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580CK second look, second thoughts

whf4 ยท 2010-01-30 20:46

Hi, All, Followup to prior thread. forgot to bring the camera- my bad. By the Serial No its a 1969 CK. 10 degrees F last night in Akron - the 188 started immediately with 1 puff of ether. And restarted promptly. Drove it around, goes through all the gears just fine. The linkage on the shuttle shift is sloppy as can be. The manual throttle doesn't stay put but sags back to idle. Mechanical brakes useless and will need to be redone. No measurable effect at all from stomping on 'em. Pretty stiff- they have the return springs, but won't return Hats off to Phil and to the others- yes indeed the right loader arm was welded in the distant past. The paint has flaked near the weld of the crossbar of the left side loader arm, which makes me suspicious of a crack or an incipient failure. Alternator no good, or maybe voltage regulator. Wouldn't really know as the only dashboard gauge that works is the oil pressure. (about 60). Boom cylinder leaks at the gland. Not a lot. Small puddle hydraulic fluid under the hoe spool valves. The hoe seems pretty good, after playing with it a bit I am less worried about the swing frame and tower. The frame -if that's the right word is totally straight and seems to have bushings - I have seen pics here where the swing frame doesn't seem to be bushed or its been beaten to death so the bushings aren't visible. When you roll the bucket the loader arms rack -ie the one on the right drops a ever so slightly and the one on the left raises ever so slightly. I cannot figure out why that happens- mechanically, unless one of the roll cylinders is trashed and is just following along, rather than pushing. The bucket will pop the front wheel up, no problem. The stabilizers will pop the back wheels off the ground, no problem. The hoe will pop the back wheels off the ground, no problem.... unless... unless the bucket has the front wheels off the ground at the same time. If the TLB is sitting on the loader bucket and the two stabilizers, the hoe cannot jack the rear end any higher. If the stabilizers are retracted, and the front wheels are still up in the air held up by the loader bucket, the hoe cannot push the rear tires off the ground. If the stabilizers are up, AND the loader bucket is up, the hoe pops the rear tires off the ground like a jack-in-the-box. This is what i don;t get. If the loader bucket spool valves are all centered and neutral, the position of the loader should be irrelevant, no? The hydraulics to and from the loader should be isolated form the rest of the circuit, if I understand it right? It shouldn't just be a weak pressure relief valve in the hoe boom cylinder circuit, because then it wouldn't be able to lift the wheels up, ever. Obviously there is something I don't get, or the hoe doesn't work right. Phil, I couldn't tell if the shuttle shift is a Rockwell or Twin disc- the ser # did not have a letter after. Maybe not an issue on the CK? Pretty much all the pins on the buckets are pummeled such that they won't hold a retaining clip and have been bored so you can drop a hardware store bolt though to prevent the pin working its way out. The ram/pin on the backhoe bucket seems pretty loosey-goosey, side to side, up and down. So. pretty much works, pretty confident that the engine is good. Definite have-to-fix list alternator $150US brakes $unknown- probably no more than $600, maybe a lot less. boom cylinder $ unknown; worse case is several hundred, best case is about $40 Missing L floorboad, as PO has to recharge the battery as the charging system is NG. Price firm, no wiggle. There are other hoes from a similar vintage (a 555, and a 3500) in the area, for less. will look around thanx for opinions!

Replies4
  1. #1whf42010-02-01 15:40

    Cartoon of what it won't do! Here's a cartoon of what it won't do:

  2. #2hammerdwn202010-02-01 17:25

    id look at the other machines too. i think youll be sinking more money into this Case than its worth. maybe the broken loader arm has something to do with the bucket racking also

  3. #3Phil2010-02-01 21:09

    Good advice. I think if I was looking for a 580CK model, I would stick with a direct drive model. Torque converter models are getting harder to get parts for. The diagram shows a type of lever, more effort required to lift the machine with the bucket as a pivot point. I think that's one of the things that made the Case 580CK so famous was it's ability to move itself around with the hoe(with the bucket down). Hoe valve spools are notorious for leaking and there are many other seals to leak in that valve assembly. Phil

  4. #4MMH2011-12-18 00:14

    Is direct drive the synchronized shuttle w/ 8 forward & reverse gears?