Don't mean to highjack this thread although it appears youall finished with it 6 years ago. Have a question about the 4 cylinder 4000 Ford tractor. Would the rear end housing and differential off this 4000 bolt on to a 1962 Ford 861? At least the center section of the 4000's rear end appears identical to the 861's from that owners manual that was posted in this thread? My 861's trumpets look different but maybe they would bolt on to the 4000's center section if holes were re-drilled. Would the shaft from the 861's transmission housing plug onto the pinion of the 4000 differential? Wanting that diff lock from the 4000 in my 861 to use for dead weight tractor pulling on cement. My alternative is to buy another 861 rear end and weld the differential parts together so they can't move....but not sure I would be able to make any turns with the tractor in that condition. Another question is was there ever a sherman step up tranny made for the 861?
And regarding the 4000 diff lock; it's what's called a mechanical diff lock vrs the other type which is called a hydraulic diff lock. The hydraulic type although hard on driveline components can be engaged once one wheel has already started spinning while the other is at rest. A mechanical diff lock can only be engaged when the two wheels are turning at the same speed(before you get into traction trouble) and its the continuing difference in traction that holds it engaged as that spring that is stretched when it is engaged will pull the mechanical components back to the resting/normal position once the traction and thus speed of the two axles becomes equal UNLESS you continuously hold the pedal down with your foot.
And regarding the 4000 diff lock; it's what's called a mechanical diff lock vrs the other type which is called a hydraulic diff lock. The hydraulic type although hard on driveline components can be engaged once one wheel has already started spinning while the other is at rest. A mechanical diff lock can only be engaged when the two wheels are turning at the same speed(before you get into traction trouble) and its the continuing difference in traction that holds it engaged as that spring that is stretched when it is engaged will pull the mechanical components back to the resting/normal position once the traction and thus speed of the two axles becomes equal UNLESS you continuously hold the pedal down with your foot.
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