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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
M610 No/low turning speed
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<blockquote data-quote="6brnorma" data-source="post: 96510" data-attributes="member: 5914"><p>That's great Danny……..You need to continue to disassemble the valve. Remove the thermal relief, the cap and the spool. It is not necessary to remove any fittings or the plug with the allen socket. Clean the valve thoroughly inside and out. Inspect the spool and valve body for corrosion. All seals/o-rings in this valve can be acquired at a 'Hydraulic" shop for pocket change. I highly recommend that you do not use the U-cup style seals currently on the spool (2) but rather the newer X style O-rings as they are much easier to work with (standard O-rings will not work). The U-cups are very difficult to re-install without damaging them and there is little pressure on them due to the style of valve anyway. Replace the three O-rings in the thermal relief.</p><p>Now for the ball/spring/shim/plug that you have pictured. Inside the valve is a "seat" with an O-ring under it……..that dang thing 'often' is nearly impossible to remove without special tools…especially without damaging it….so, If I see I am going to damage the seat I leave it alone. I have probably rebuilt 15 - 20 of these things without removing the seat and have been lucky enough not to have had a problem with that O-ring……damage the seat and I promise you have a problem. That is a true shim you have pictured. I have had valves with 3 - 4 of them inside. It takes about three of them to just about equal a thin flat washer. If the Hydro shop has a couple……grab them as you may need 1 or 2. With a combination of tightening the plug and shims…..It should take 3 - 4 seconds to raise variable speed sheave to full high speed……..OR…….let the "Hydraulics" shop do it for you for a hundred or so.</p></blockquote><p></p>
[QUOTE="6brnorma, post: 96510, member: 5914"] That's great Danny……..You need to continue to disassemble the valve. Remove the thermal relief, the cap and the spool. It is not necessary to remove any fittings or the plug with the allen socket. Clean the valve thoroughly inside and out. Inspect the spool and valve body for corrosion. All seals/o-rings in this valve can be acquired at a 'Hydraulic" shop for pocket change. I highly recommend that you do not use the U-cup style seals currently on the spool (2) but rather the newer X style O-rings as they are much easier to work with (standard O-rings will not work). The U-cups are very difficult to re-install without damaging them and there is little pressure on them due to the style of valve anyway. Replace the three O-rings in the thermal relief. Now for the ball/spring/shim/plug that you have pictured. Inside the valve is a "seat" with an O-ring under it……..that dang thing 'often' is nearly impossible to remove without special tools…especially without damaging it….so, If I see I am going to damage the seat I leave it alone. I have probably rebuilt 15 - 20 of these things without removing the seat and have been lucky enough not to have had a problem with that O-ring……damage the seat and I promise you have a problem. That is a true shim you have pictured. I have had valves with 3 - 4 of them inside. It takes about three of them to just about equal a thin flat washer. If the Hydro shop has a couple……grab them as you may need 1 or 2. With a combination of tightening the plug and shims…..It should take 3 - 4 seconds to raise variable speed sheave to full high speed……..OR…….let the "Hydraulics" shop do it for you for a hundred or so. [/QUOTE]
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General Bobcat Skidsteer Forum
M610 No/low turning speed
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