Posted by JD Seller on September 28, 2013 at 19:21:56 from (208.126.196.144):
Have a customer that really got robbed today. He bought a JD 4430 this last week. He did not talk to me before hand about the tractor or any of its issues. It is jumping out of "D" range bad. It is not the linkage it is the shift collar and maybe the gears.
The seller told him it was jumping out of "D" range. Told him that he had the "new" parts just did not have the time to put it in. Seller handed him a new shift collar(#7) Cost $141.92. Told him it would not cost much to put in. (LIE,LIE!!!!)
Here is where the lesson starts. Do not speed shift the ranges (ABCD) on a JD quad range transmission and grind them. You will wear out the gears and shift collars.
The parts are not that terribly high. Usually under $1000 unless you messed up the B or A range gears. They are $925(#13) and $718(#5) each. C & D range are around $500 each. Usually it is "D" range that is bad. So usually the shift collar (#7), "D" range gear(#10) and gaskets, and some oil an your good to go as far as parts.
Now the fun part. You are looking at $5000 plus on the labor to replace these parts. Here is why. If you look at the parts diagram above you can see the range gears are on the pinion shaft. So to replace anything on the bottom shaft you have to take the differential out.
1)You have to split the tractor at the rear of the clutch housing. While you are doing this you need to support the cab or remove the cab. Roll the differential away from the clutch/engine.
2) Remove the rock shaft housing that is the top of the rear end.
3) Remove BOTH final drives/tires/wheels/weights
4) Remove the differential carrier
5) Disassemble the entire transmission as the pinion shaft is the bottom shaft.
I have left out many little steps but you can see that the labor involved is not small. I am not going to do the job myself. I am just not going to get that far into other people's stuff anymore. My middle son is thinking about doing the job. He has helped me for years in the shop so he knows what to do. I can/would help him but I am not going to do it myself anymore.
So guys if you are looking at a tractor with a JD Quad Range transmission make sure it stays in ALL the ranges before you buy it. It is easy to do just drive it and pull the tractor an then coast it down a grade. It will pop out if the collars are bad. If it is the shift linkage have them adjust it BEFORE you sign anything.
A Hi-LO clutch repair is cheaper ($2500 at a JD dealer) where the Range shift collars/gears can easily be $5000-7500 at a dealership.
The Quad Range transmission is a GREAT transmission they just are getting some age on them.
My guy is going to get a $4-5 grand education about this. HE signed a bill of sale that told him the range shifter was bad and he was buying it AS-IS. He could try to go after the guy for lying to him about the labor cost but it would be hard to prove.
So to the guy on here earlier this week on a Quad Range jumping out of gear. Check the linkage ASAP. Hope and pray that fixes the problem. If not then save up some money to have it fixed correctly or if you have a shop and some time do it yourself. The parts are not too bad. It is just a lot of work.
Like the old saying: "College is not the only place you PAY for an education"
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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