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Gary Puckett
New User
Joined: 24 Sep 2012
Posts: 3
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 Posted: Mon Sep 24, 2012 5:58 pm Post subject: 520 Power Steering Pump |
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Using the great information from this site, I re-built my 520 power steering pump. I used a brand new fan shaft, installed new bushings, new seals, two on each end "back to back". The pump works great, but still leaks on the front end, fan side. I am using the John Deere power steering fluid for tractors built before 1960. I was clean and careful with the seals. What would you try next? I cannot stand a leak.
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MrJDMan80
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Joined: 11 Feb 2008
Posts: 178
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| Posted: Mon Sep 24, 2012 7:08 pm Post subject: Re: 520 Power Steering Pump |
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Do it again. Its easy to knock the spring off on the front seal during assembly. Just try it one more time
Tim
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Mike M
Tractor Guru
Joined: 31 Mar 1998
Posts: 17213
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| Posted: Tue Sep 25, 2012 5:14 am Post subject: Re: 520 Power Steering Pump |
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I use my press and try to carefully push the seals into place. Seals today are so flimsy they can can distort easy and this seems worse for me when I try and drive them into place. This may or may not be an issue here ? I also clean off the outsides of the seals and put a hardening type of sealer on them so as they don't get backed out with some back pressure.
I also cover the splines with an old microfiche card to protect the seal lips as I slide it together.
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DONMYEIL
Long Time User
Joined: 14 Oct 2004
Posts: 849
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| Posted: Tue Sep 25, 2012 5:25 am Post subject: Re: 520 Power Steering Pump |
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If by chance you put them too deep and closed off the drain hole .
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