Mechanic say's this J.D. is a factory "FLAW"

Tx Jim · Oct 21, 2013

Zebrafive said:
Another drawing of the two stage clutch

Zebrafive
Please help my old feeble mind. I trying to envision how the trans pump drive shaft is powered on a single stage clutch. Spline shown in photo will be the pto/trans pump drive shaft(parts key #4) in the 2nd photo. I think if duke's tractor was really a single stage clutch as mechanic states that the spline would not be visible in the 3rd photo.

Zebrafive · Oct 21, 2013

Tx Jim said:
Zebrafive
Please help my old feeble mind. I trying to envision how the trans pump drive shaft is powered on a single stage clutch. Spline shown in photo will be the pto/trans pump drive shaft(parts key #4) in the 2nd photo. I think if duke's tractor was really a single stage clutch as mechanic states that the spline would not be visible in the 3rd photo.

There is a torsion damper with internal spines (bolts to the pressure plate). The hollow shaft is always driven since the pressure plate is bolted to the flywheel.

Part 7 in the exploded drawing, part 6 in the assembled drawing.
Since finding this drawing he MAY have a single stage clutch!

Tx Jim · Oct 21, 2013

This parts schematic of a single stage clutch/PP does not show the place for the splines that your photo eludes to.

Zebrafive · Oct 21, 2013

Tx Jim said:
This parts schematic of a single stage clutch/PP does not show the place for the splines that your photo eludes to.

You're correct, with no PTO or transmission driven PTO the transmission shaft is solid, so no need for hollow PTO shaft with inner transmission shaft. Hence you would not have the splines shown in the picture. I think the single stage clutch/pressure plate drawings I found is for the hydraulic independent PTO clutch. Where the PTO shaft (from flywheel, NOT the output) is always driven up to the hydraulic clutch pack

Now I am thinking either it has a two stage clutch assembled or adjusted wrong. Or at some point the two stage clutch was swapped to a single stage clutch, from maybe a parts tractor, to get it going. By someone that either did not know better, or was willing to sacrifice the PTO, to get the tractor running.

RickB · Oct 21, 2013

Zebrafive said:
Now I am thinking either it has a two stage clutch assembled or adjusted wrong. .

This pretty much has to be the case, as if it actually had the rare single stage clutch, the PTO would disengage with the transmission. If it had independent PTO , the control would be in a different place, and the OP understands that. There's waaaaay too much thinking and speculation going on here. It''s all but certain to be a screwed up double clutch. Pretty sad that somebody actually installed that clutch (apparently for $$$) then calls it a 'design flaw'. I don't claim to be an expert, but if the front disc on that double clutch assembly is the PTO disc, it's probably in backwards.