If anyone has any knowledge of this machine/repairs and servicing on it, please feel free to jump in on this. I started a thread about the turntable clunk, but I've figured that having a thread directed toward posting images of the restoration process would be easier for others to find while searching forums. I've come across other E120B related threads so I know there are others on HEF with knowledge to share and may care to learn as well. Below are a few Images of the machine. Pictures are worth a 1,000 words... Photo 1 is the grease seal on turntable Photos 2&3 are the left pilot valve Photo 4 is one of the serial tags on main hyd. pump.
Main Hyd. Pump serial tag. As you can see, not a Caterpillar pump, Japanese writing. Grey market :dizzy
1.)Japanese jibberish 2.)Console my father and I replaced along with an oil pressure sensor. Water temp is the only gauge that functions:beatsme 3.)Serial Tag View attachment 96585
You can clean up the bearing and install a new outer grease seal. Not a fun job but dooable, needs to be very clean and then seal glued in. Look inside at the greaes in the trough for oil or water on top of the grease. Should find a cover to take off near the base of the boom were grease is added. The best way to check the big bearing is by lifting the tracks off the ground then letting them down. Measure the movement of the two pieces of the bearing, must be less than 1/8" The control valve plungers cam be replaced or resealed. Be carefull to get them in the right places as they aren't all the same. Later Bob
Machine was sold in Jan 1990 in Hiroshima, Japan. Because of that there is no service history on file. There should be repair kits for the pilot valves, seal is cheap but time consuming to replace.
Dipstick from the swing motor....oops. Bone-Dry and some corrosion, any idea? Any idea how much fluid I need to dump into the filler neck?
As for the swing gearbox, find a piece of wire that's longer than the dipstick and stick it in the tube to see if there's any oil in there. It could be just a 1/2" below the dipstick, could be bone dry, but at least get an idea of how much is in there before you start pouring. The joystick valves, geezzz, them be a mess. Here's a thread that might help you rebuilding those. Use caution though, mark everything and note where parts came from, as mentioned previously, those parts inside won't swap around to other locations. > HeavyEquipmentForums