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4020 steering motor and hydraulic pump


 
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boner58
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Joined: 24 Jun 2011
Posts: 65


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PostPosted: Tue May 18, 2021 5:06 am    Post subject: 4020 steering motor and hydraulic pump Reply to specific post Reply with quote

I have a 4020 with a hydraulic pump that is making a lot of noise and a steering motor that is leaking.
question 1 Is there a way to identify which pump I have before I remove it to get a rebuilt one or does it matter?
question 2 to reseal the steering motor would I also be ahead to replace the pistons also? or just reseal it all?
 
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tim s
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Joined: 01 Nov 2008
Posts: 13692
Location: Somerset Ohio

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PostPosted: Tue May 18, 2021 6:42 am    Post subject: Re: 4020 steering motor and hydraulic pump Reply to specific post Reply with quote

Your pump would be the 3 inch pump,,if it doesn't have a serial number tag on it it will be the old version,,if it has a serial number tag the new version, they have a different shaft seal,, a noisy pump could mean worn bearings and shaft,, I would replace it with a new after market pump from All State,, about $900,, to reseal a worn out pump is near like shoeing a dead horse, you may need a different pressure side oil fitting, the old one will be a #8,, the new one will be a #10,as for the steer motor just o-rings and seals will do it.
 
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matthies
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Joined: 07 Sep 2014
Posts: 1955


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PostPosted: Tue May 18, 2021 5:17 pm    Post subject: Re: 4020 steering motor and hydraulic pump Reply to specific post Reply with quote

Tim s so what combination of fittings do you use to get the pressure side of the pump connected to the original steel line? I tried one of the after market pumps and couldn't get the line to fit worth a darn and went and rebuilt the old pump. The after market pump had a bigger port and was the only style available when I was doing this. thanks chris
 
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tim s
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Joined: 01 Nov 2008
Posts: 13692
Location: Somerset Ohio

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PostPosted: Wed May 19, 2021 3:13 am    Post subject: Re: 4020 steering motor and hydraulic pump Reply to specific post Reply with quote

I found a fitting at my hydro supply store,, I will try to post a pic after bit. I got a couple to have on hand.
 
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