, though. (Please excuse the dumb question.)

Tractors are the same

Akfish

 

[oliver28472]

Keep us posted.

 

[oldcase]

Thanks for all the responces everyone!

I'm thinking axles at this point but won't have the time to open it up untill next weekend. I'll post when I either figure it out or get to a standstill.

 

[diyDave]

You say that one wheel spins, but the other wheel just wiggles a little bit? Sounds like you found the culprit. Start tearing into the wheel that just wiggles a little, and you are likely to find the interruption in the power train. Some things to look for: Broken axle-causes the wiggle as the rough edges of the axle rub together. Sheared key could do the same thing. Sheared gear teeth, Depending on design, there could be other causes.

 

[wushaw]

You say that one wheel spins, but the other wheel just wiggles a little bit? Sounds like you found the culprit. Start tearing into the wheel that just wiggles a little, and you are likely to find the interruption in the power train. Some things to look for: Broken axle-causes the wiggle as the rough edges of the axle rub together. Sheared key could do the same thing. Sheared gear teeth, Depending on design, there could be other causes.

Dave, our tractors have open differentials which means the tire with the least traction will spin...that's what that wiggle thing is all about

 

[diyDave]

Dave, our tractors have open differentials which means the tire with the least traction will spin...that's what that wiggle thing is all about

I was assuming the scenario above, front end jacked up, one wheel should go forward, one backward. In this scenario, I would still check the wiggling, or non moving wheel, as I have had it happen on a POS jinma (Rhino), it was a broken axle, and it was the non moving one!