Posted by used red mn on April 03, 2020 at 00:30:18 from (75.73.112.20):
In Reply to: IH 660 Clutch posted by Justin H on April 02, 2020 at 19:49:12:
I will echo what Jim and Bob are telling you. The reply about the TA clutch causing your problem is only confusing your issue. Yes, for your tractor to shift correctly the linkage or levers between the clutch linkage and the TA clutch shaft need to be adjusted correctly but that does not stop your main clutch from releasing. That linkage to the TA can be completely removed from the tractor and the main clutch would still release and let you shift the gears. Take the cover off below the main clutch and have someone push the clutch down. Look for the pressure plate pulling back releasing the squeeze on the lined clutch plate. You may have to rotate the engine to a couple different positions but you will likely find the clutch plate is expanding in multiple directions due to distortion Jim is speaking about. Here is more detail about the TA release on your tractor when it is working properly. The purpose of that linkage to the TA is to release the TA clutch when there is back pressure on the gears like stopping on an incline with the TA in the direct or high side operation. The one way clutch and the direct TA clutch bind the gear train from rotating backwards thus the TA clutch needs to release to allow the gears to shift without binding pressure. That explanation is probably clear as mud, but it is a fairly difficult thing to explain. Bottom line is your problem is in your main clutch not the TA. Hope this helps.
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