I have a dresser 530. It's just now started to not want to move forward or reverse .the top driveshaft I assume is the input for trans is not turning just creeps and you can stop it with your hand I cleaned both suction screens and changed filter in the can. Still same problem. You can fool with it and finally get it to go and when it starts moving as long as you are using it it's fine but if you stop for any amount of time it won't move again. I checked all hoses for sucking air all look good. I broke the hose loose where it attaches to the trans on top and not much fluid comes out no pressure at all. I also took loose on the square block on bellhousing and it blew air out and foamy oil continuously but again didn't seem have any pressure behind it . This is the line coming from the filter. Any ideas? Charge pump/torque converter?
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