Recent content by grandpopduck

Hiball; I followed your directions; there was nothing in the holes except what you suggested . I filled the jack up with hydraulic oil tightened down the valve stem in hole 2. The jack did not work. I backed off the valve stem by about 1/8 inch ant the jack worked. so I cut a fine thread 7/16...

Hiball; thanks for the suggestion. I followed your directions, but the valve plug with the longer stem is so long that it would not engage the threads. So I used the shorter one in hole 2. Filled it back up and bled the system, but the jack still would not raise. since the shorter one still was...

Hiball, thanks for the information. The 2 "valve plug with stem" are of different lengths. one has a stem that is 2 inches long, while the other has a stem that is 2 1/2 inches long. In either case, if I put the "valve plug with stem" in hole 2 they bottom out against the 5/16" ball and do not...

HoldenHR1966; thanks for the reply. I also believe that this S4 is from the 1930s. When I flipped it over, 3 large balls [5/16 dia.] and 1 small ball [7/32 dia.] fell out. While up-side-down I hit the back of the hydraulic case several times; no more balls fell out. I have an instructions and...

930dreamer; I have taken it apart, fixed the leaks; and painted it. My problem is that the steel balls came out of the valve ports and I don't know which balls go into which ports. Also, I don't know how to bleed the system. Regards; Fred

2oolhound Thanks for your interest. Attached are 5 photos Showing my S4. Note that the serial number is C192140 not 0192140. Again, thanks for your help; I bought this jack over 40 years ago, and it has served me well. I would hate to lose it now! Regards; Fred

I have an early Blackhawk S4 jack [Model S4, Serial C192140] that I am attempting to repair. It had oil leaks and worked sluggishly. This jack precedes the S-4-1 and S-4-3. I have viewed 100's of internet pictures and have not found a match. It is all cast iron and has a domed top on the rear...