case david brown 885

grudfarms · Jan 21, 2011

i removed and rebuilt the selectamatic control valve, when i reinstaled the valve the three point lift raises on its own even when the spool valve is pushed up by the control lever, but will not lower untill i loosen the bleed screw on the piston side after i turn the tractor off.

RGMartin · Jan 21, 2011

When you say rebuilt, what exactly did you do to it? I wasn't aware that any replacement parts were available for the valve chests. Last time I tried to get a spring and a couple other small bits, Case wanted to sell me a whole unit.

Did you just take apart and clean? Lots of springs and plungers to get back into the right place.

What were the symptoms before you took it out?

Do you happen to have the rate of lowering screw cranked all the way in?

Does it behave the same in all three modes(depth. height and TCU)?

grudfarms · Feb 7, 2011

i didnt exactly rebuild the valve i just cleand and replaced the parts. every valve and plunger was stuck in there.

every thing when back in there right places i had a breakdown sheet.

the lift didn't work at all befor i removed th valve assembly. oil would never make it to the piston.

i adjusted the lowering screw in and out still the same thing.

it does the same thing in all three modes.

case david brown 885

grudfarms

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RGMartin

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