Posted by Kevin Clause [99.44.200.253] on Thursday, September 19, 2013 at 18:30:08 :
In Reply to: Watco 303HC Floor Jack Help needed. posted by Paul (in NY) [12.64.114.66] on Thursday, September 19, 2013 at 15:44:51 :
Well Ok, I just made it up but it should be fairly accurate.
If it barely lifts but holds its position the inlet check or the relief valve could be your problem.
If it also drops it could be the needle valve. It needs to be refinished on a grinder. Sand papering the ring away doesn't guarantee you will retain the true cone shape. It can look good and still not seal.
If you do coin the ball and seat be sure to use a brass drift so that you do not damage the ball. If the ball is damaged replace it. they only cost pennies.
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