D17 Series IV Steering Control Valve Input Seal

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   I am in the middle of replacing the steering U-joints on my D17 Series IV. In the process, I realized that my primary steering system leak is coming from the Steering Control Valve Input Shaft Seal, item 3 in the diagram below. My manual says to overhaul the steering control valve, the front support needs to be removed. Can I replace this seal without completely overhauling the entire steering valve? The input shaft has "splines" on it that it appears would damage the seal on installation. I'm not sure why this part of the shaft is splined, since the force is transferred through the coupler via the roll pin.
uploads/18706/Steer_Control_Val.png

Edited by conquest87tsi - 1 hour 1 minutes ago at 10:14am

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conquest87tsi Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 14 Jul 2018 Location: Minnesota Points: 6	Post Options Post Reply Quote conquest87tsi Report Post Thanks(0) Quote Reply Topic: D17 Series IV Steering Control Valve Input Seal Posted: 1 hour 2 minutes ago at 10:13am
	I am in the middle of replacing the steering U-joints on my D17 Series IV. In the process, I realized that my primary steering system leak is coming from the Steering Control Valve Input Shaft Seal, item 3 in the diagram below. My manual says to overhaul the steering control valve, the front support needs to be removed. Can I replace this seal without completely overhauling the entire steering valve? The input shaft has "splines" on it that it appears would damage the seal on installation. I'm not sure why this part of the shaft is splined, since the force is transferred through the coupler via the roll pin. uploads/18706/Steer_Control_Val.png Edited by conquest87tsi - 1 hour 1 minutes ago at 10:14am

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Alvin M Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 24 Jun 2018 Location: PA Points: 859	Post Options Post Reply Quote Alvin M Report Post Thanks(0) Quote Reply Posted: 20 minutes ago at 10:55am
	You can replace the seal with out taking it apart I never saw a splined shaft if it is splined put tape on splines