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Steering box conversion q&a


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Will a 620 steering box convert to a 520? Mine is leaking


Get a puller and remove the pitman arm. There is a seal up in there that you should be able to tighten a long screw into. Maybe two of them. Use vice grips to pull it down and off the sector shaft. Grease a new seal so it isn't dry and use a socket to tap it up into place.


The lower 521 seal is 48137-36700.... about $4. Use this number to cross reference from NAPA or Lordco....



I've done this with a 620 box and it had a C clip and washer and then the seal. I don't think the 521 has these but it may.

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