Re: Hydrostatic problem in a Bobcat

Posted by southsoon1 on May 28, 2005 at 21:05:51 from (67.163.176.241):

In Reply to: Re: Hydrostatic problem in a Bobcat posted by Steve_ne on May 27, 2005 at 05:43:09:

My machine is a 742. I replaced the hydrostatic pump today (took all day) and the unit is as dead as it was when I started. I found that I have no charge pressure into the pump. I then took apart and checked the metering block and it all looks good inside. The hydraulics work fine but when they pump up a cylinder, it sounds like something is bypassing or possibly has air in it. I noticed that there is also air in the hydro oil when I bleed it. I really don"t know if this is normal. Anyway, I"m more lost now than when I started. I can"t believe that something so simple can give me so much trouble. ): Anyone have any ideas on how I can get the charge pressure to come up? (I almost think that the hydro pump is starving and causing my problem.) I was under the imoression that the charge pressure is created by the hydraulic pump feeding distribution block but I could be wrong. Help. (please)

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