Farmall 400 hydraulics (live)

wallacedw

Member
My hyd pump groans/growls when lowering the hitch/implement but there is no noise when raising it. Any ideas on what it is and how to fix it?
 
Check for viabration of parts against other metal parts as it is happening.
Also the check valve in the lift cylinder may be wearing out. (it prevents deadly dropping of the hitch, and is located on the outlet of the cylinder, in the fitting. JimN
 

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