Since I was off work last Friday I took the clutch out of my 128. I have a few questions. When I bought this tractor I was told the original engine was damaged beyond repair and this engine came from a 124. I noticed while looking up the parts diagram of the clutch for the 128 that my assembly was missing #20 (spacer spring). Thinking maybe the clutch assembly came from the 124 as well. I looked at the clutch parts diagram for the 124.
The components are pretty much the same other than the drive shaft, and clutch release lever and the rod/spring components connecting to the clutch release lever.
The drive shaft is pretty worn in the area the slotted pressure plate rides on the drive shaft. The sides of the pressure plates that come in contact with the friction disk are beveled. Is this correct or are they supposed to be flat?
The drive plate assembly seems ok, but should probably replace the bronze bushing and the three coiled pins since they have wear on the sides from the friction disk. After laying a straight edge over the back side of the plate over the three pins I see the plate is a little tweaked around one of the pins. I'm sure this can be straightened and have years of good reliable service. I did not have any friction disk springs on the drive plate. I read in the manual the QL series has one spring on a longer pin and was not clear on the 128/108 series. All three pins are the same size. Am I suppose to install one or three?
The coupling connecting the drive shaft to the transmission seems to be ok, but one side where the drive shaft is pinned to it is quite large and the shaft and coupling seem to act like a wobble socket. Is this manufactured this way to allow movement for the tractor frame twisting?
The teaser spring dimensions per the manual are the right height, but will replace it anyway. The clutch loading spring measured shorter than the manual says is acceptable, so that will be needed to be replaced. The throw out bearing seems gritty and should be replaced as well.
The spring pin on the transmission end gave me the most trouble. I found the pin was actually sheared. After some time I was able to get the pin out. A little disappointed to find the transmission shaft was wallowed out and will need to replace the shaft/gear.
Does anyone know the difference between the 124 and 128 drive shafts? I’d assume since the 128 has the spacer spring, and the 124 does not; the pin hole holding the clutch loading spring must be drilled further back away from the engine?
Looking through the service manual and the parts look up, I did not see a separate drive shaft for the addition of a creeper drive. After seeing my drive shaft, if a creeper is installed it looks like there is a pre-drilled hole and all you need to do is cut the shaft 1/4” from the center of the hole to couple the creeper? Also, is there a separate manual for installing the creeper and cutting the drive shaft?
This is my first gear drive, and I want to make sure everything is correct before I put it back in.
