Hello All. Great site, lots of great info. Early 1990s EX100-2 that is throughly thrashed. But still runs and functions. Working on trying to tighten things up a bit. I’ve searched and cruised the threads but couldn‘t find info on pin bushings for the dipper stick end of the boom. The bushings in the stick are good and tight, pin is good. Bushings in the ears of the boom are gone, departed, nonexistent. I’ve mic’d the bores and they’re still surprisingly round. Will likely require welding and a line bore. The boss for the keeper pin and clip got busted loose and need to be welded back into place. Ive tried to load parts diagrams but have not succeeded. Could someone please hit the Easy Button for me and tell me bushing part numbers? Many thanks in advance!
Per the parts catalog, the only bushings in the boom are at the foot end and at the (2) boom cylinder rod mountings.
the house does not have bushings on the JD120, just the end of the boom and the cylinders as mentioned above. I got the house welded up and line bored, replaced the bushings. you can follow the thread from here: HeavyEquipmentForums
you probably need the 3051399 bushings. Here is a thread about a 120-3 HeavyEquipmentForums That was the same part for the JD120 This is where I got mine for pennies on the dollar. A little scotch Brite and good to go. https://www.ebay.com/itm/2552171447...sOsSk2dvzAAhJE2grJ4FXhXA==|tkp:Bk9SR4iU0NL1Yw
Thanks Diesel Dave and Skyking1! Sorry I didn’t get back to you. Had to unplug the family and get off the grid for a few days! I’ve had a local guy look at the upper end of the boom with me. Looks like the “ears” have likely been bored out and had bushings installed. Those are now gone. Going to have the local machine shop spin me some new ones and I’ll try that. The lower or foot end of the boom is worn pretty badly but nothing like the top end. I’ll tackle that next. Thanks again for the info!