TM 9-2330-371-14&P
7. Ease truck tractor forward to check coupling. If coupling is not locked, rock truck
tractor back and forth slowly until kingpin (1, above) is locked.
8. If hook-up failed, repeat steps 2 thru 7.
9. Raise cover on tractor-to-trailer electrical socket (6) and push cable (7) straight
in.
10. Connect service air line (8) to right semitrailer gladhand (9).
11. Connect emergency air line (10) to left semitrailer gladhand (11).
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