I installed the varidrive belt last night and had to have my wife help me get the motor/drive assembly back into the machine this morning, then I had to do some other Stuff.
This evening I started doing the Clausing Cringe..bleeding the hydraulic lines and pump for the Vari Drive..and I got the thing up to about half speed..and then it went limp on me. Pulling the lines..I found that the pump wouldnt pressure up very much.
So I pulled the varidrive pump and broke it down..and sure enough..the o-rings and seals had failed. Which is not terribly surprising, considering that it was made in the mid 1970s, and hasnt been run for the past hummm...10 yrs or more.
I had all the o-rings, but the piston ring ..what I thought was an o-ring, inside the bore..is actually a cup seal..or a backless "O-ring" that has a skirt around it that faces the pressure side of the piston and opens up and seals around the piston. about 1.25 x .125x .125
I dont have one. And Im not going to find one at the AutoZone. I might...might find one in Bakersfield..but its one Ive never seen before. Laying in the groove, looked like a square profile seal..but is open on the backside and it had failed enough not to allow enough pressure to build up in the pressure side of the piston/cylinder of the drive controller.
Question...think an o ring will do the job? Or should I hunt down the proper seal next week?
Obviously Im not going to get the lathe in full operation until I replace that seal. Tried to gentle it out..and it started to disintergrate..so it was well past time
Any suggestions? Or should I just bite the bullet and wait until I find the proper seal?
I know some of you have rebuilt Clausing hydraulic vari drives before...so I thought Id ask
I am the Sword of my Family and the Shield of my Nation. If sent, I will crush everything you have built, burn everything you love, and kill every one of you. (Hebrew quote)