CDL College: Tractor trailer

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This infographic demonstrates the coupling and uncoupling items that you will need to inspect during the Pre-Trip Inspection portion of your CDL Skills Test. </h2>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiqkxT6nZrFdwLLM_9s7c1h_vL4VzjCDk4VHApGDZdFC60z0zUMWblXOvrVv7b3cy4eiX_lWwQdVtGjLcJ5EdI8QVlR38D1nYSATd0lu1SplwjwGQ-hjfUoBev4d_PfizQrTFxv8xwOvz4/s1600/CDL_College_Truck_Driving_School_Coupling_and_Uncoupling_Inforgraphic.png" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img alt="CDL_College_Truck_Driving_School__Coupling_and_Uncoupling_Inforgraphic" border="0" height="207" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiqkxT6nZrFdwLLM_9s7c1h_vL4VzjCDk4VHApGDZdFC60z0zUMWblXOvrVv7b3cy4eiX_lWwQdVtGjLcJ5EdI8QVlR38D1nYSATd0lu1SplwjwGQ-hjfUoBev4d_PfizQrTFxv8xwOvz4/s1600/CDL_College_Truck_Driving_School_Coupling_and_Uncoupling_Inforgraphic.png" title="CDL College Truck Driving School Coupling and Uncoupling Inforgraphic" width="320" /></a>During your <a href="http://cdlcollege.com/CDL_Testing" target="_blank">CDL skills test </a>you will be asked to explain to the examiner how you know the items associated with the connection of the truck and trailer are in good safe working condition.<br />
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<a href="http://www.slideshare.net/ericcdl/cd-college-truckdrivingschoolinforgraphiccoupling" target="_blank">CDL College Inforgraphic Download</a><br />
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<a href="http://blog.cdlcollege.com/2014/10/cdl-test-pre-trip-inspection-video.html" target="_blank">Watch the complete Trailer Inspection Video</a><br />
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Air/Electric Lines</h3>
<ul>
<li>Listen for air leaks. </li>
<li>Check that air hose and electrical lines are not cut, chafed, spliced.</li>
<li>Make sure air and electrical lines are not</li>
<li>pinched, or dragging against tractor parts</li>
<li>Check that electrical plug is firmly locked in place on both tractor and trailer.</li>
<li>Check that air connectors are sealed on both tractor and trailer.</li>
<li>Mounting Bolts. Look for loose or missing mounting clamps, bolts, or nuts.</li>
<li>Locking Jaws. Look into fifth wheel gap and check that jaws are fully closed around the kingpin.</li>
<li>Fifth Wheel Skid Plate. Check fifth wheel skid plate for proper lubrication and mounted to the platform. Also ensure that all bolts are secure and not missing.</li>
<li>Platform. Check for cracks or breaks in the platform that supports the fifth wheel skid plate.</li>
</ul>
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<b>Release Arm and Safety Latch</b></div>
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<ul>
<li>Make sure the release arm is in engaged position and the safety latch is in place.</li>
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<h4>
Kingpin/Apron/Gap</h4>
<ul>
<li>Check that the kingpin is not bent.</li>
<li>Make sure the visible part of the apron is not bent,</li>
<li>cracked, or broken.</li>
<li>Check that the trailer is laying flat on the fifth wheel</li>
<li>skid plate (no gap).</li>
</ul>
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<h4>
Sliding Fifth Wheel Locking Pins</h4>
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<ul>
<li>If equipped, look for loose or missing pins in the slide mechanism of the sliding fifth wheel. If air powered, check for leaks.</li>
<li>Make sure locking pins are fully engaged.</li>
<li>Check that the fifth wheel is positioned properly so that the tractor frame will clear the landing gear during tuns.</li>
</ul>
<br />
<a href="http://www.slideshare.net/ericcdl/cd-college-truckdrivingschoolinforgraphiccoupling" target="_blank">CDL College Inforgraphic Download</a><br />
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