Any other Toyota techs ever encounter a defective or perforated oil strainer (Toyota part # 32804-23330-71) inside the transmission control valve?
One of our trucks was pushed to the shop with a complaint of "Transmission does not work".
Trans would not operate in Forward or Reverse and pressure checks showed 165 PSI at the Main but 0 PSI at the clutch port.
Air pressure to the clutch ports with valve body removed showed clutches to be intact.
Tear down of the valve body revealed a stuck safety valve (Toyota part 32732-23330-71) and a stuck change valve (32735-23330-71). Both were bound up by debris and showed slight scratching. When I separated the valve body sections I discovered a 5mm sized section of the oil strainer missing completely.
I am just wondering if anybody else has ever found one of these strainers to be defective. I can't see any reason for this to happen unless it just vibrates and shakes a hole in the mesh or if it happens because of hydraulic "flow hammering" pulses.
Comments requested.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.