This "Spring, Check Valve Retainer, with Spring" is the ideal replacement part to have in your arsenal. Failure of this part is the cause of most Powr-Trol problems, from "Hunting", "Irregular or Erratic Movement" to "Leak Down". Once gone from existence is now available again. This high precision part will not be found available from John Deere parts, If you are planning to do repairs to your dual control Powr-Trol, now is the time to get the parts required for the repairs. For 520, 530, 620, 630, 720, 730, 820, 830 Tractors with DUAL Powr-Trol

Replaces John Deere AR1336R