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mm 670 very weak 3 point

S

sam c

Member
Greetings,

i just got my 670 super back from mechanic. He fixed oil leaks in hydaulic controls but now my 3 point lift is very weak. It works fine with NO weight but it will not lift me.

before repair would lift big bale quickly so l am sure pump is ok. Is there an adjustment i am missing?
 
Off hand, the only thing I can think of is if the valves aren't synchronized and are leaking when weight is applied.
 
Synchronization of valves is not something i have heard of before. How does one fix that? Is it in the service mamual?
 
This is probably dumb but remembering back nearly 50 years there's a lever under the seat that adjusted the flow (but likely not the lift capacity if it was moved clear to one side)
 
Synchronizing the valves is usually done when the valve body is apart. There is a separate manual on the Tel-O-Flo systems for that purpose. R.D.F. may have some more ideas as well.
 
It has the newer system. If it was not assembled correctl could the oil be flowing through the valve instead of out to the lift cylinder?
 
It could easily do that, you will need to follow the flow pattern and then need correct the issue to direct it where it needs to go, good luck, Dale
 
northwest missouri - st. Joseph

being the 670 super I think it has the newer hydraulic system

I have the service manual and provided to mechanicbut I do not know the detail in the manual. A specific hydraulic manual if available might have better references
 
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