kRM1976

Member
Was chopping corn with the 7520 and lost the four wheel drive all i have is power to the rear and it is worhtless! Any ideas? Thanks
 
A coupler to one of the pumps broke ? I have no idea about anything on your machine, except it may be green. The pros should be along any time now.
 

Have you inspected frt axle drive shaft??

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Another possibility is failed pinion shaft/gears(parts key 16 & 11) in frt differential

28756.jpg
 
Do I have to split the tractor to check the front differential for a broken pin or gear? I don't hear no noise up there. Finished chopping with it today with no 4x4.
 
No you won't need to split it ,,jack the front end up and see what's turning and what is not.. the front end will need to be dropped out from under the frame if that is what happened...
 
Remove the oil drain plug and look for lots of fileings, also use a magnet. If drive shaft splines and such are ok you have an expensive job ahead .
 

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