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    Problem with TL420A Loader on a B20 Tractor

    Thanks for the comments - Smokeydog, Yes, pushing the lever forward lowers the bucket and pushing further puts it into 'float'. As Dan points out the parts diagram as well as my WSM show check valves in both control valve sections. Dan, Thanks for confirming my initial thoughts. It...
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    Problem with TL420A Loader on a B20 Tractor

    I'm a new owner of a well used B20. It has a TL420A loader and a BT750C Backhoe mounted. It needs some TLC but generally seems to act as it should. I have noticed a problem with the TL420A loader. The boom will usually drop as the valve spool moves from the UP position to the...