Rod, if you're only going by the lack of a differential lock pedal to determine that it has the single reduction rear end, then that might not be accurate. My '73 4000 has a double reduction rear end, yet it lacks the differential lock pedal, as well as the hole in the right side axle trumpet for the shaft, as well as the internal differential lock parts, as the differential lock was not standard on the '65-'75 4000 series, it was an option. Looking at the 4600 parts diagrams, the differential lock appears to have also been an optional on them as well, as it lists 2 different part numbers for the right axle trumpet, one with diff lock, and one without.
Re: 4000 Ultra Hi Crop in reply to Sean in PA, 01-11-2013 11:41:16
That may be... but I've never seen one without around here. The housing looks to me like the lighter housing. PTO housing also appears to be for the mechanical PTO... and the shift lever for the PTO is clearly the sliding collar variety of the light rear end rather than the wet clutch control valve.
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