3 of the 4 control levers/valves on my dumper are leaking where the lever goes in to the valve body. Can these be disassembled and o rings replaced or should I buy new valves?
Simple answer is yes just pull the spools out and there are o rings inside Bit of a job but simple enough3 of the 4 control levers/valves on my dumper are leaking where the lever goes in to the valve body. Can these be disassembled and o rings replaced or should I buy new valves?
.........the shaft bit is worn. Is there anyone that reconditions them?
clean 'em with some carb cleaner to get 'em spotless and try some Devcon/Belzona/JB Weld/Araldite plastic metal and reshape them carefully (lathe ideal, but I'm sure you could get them pretty fair by hand with some time) ... Mog's solution'd be best by far, but the plastic metals are machine-able and have achieved some amazing repairs with them over the years .... and I mean amazingIf it was me I’d float a bit of brass on them then turn back down on a lathe (done it before now) a good machine shop should be able to help you out
how big a hole .. big enough to be tapped for a long hex socket screw ? ... like you might find in an adjustable relief valveI removed the leaking cap in the picture and is got a ball and spring inside. Behind that there is like a needle valve so I assume it's some sort of pressure release valve? Inside the cap there is a hole but outside there is a blob of weld so I don't know if it should be like that if someone has dodged it after a previous leak. Does anyone know what the thing in the picture is called? It's got one fat hydraulic pipe coming out and this pressure release valve .
Any idea what could happen with the valve bunged up?
I changed the o rings and stuck it back together so I can do a job next week. After a short test it's not leaking but I would like to fix it properly.
That's not the best example really .. looks like a balanced flow carttridge type, not a straight forward RV, but was the best sectional I could find, illustrating the grub and lock nut ... they're one bloody complex unit, in comparison to a simple spring, ball and seat.About 1 mm. It is very similar to the relief valve on your diagram. Could it be something to do with the two speed tracking?
Sorry for all the questions, I'm trying to get a bit of an understanding or hydraulics.