BD hydraulics

Started by merlin, July 10, 2015, 04:30:36 PM

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merlin

July 10, 2015, 04:30:36 PM
Well, I got my new 1946 BD home last night. One thing I noticed was when the blade is up, it will slowly (very slowly) start to go down. I don't see any big leaks on the cylinders themselves but I know the front mounted hydraulic pump leaks. Is this leak causing the blade to start dropping or is it the Heil control lever? It has a Heil HT35 blade set up. Almost seems like the control lever for the hydraulics is loose and moves easily between up, down, and float. Could the bouncing around while driving shake it loose to where it starts lowering the blade. I would appreciate any ideas. Thanks.

Blake Malkamaki

#1
July 10, 2015, 05:09:42 PM
It could be leaking internally inside the cylinders too. Very common with old hydraulics.
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merlin

#2
July 10, 2015, 05:43:59 PM
Does the weight of the hydraulic oil make a difference? Previous owner said he was using AW32 or RO. Thanks.

Bob

#3
July 20, 2015, 02:18:46 AM
Could try turning in the relief valve a turn or two.
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