DAVID BROWN 770 HYDRAULICS

DALE METLER · Feb 4, 2014

I AM HAVING TROUBLE WITH THE HYDRAULIC SYSTEM ON MY DAVID BROWN 770A. WHEN I GOT THE TRACTOR THE THREE POINT HITCH WOULD NOT LIFT AT ALL. I CHANGED ALL OF THE FILTERS ( HAD TO REPAIR THE SUCTION FILTER WITH NEW SCREEN) BLED THE SYSTEM AND SHE WORKED FINE FOR A YEAR OR SO. THEN IT GOT SO IT WOULD WORK OFF AND ON. NOW IT ISN'T WORKING AT ALL. WHEN I TRY TO BLEED IT NOTHING COMES OUT OF THE BLEEDERS. I THINK THAT I CAN HEAR THE PUMP BUT IT ACTS LIKE IT ISN'T PUMPING OR SOMETHING IS PLUGGED. ANY SUGGESTIONS?

RGMartin · Feb 4, 2014

http://www.dbtc.co.uk/index.php?module=Content&func=view&pid=182

Good info at the above link. It doesn't cover everything, but does cover the most common stuff.

The other common thing, if you pull the plug on the filter/strainer housing at the bottom of the transmission, do you have oil or ice? Oil and filter is good, but if you didn't put on new gearshift boots, you have water/ice in the bottom of the sump again.

DAVID BROWN 770 HYDRAULICS

DALE METLER

New User

RGMartin

Well-known Member

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