so i need to put in a missing bushing on the dipper arm / and another missing bushing on the bucket itself / so is there a procedure to drop the bucket that most efficient / i got that part on the end that has the quick hook to pin ./or is it called a qui ck coupler so if im correct lay the flat of the bucket on level surface / pull the one pin off then move the arm so it unhooks from pin #2 ???
I curl the bucket out until it is balanced hanging from the pin in the hook, this unloads the pin through the stick. Mess with it until you get it where there is no load on this pin and it will come out relatively easy. The stretch the stick out and put the teeth on the ground, lay the bucket open side down and pull the hook out. To pick it back up, put the hook back under the pin, pick it up and curl it until the holes in the bucket are just above the holes in the stick. Maybe 1/2" from being aligned. Put one foot on the teeth and push down until it lines up, then stick the pin through and put the lock rings back on. With practice,(and a greasy pin), it becomes easy. I can swap buckets faster than I can type how to do it. (maybe cause I suck as a typist?)
Exactly what Mitch said. Also if you have trouble getting the pin back in, use a flapper wheel or grinding stone on the ends of the pin (near the snap ring) to smooth out the mushrooming from previous pounding during removal and installation (usually helps to run a flapper wheel in the mounting holes of the bucket as well). Grease all holes and the pin up really well and the pin should slide in and out no problem.
ouch ok pin came out so easy no snap ring but a hole and a spring pin was installed on this machine but hey big problem there's suposed to be 4 bushings in the pivot i got only got 2 ( the 3 1/2 inche ones) and they drifted all the way in or were pressed all the way in to a point that on one side the bushing is only in the coupler arm so the arm wiggles some in the dipper arm / so i treid to bang them out // oh boy tough going / also one bushing has a fracture going across it as i look into the hole .this may not be helping it ass i pound away . one side bushing in by a 1/4 and the other side bushing all the way in as i found it how hard is it to cut thru a bushing / sawzall/ grinder / torch i plan on trying to cut the bushing in the slot right of the zerk so the arm will fall out the i could hammer the one side in to fall out getting torch into hole gonna be tricky? if i measure across the whole assy it comes to 9 3/4 inches i added up demensions of all four bushings required it come to 9 1/2 that leave 1/4 for the gap for the grease to get in at the zerk also the bore of the center pivot arm is bigger than the bore of the hole in arm ? that bushing thats all the way inside is loose and giving me greif when i hammer away at it to scoot the other one out the other side
If it is a bushing , you can weld it at 12 , 6 , 3 and 9 oclock and it will more than likely fall out the weld draws the metal in. When installing the new bushing freeze it and heat the fixture it goes in , and heat it slow. The Case quick couple is one of the best I've seen as far as simplicity.
ok my mistake the arm bushing sits in the couple bushing like so . but it may lead to my same original question and problem is that how do we keep the longer bushing from sliding in like the problem i got now . the bushing may not so snug and may drift in with use . i see other bushings on this machine that have tack welds on them to keep them moving this is a old machine ?
those bushings should be a press fit. I invested in tooling and a portable press to complete my most recent rebush project on my sons 9040b trackhoe. It saves SSSSOOOO much grief on craking bushing, mushrooming pins, or bushings, not to mention that it seems to go faster. The last bushings that we pulled in were 5.50" o.d. we built up and rebored the boom dimensions to assure us a press fit. We did bore the opening to allow a .001" clearance per inch of bushing diameter.
yes but im just dont want one of them moving like the old one did and fall out of the dipper arm bore .. in the last pic is how they sit if there were installed so there's a 2 inch gap in the center i wonder why the original one slid in? on the one side
this is how i found it when i pulled the pin and the bucket off . those are fresh marks when i tried to pound it out the other way the bushing slid in or somebody did a half arse job on trying to replace and left it like that im going to resort to the torch removal of the other on the other side the one in the pic is loose / fall right out once i pull out the other and drop the center arm / crapola so while that bushing was in like that the pin beat up the bore for who knows how long , i had a hunch something was amiss since the sway and slop of the bucket was way off loose
i got them out . wow talk about wear lucky the grinder fit in the slot to cut off the offending part