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. Dieselpro12@gmail.com.
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Quad rings on a 743 bobcat
- Thread starter Max1985
- Start date
mikebramel
Senior Member
quad rings are thesame ineither direction, unless you have cup seals?
willie59
Administrator
What mikebramel said.
willie59
Administrator
Qaud rings are the same on all sides. U cup seals, not so much. > http://www.allsealsinc.com/quadrings.html
Bumpsteer
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The last & only time I bought seals for the spool valve on my 743 the dealer gave me cup seals.
Ed
Ed
willie59
Administrator
Bobcat did stuff like that, using different seals depending on serial number. Most confused they were
willie59
Administrator
Looks like a quad seal to me
Bumpsteer
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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.
Bumpsteer
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Might take a few days, the machine isn't easily accessed right now.
Ed
Ed
Bumpsteer
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The cap for the front aux. is .40" mine is removed for a pressure relief valve. It's the top spool.
Ed
Ed
crewchief888
Senior Member
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....
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....