Insert the D ring through the eye/loop of one end of your recovery rope. Appropriately choose your rope and D ring. The Work Limit Load of your rope and D ring will depend on the weight of your vehicle. So a 1” rope that has a 33,500 MBS (Minimum Breaking Strength) will be nicely matched to a typical 4.75 Ton D ring with a WLL (Work Limit Load) factor of 4, which is about 38,000 lb.
Having slipped that unscrewed D ring through one eyelet of your recovery rope, now slip that same D ring through a recovery point and which you know was intended to be a recovery point. Screw the pin back into your D ring so that your screw pin can no longer tighten by hand, then unscrew it with only a quarter to half turn back out (helps keep your screw pin from getting locked in after the hard pull on the pin.
If your pin is not coming loose tap the end and 9 times out of 10 it will come loose.