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Bobcat Skidsteer Forums
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Bobcat 632 air in hydraulics
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<blockquote data-quote="Tazza" data-source="post: 1306" data-attributes="member: 82"><p>The first thing i would check is your relief vavle. With all the work you have done you *may* have let a piece of crap dislodge and get stuck in your relief vavle. This should be located in your control block, it should have some numbers stamped on it. You actually have 2 relief vavles on the control block, one for your main hydraulics and 1 on your lift arm control. I would doubt it is the lift arm relief valve, it should be the main relief valve, it should have something like 2100 or 2200 stamped on it, standing for 2,100 PSI ot 2,200 PSI. Hopefully that is all that is wrong. Have you replaced the hydraulic oil filter? if not, it would be worth replacing they are all of 12 or so bux each. Whenever you do major work on your machine you really should change the filter.</p><p>The Relief valve is a simple spring and poppet, so pull out the poppet and spring and claen it out then re-assemble. When you re-assemble it use a bit of thick grease to hold the spring and poppet together for re-installation.</p><p>Let me know how you go, if it doesn't work let me know and i will have a closer look at my 731 manual as i am pretty sure these 2 have the same hydraulic/hydrostatic system.</p><p>I can't be bothered soing a spelling check, so don't yell at me if i have some terrible spelling.</p></blockquote><p></p>
[QUOTE="Tazza, post: 1306, member: 82"] The first thing i would check is your relief vavle. With all the work you have done you *may* have let a piece of crap dislodge and get stuck in your relief vavle. This should be located in your control block, it should have some numbers stamped on it. You actually have 2 relief vavles on the control block, one for your main hydraulics and 1 on your lift arm control. I would doubt it is the lift arm relief valve, it should be the main relief valve, it should have something like 2100 or 2200 stamped on it, standing for 2,100 PSI ot 2,200 PSI. Hopefully that is all that is wrong. Have you replaced the hydraulic oil filter? if not, it would be worth replacing they are all of 12 or so bux each. Whenever you do major work on your machine you really should change the filter. The Relief valve is a simple spring and poppet, so pull out the poppet and spring and claen it out then re-assemble. When you re-assemble it use a bit of thick grease to hold the spring and poppet together for re-installation. Let me know how you go, if it doesn't work let me know and i will have a closer look at my 731 manual as i am pretty sure these 2 have the same hydraulic/hydrostatic system. I can't be bothered soing a spelling check, so don't yell at me if i have some terrible spelling. [/QUOTE]
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Bobcat 632 air in hydraulics
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