CK20 HST tranny issues

DK35vince · Jan 9, 2006

( One thing you may read in your warranty, and it's common in tractor warranties, is that there is a possibility that you will be responsible for paying part of the cost of the part. They term it something like a wear and tear thing. )

John,
That may apply to wear items like tires, brakes, belts, Etc.
But a coupler between the engine and transmission is expected to (and should) last the life of the machine.

Bob_Skurka · Jan 9, 2006

( ( One thing you may read in your warranty, and it's common in tractor warranties, is that there is a possibility that you will be responsible for paying part of the cost of the part. They term it something like a wear and tear thing. )

John,
That may apply to wear items like tires, brakes, belts, Etc.
But a coupler between the engine and transmission is expected to (and should) last the life of the machine.
)

Vince, I agree with you on this. There are normal items that are considered "wear and tear" items. Some folks refer to them as the "consumable" items. They would include oil filters, air filters, belts, fluids, hoses, tires and the battery. But I would not consider any part of the transmission, housing, coupling, etc to be one of those types of items. The "part" should be replaced without cost if it is under warrenty (perhaps a labor cost, if the labor portion of the warrenty is expired).

mathey · Jan 9, 2006

( The "part" should be replaced without cost if it is under warrenty (perhaps a labor cost, if the labor portion of the warrenty is expired).
)

Well, unfortunately, the labor cost in this case is quite large.

IH3444 · Jan 9, 2006

It could be something as simple as a batch of input shafts not properly heat treated, and quinched. The engineering design, and alloy of the steel shaft may be fine. I don't know if Kioti has it's own heat treating facility, or this is sub-contracted out. When I worked for the Navy, the group I worked in did the investigations for failures. Anything from rocket motor nozzles, tailhooks, Tomcat landing gear failures, jet exhaust/turbine engine, name it, we did it. Some failures were due to just a batch of parts not heated treated to "mil spec". We were one of the national labs selected to check the booster rocket steel alloy for the Challanger disaster in 1986. The material was exactly what it was suppose to be, right down to the heat treatment. This would be tough to prove without indepth investigation. With that few hours, I would hope the factory would cover the repair. Oh yea, and that's hive, not den!!! /forums/images/graemlins/grin.gif Oh lordy, they're swarming after me again..... /forums/images/graemlins/shocked.gif /forums/images/graemlins/grin.gif

lcisled · Jan 11, 2006

OK, lets say it is a batch of shafts that were not heat treated properly.
This happened to mine at 200-some hours, and Mathey's at 450 hours. How many CK20s are out there with very few hours on them? What if it took an owner over 3 years to get enough hours for the coupler to strip? Or more years to get enough stress on them that they strip out?
Then they are stuck with the whole bill.
How would anyone know if they got a tractor that had a bad coupler?
I did not abuse my tractor. I believe that Mathey did not abuse his either.
I am almost glad now that it did happen to my tractor. I would wonder when it was going to happen.

KiotiJohn · Jan 12, 2006

( John,
That may apply to wear items like tires, brakes, belts, Etc.
But a coupler between the engine and transmission is expected to (and should) last the life of the machine. )
Oh, I agree that the part should be replaced without charge, but I'm saying that the warranty does state that some use and wear could incur a charge upon replacement. I don't think this has really been enforced, but it covers the MFG if they need it.
I was not talking at all about normal wear items such as tires, light bulbs, oil, etc.
I don't think that I can agree that all those major parts can't wear out either, but should last a very long time without problems.

John

pilonidal · Jan 14, 2006

My worry /forums/images/graemlins/crazy.gif light is flashing now, I have to say. Bought mine 18 months ago and I have 120 hours on mine. Will mine make it to 200 hrs? That thought is in the back of my mind now. Doesn't mean a thing , but I purchased mine from the same dealer as Mathey. Am I in the same boat? It just hasn't hit that berg yet! Sigh, time will tell. /forums/images/graemlins/crazy.gif /forums/images/graemlins/crazy.gif /forums/images/graemlins/confused.gif

TractorLegend · Jan 14, 2006

Thought spawns invention---one could copy a stronger forged part and sell it to those with the weak part...

IH3444 · Jan 16, 2006

This depends of course on what exactly failed. Was it the shafts out of the hydro, or the coupler. There are 2 ways of making splined couplers. Either cut the splines in with a stepping broach, or the most likely manufacturing today in the modern world. Sintered powder metal, compressed under high pressure, with heat, in a mold. If possible to pin the coupler together, that would be an option, if out of warrenty. This of course depends on whether you can gain access to the coupler from an access plate. Hate to see the same coupler fail in years to come again due to either engineered undersizing, or another faulty metallurgy process. Bit of a uncertainy. I agree that a beefier part, that you know will not fail gives the owner piece of mind, and removes any doubts about the reliability of the coupler.