Brake differential valve on my daughters 240 is leaking resulting in fluid loss from the rear reservoir section. Have not examined the valve closely yet but I an assuming it a leak out of the switch. I understand that the switch housing is not designed to form the pressure seal and that this most likely is a failure inside and the fluid forces out at the switch. Or less likely there may be a leak at one of the line connections.

Question: Is it practical/possible to rebuild the valve with all new internal O rings etc while leaving the valve in place and thereby avoid having to disconnect the 6 lines? Or is it just as easy to remove it entirely and install a new one. Cost of parts is not my concern. I just want the easiest fix.
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David Hunter