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420 hydraulic pump rebuild

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Joined: 08 Mar 2012
Posts: 12

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PostPosted: Wed Jan 15, 2014 5:52 pm    Post subject: 420 hydraulic pump rebuild Reply to specific post Reply with quote

I finally got around to rebuilding my hydraulic pump on the 420. A bad o-ring was causing hydraulic oil to go to the engine crankcase. I replaced the o-ring on the shaft and was re-asembling the pump body. I notice the new rubber rings between the 3 sections were narrower than the originals. They did not fill up the groove in the center section. Checked the part # of what I have with the parts catalog and I have the correct part. The part # is T16572. Has anyone else run into this? Don't want to assemble it and have it leak like crazy.
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Tractor Expert

Joined: 25 Aug 2009
Posts: 2411

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PostPosted: Wed Jan 15, 2014 9:21 pm    Post subject: Re: 420 hydraulic pump rebuild Reply to specific post Reply with quote

They are narrower because they haven't been flattened out yet. Haven't heard of any giving any problems.
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