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Thumb problems on a komatsu

89.ho.ss

Well-Known Member
Joined
Dec 21, 2014
Messages
77
Location
eastern CT
I have a Komatsu PC 75 uu-2. I bought a thumb for it and I installed it I have all of the hydraulic lines heading out to the end for the thumb in the pedal inside. The machine used to be set up for a rock hammer. Now I am finding that if I go to the left with the pedal it is high speed into the right of the pedal is low speed on the same hose. Does anyone know how I can make it so it flows both ways
 

89.ho.ss

Well-Known Member
Joined
Dec 21, 2014
Messages
77
Location
eastern CT
I figured it out there was supposed to be a switch it was removed. So I put the line to the valve body and it all works
 
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