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5300 john deere hydraulics


 
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wayned
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Joined: 23 Jan 2011
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PostPosted: Sun Jan 23, 2011 5:59 am    Post subject: 5300 john deere hydraulics Reply to specific post Reply with quote

installed new engine and pto clutch which is dry clutchs after this hyd are slow and poor changed and cleaned screen -filter twice with new oil ran fine for hour or so then got sluggish and steering went away along with loader and 3point is it possible there is a seal in the rockshaft housing like the old 4020 that blew out or is the pump a common failure on these tractors
 
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Bob
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PostPosted: Sun Jan 23, 2011 6:11 am    Post subject: Re: 5300 john deere hydraulics Reply to specific post Reply with quote

Got an air leak into the pump suction line after splitting the tractor?
 
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wayned
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PostPosted: Sun Jan 23, 2011 6:53 am    Post subject: Re: 5300 john deere hydraulics Reply to specific post Reply with quote

ive checked clamps on suction hoses and orings arenew on fittings if there was leak when tractor not running seems like u would see sweating or drips from leak right thanks for replyopen to any suggestions might just buy new hoses and clamps and replace them anyway cheaper than pump
 
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WTW
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PostPosted: Sun Jan 23, 2011 7:33 am    Post subject: Re: 5300 john deere hydraulics Reply to specific post Reply with quote

wayned,
Quite the contrary. Air leaks on suction side of hydraulic pumps most often do not present themselves as oil dripping or oozing messes that you may think would reveal them. I have to agree with Bob, most likely you have an air leak on the draw side of your hydraulic pump. If my memory serves me right there is a molded rubber fitting on the suction side of hydraulic pump This connection would be the first place I would look at "real close" as a small fine crack or spilt in this molded fitting (maybe under a hose clamp) could be the cause to your big problem. The reason it may not show external leakage is because this connection is above oil level and there is not even reservoir pressure applied to this point in circuit. Even a air leak at or below reservoir level may not present itself as an external leak but still allow air to be drawn through a crack,loose connection or poor hose lining. Take another look before buying parts you may be pleasantly surprised that your repair may not be all that serious. Good Luck, DW
 
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wayned
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PostPosted: Sun Jan 23, 2011 9:21 am    Post subject: Re: 5300 john deere hydraulics Reply to specific post Reply with quote

thanks alot ill check again it never hurts to check 2-3-4 times verses 1250.00 pump hopefully i missed something thanks for the time
 
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