MaverickM23
Member
Working on replacing the PTO and trans clutch on my early 4020 sn 77769. PTO was shot, both plates warped, disk shot, and two of the fingers were broke. Got all new parts, fingers, disk and plates for the PTO. Got a new disk for trans but both flywheel and back plate checked out fine. I also bought a spring kit to replace all the springs and heres where my question is. According to the manual I am using, SM2039 it states outer spring should be no less than 3.0625 and inner should be no less than 3.3125. The springs that were in the tractor were outer 3.220 and inner was 2.910. So I bought all new springs and their measurements are outer 3.340 and inner 3.60. I was at the dealership today and talked to the service guy who looked up in his manual and it says that the inner should be shorter than the outer, like what I took out of the tractor. So which ones are correct? I even looked up the specs for the parts online and the sizes match the ones I got in the kit. I had it all together on the bench and the PTO disk is very tight with it all bolted together it barely slips at all and I have the adjustments pretty close. Any ideas did they change the inner spring or do I have the wrong manual for my machine?