I am working on an MF135 (1974 production) and need a little help relating to the PTO. I went in to diagnose an inactive lift. In the case I found about 14 .48" roller balls that probably came from a previous PTO output bearing. One of these had found its way imder the Hydraulic pump and had damaged the mechanism extends below the pump. I am replacing the pump but here is my question: This tractor has a ground speed PTO and a Motor speed(clutched) selection. The spiral lock ring was loose on the drive shaft and partially damaged and the ground speed gear had slipped back onto the drive shaft and was slinging around on the shaft. I can reinstall the gear over the inner gear attached to the drive shaft but I cannot see what would hold it in place. The spiral ring would hold the inner gear in place but I find nothing to keep the large gear from slipping off again. I don't find enough detail in the service manual to help. Can someone who has been in the same place a few times shed some light?
- Thread starter Wareagle
- Start date
Dieseltech
Well-known Member
- Location
- Akron, Indiana
The diff parts list I looked at shows the ground drive gear fits over the hub gear on the diff input, and the spiral ring fits in the groove on the hub to hold the gear. Maybe the hub has damage to the ring groove?
I took another look at the Ground drive gear and the groove that the spiral ring fits into. The groove is still intact on the drive and the ground speed gear has a machined area at the base which does indicate that it was intended to be held by the spiral ring. The ring that was destroyed may have well been the wrong one. Can you give me a part # or some information from the parts data you have that will help me assure that I get the right spiral ring?
Hard to imagine why someone would have been into this area of the tractor for repairs etc but in 40 years who knows. Tractor is in excellent shape and was probably only used to pull a bush hog.
What lube or hydraulic oil will work in the MF 135 Gear and Hydraulic boxes?
John Deere D
Well-known Member
Several pics.
Bob...
Bob...
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