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Hi, can anyone help with the thread size & form of the coolant drain tap on the passenger side rear of the Bedford 28HP block.

The drain cock thread looks tapered & measures around .390" nominal diameter & TPI lines up with 28TPI gauge? 

Doesn't seem to line up with anything standard on my thread charts.

The block has been cleaned out but the thread in the block needs chasing out as the drain cock locks up after a few threads.

My parts book doesn't give the thread detail of this item.

advice appreciated 

cheers

Pierre

 

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david1212, It is the original tap.

I've got it sorted now & in the block with some sealant. Maybe just worn on the end few threads. We'll see how it goes when up & running again,

Thanks for your interest.

cheers

Pierre

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