john deere 990 hydraulic problem loader "jerky"

   / john deere 990 hydraulic problem loader "jerky" #1  

cd1168

New member
Joined
Feb 17, 2012
Messages
1
Location
houston, tx
Tractor
none
anyone deal with the jerky issue on the 990?

the bucket, when i want to lift, goes down for a second then goes up ... i am thinking a leak or suction issue ... i would rather fix it myself than take it to the stealership

a while back a branch tore the hydrualic filter assembly apart undernath.. bending the bracket.. i put it back together, but maybe not good enough??? could that area cause a suction issue?

i need to check the filter screen undernath for clogging. also i heard that the suction hoses can be an issue allowing air to get in

only problem, i am not sure i know where all the hoses or ports are.. does anyone have a schematic or an idea about all possible areas i need to look for

there are alot of parts on thios machine and i am not a mechanic so i am a bit lost

:)


thanks chris
 

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