Nice looking Jack you have there, If you could get me the Diameter of the Ram i might be able to cross reference to find the model and tonnage being the tag is missing. After we figure out what the model number is i can price you a rebuild kit if you desire, They're actually not too much money. Meanwhile look for some stamping, as this is how they break down D6800 is a 4 ton, D7200 is 1 1/4 ton, D7400 is 1 1/2 ton and D7600 is a 2 ton. Don't let the size fool you, It might only be a 2 ton as they made things to last back then.
IF you look at the last picture of the Ram, its a little oily, but the Tank nut has a '7602' stamped into it. I guess that makes it a 2 ton....
measured, it has a max 24-1/2" lift, and a min 4-1/2" clearance
Hiball, I'll measure out the piston tonight, and get the dimension posted, to verify the stamping and start the parts process.
after a good cleaning with a little oven cleaner, most of the crud and oil came off. this jack is actually in fairly decent shape for its age. the few problems I did notice however are these...
1. one rear caster was replaced with the incorrect one. I'll have to find a replacement. I believe Colson makes cast iron in this size, with a minimum 500# rating....
2. the release valve on the handle, and the handle head, are very loose in the way they fit together.
3. the handle pivot bushings are sloppy, I'll have to measure those up and get two new ones.
4. obviously the piston dust cover is bent...
5. the tank filler nut was replaced with a brass nut, which was then rounded off by a set of pliers
6. the lower handle portion where it slides on the rear piston actuator is fairly sloppy, I'm not sure if this is part of the design or not, but it takes at least 20 degrees of movement in the handle, before it starts actuating the piston.
7. both rear caster crown nuts were loose enough to be able to re-tighten by hand.
I was thinking this is a mid to late '40s model because of the cast aluminum handle and release nut...anyone care to comment?
