How to hook up or couple a semi trailer or b-double. Step by step guide. Checkout Free's Brisbane for more great videos. Identify your turn table (fifth wheel). Is it a fixed quick release (QRTT) or a ballrace? Check for a block behind the trailer’s kingpin. Make sure they are compatible. Check heights between the truck (or A trailer) and the trailer you are hooking up. Slowly reverse the turn table under the trailer’s skid plate, but don’t connect to the pin. Connect your airlines, electrics, E

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