I DO think it is a problem. I get that the pin in the spelter socket has to be removable, but why is no hook or chain provided in the BII? A snatch block is provided, S&S thought of that, but what was the poor soldier supposed to use to attach the cable to something???
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Just had a light bulb moment. No hook is provided because the vehicle designer's intention was to have the winch operator ALWAYS use the snatch block with a 2 line pull, and attach the socket to the tow bar attachment point on the driver's side.....
Is this what the TM says? So does this mean that you won't be fitting a tail chain and hook?
What is the capacity of the winch? I can't imagine that twice the cable and the snatch block would always be deployed if the amount of "stuck" is within the limits of the winch. It will still self extract, even if the pull is slightly off center. Same as the HEMTT series of trucks with that self recovery winch. It's all about adequate space available on the vehicle and that self recovery will be way down the list of specification requirements vs overall length, capacity, range, approach/departure angles etc., etc...
The snatch block would be reqd if the load factors - mire depth, hill, disability and payload/weight go beyond the single line pull capacity of the winch...
If the chain tail end works for you - your intended use of your truck, then I'm all for you doing what you want.
As an alternative and interesting tangent, a discussion could come from your observations..........
What hasn't been discussed is the possibility - as with auto transmissions, the dumbing down of driver training, ... the military and safety people may have decided that an open hook has the potential to slip off, become detached and personal injury/damage occur, so switching to the positive lock of a pin and keep similar to a shackle is the way to go.....