Can anyone tell me if it matters which way the black quadrings go on a 743 bobcat spool valve. The control valve is a 4 spool. If it matters does anyone know which way? And can anyone send me a picture of the control valve from the spring side of all 4 spool caps? No need to disassemble just a pic of the control valve from that side. That'd be very much appreciated, Thank You. [email protected] .
quad rings are thesame ineither direction, unless you have cup seals?
What mikebramel said.
thanks dude thats what i was thinking cuz they look the same in either direction, just thought maybe it matters. I know some do but wasn't sure on these.
Qaud rings are the same on all sides. U cup seals, not so much. > http://www.allsealsinc.com/quadrings.html
The last & only time I bought seals for the spool valve on my 743 the dealer gave me cup seals. Ed
do you have 4 spools? He told me they were quad rings, and mine look like quad rings too.
Bobcat did stuff like that, using different seals depending on serial number. Most confused they were
Those are quad rings right? Both sides look a little different from each other when you use a magnifying glass. I guess I'm gonna call the dealer and check with him.
Looks like a quad seal to me
Yes, 4 spools. Don't recall. If it had o-rings or quad rings in it. They weren't cup seals originally. Ed
do you think you can send me a pic of the caps. which is the rear auxiliary. and one of the caps is thicker, can you tell me which one. looking from the top of the rlief valves.
Might take a few days, the machine isn't easily accessed right now. Ed
The cap for the front aux. is .40" mine is removed for a pressure relief valve. It's the top spool. Ed
The two smaller caps, whiich are i think boom and rear aux. And one of the smaller caps is a bit thicker so it needs a longer bolt. Can you tell me which cap it is or spool looking from the top of relief valves, when you have time?
over the years bobcat used several different valve/seal combinations. orings orings w back up washers black quad rings orange seals green seals the orange or green seals are directional, back up rings are always located AWAY from pressure. on some valves you have to measure the depth of the counterbore to determine what the correct seal is.... typically when some dipstick installs the wrong spool seals and it leaks worse than it did before....