blade controls
blade controls
on my 350 i have the 6 way blade and have replaced the o-rings for the spools 3 times already and the same one keeps leaking. if im thinking right as the valve control is bolted in place its the one on the bottom next to the pressure valve .
1969 jd350 crawler dozer
My guess would be the bore is worn out. Deere used to make oversize spools for the two cylinders in about .003 over, so it does not take very much wear for things to not work.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
I agree with with Ken and Lavoy.
Many hydraulic repair shops can still repair worn out bores /spools. I just had the control valve on my 350C dozer repaired by the local Cat dealer. I'm not 100% sure on the procedure, but i know they re-chrome the spool itself, and then hone out the valve body to match the new diameter. Was much much cheaper than trying to buy a new control valve.
Many hydraulic repair shops can still repair worn out bores /spools. I just had the control valve on my 350C dozer repaired by the local Cat dealer. I'm not 100% sure on the procedure, but i know they re-chrome the spool itself, and then hone out the valve body to match the new diameter. Was much much cheaper than trying to buy a new control valve.
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