It is leaking and can not be repaired. I am hoping to find a used one. The control relief valve made by Oil Control part number 05163903032003B. It is on a Comer final drive motor. It is also on other brands of final drive motors. I have looked the net , but have been unable to find one. I have also contacted all the hydraulic repair shops in my area. I am hoping someone has a failed final drive motor with good valve on it. Any suggests on how to find one would be appreciated.