Truck Tips: How to couple and uncouple a trailer
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- เผยแพร่เมื่อ 23 ส.ค. 2024
- After you arrive at the yard and identify the trailer you are to pick up, scan the area in front of the trailer for obstacles before backing under it.
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What a great video. Clear cut and to the point! Thank you for such a wonderful experience
The rules can be different in each Province and Territory. What I am giving is from the Ontario Rules and my knowledge of safe Coupling and Uncoupling.
Coupling:
Timer- 0.19-- Use of 4-Way Flashers- Any time you need to backup, anywhere, those 4-ways should be on. The Alarm and Reverse Lights, do not take away the responsibility of the driver. Once you are in that Captain Chair, it is his or her responsibility for the Safe Movement of that power unit.
Timer- 0:59-- That Gap- When your tractor has airbags, that Gap, is there when the Bags are deflated and below the Apron of the trailer. It is why, when you back up, bring the tractor's 5th wheel in contact with the trailer and NOT go under. From there, you can apply or dynamite the brakes and do your checks.
Timer- 1:20-- Leading up to Hooking Up- Exactly at the timer marker of this video, is where your 5th wheel should be. At this point, the airbags DO NOT need dumping, and you can apply or dynamite the brakes, do your 3-point contact to get out of the tractor and do your checks. Climb up the catwalk in a 3-point contact, and mind any gaps. It is also at this point you can pull the lines off the back of the cab and examine them as well as on the trailer. Could you make sure the rubbers are good and not torn or pinched? A repair to a torn Gladhand rubber is a simple fix. The Electric Cord, on both ends, be sure there is no corrosion in either and the pins are not broken and separated in the trailer to accept the coupler from the tractor. And place on the trailer. If the tractor does not have airbags, then the procedure you are doing applies.
Time- 1:28-- Alignment- When you have the sleeper on, the outside of the wheels and the outside of the trailer are your reference to a straight-on hookup, if you have a day-cab, although you can do the exact maneuver, if you have a back window, look out that window for alignment. Either can be satisfactory as long as the alignment is good.
Timer- 1:43-- When Hooking Up- Once all the lines are hooked up, and you're back in the cab, put your foot on the foot valve or brake pedal and push in the trailer brakes. Give it a few seconds, then reapply the dash button and listen for the exhaust from the brakes on the trailer. With the dollies or landing gear on the ground, the trailer should not move, even if you did not have chalks in place.
Once you hear that air release of the trailer, your system is charged and you can go under. If you have airbags, deflate them and allow the tractor frame to drop. Once the 5th wheel is under the trailer, STOP, and inflate the bags until the 5th wheel is flat to the trailer Apron. You use this technique when you have grease on the lower half of the 5th wheel and you don't spread it over the edge of the 5th wheel. That is just a waste. Once the 5th wheel is flat back under and listen for the lock of the jaws.
Timer- 2:00-- The Tug- that was a good tug. If that unit was going to separate, that would have been the time. Do 2 of them and hold them against the jaw or locking bar for just a second.
Timer- 2:14-- 5Th Wheel Check- Checking to be sure the Locking Arm is 'IN" and locked is all good and proper. But really the very 1st thing you should check is the "Adjustor Bolt" on the front middle of the 5th Wheel. If you look at the Timer 2:04 and pause the video, you can see it and the position it is while locked. I tried to get a good look while it is open, and so far at Timer 1:17 while back up, you can see that there is a gap between the Bolt and the Face of the 5th wheel. Hopefully further along we will get a viewing advantage of an unlocked 5th wheel.
The reason this is "IMPORTANT", is when you hook up, and you look at the back of that "BOLT", there should be a "Washer" just behind it. When the Jaws or Locking Bar shut, that "Bolt" goes inside the face of the 5th wheel. If there is a "GAP" and you can see air between that "BOLT" and the "5TH WHEEL" could mean that the "JAWS" or "LOCKING BAR" is not locked properly. To fix this problem, "Unlock", pull ahead and re-hook just a tad harder and check again. The "BOLT" should be fully against the face of the 5th wheel. If the lock has still not happened, take it to the Mechanic for a check, that could (However unlikely) be a normal resting place, which to be honest, should be closed fully.
How you would know is the "SLAP" or "SLOPPINESS" of the connection between the trailer and the tractor. That "SLAP" or "SLOPPINESS" is felt when you take off or apply the brakes. It means the jaws or locking bar are "NOT" around the "KINGPIN" properly and the risk of losing the trailer is real. Don't overlook the danger to this visual as part of the check.
Timer- 2:19- Check the 5th Wheel Holder Bar-- Right at the back of the track for the 5th wheel is a bar that is either `Welded" or "Bolted" to the frame. It is always good to check that bar for cracks in the welds, corrosion or in some cases missing or busted bolts. The lines would have already been added and a check of the trailer done as well as a brake check included.
I will take a look at the "Uncoupling" and like I said, there are no failures, just a refresher for Ontario Rules. I would rank this "Coupling Video" at an 8/10.
The rules can be different in each Province and Territory. What I am giving is from the Ontario Rules and my knowledge of safe Coupling and Uncoupling.
Uncoupling:
Timer- 3:00-- Backing Up-- Don't forget to turn on the 4-Way Flashers when backing.
Timer- 3:18-- Landing Gear-- Not everyone will have Chalks for the rear wheels of the trailer, but if you're at a company and you're dumping the trailer, they should. If they don't either, then it is the driver's responsibility to inform the fork-truck operator of this information, that the trailer will not have blacks or chalks in place. He may ask you to hold on and Not Drop just yet. Be sure to inform your dispatcher of your delay.
Timer- 3:32-- Dropping Trailer- Airbags and Unlocking Trailer-- As long as the grounds can support the trailer and the load (Or if it is to be loaded), place the landing gear, about an inch or 2 from the ground, some do it higher than that, and other are just touching. (Driver's discretion) The trailer will drop and settle when you unhook. "DO NOT TAKE OFF THE LINES- "Air or Electrical"". Check the "Adjustor Bolt" is forward of the 5th wheel and no longer in contact with the face. This is another indicator, that the "Jaws or Locking Bar" is open and free to release the trailer.
Go back into the cab, and dump the air out of the bags. The reasoning behind that move is that when you pull away from the trailer, the backend of the tractor will bounce up and pull on the tops of the airbags, and repairs to those bags will happen eventually.
Timer- 4:29- Pull out slowly, and "STOP" to allow the frame to drop away from the trailer. Pull ahead, "SLOWLY" and then pull the brakes on. Once you have come to a stop, you can get out and be sure the trailer is secured on the ground and the brakes should be locked down. Place the "Chalks or Blocks" if there are any. Climb up the catwalk and be careful about any gaps, remove the lines and reconnect to the cab holders. Climb down re-enter the cab, and as long as your body is clear of the trailer, re-activate the airbags and allow them to recharge and pull away, as you have noted.
As I have said, there are No Failures. Everything in this scenario is good and done well, with safety in mind. For the most part separation of the 2 units while driving is minimal.
I would give this video on what to do an 8/10...Good job... Ontario Rules...
Very clear and informative. Thanks
Thanks for that Great video sir
Real practical...but don't use this in CDL exams. Follow the steps
Can you post a link to the accurate way to do this? That will help me for the exams
@@madisonwest378 Follow what he showed in this video but in the real test, follow the steps exactly as outlined in the DMV manual. The instructors are going off checkoff list and that's exactly what they follow
bro was shacking that flashlight 😂
Matthew 6:19-21 NKJV 🔴
"Do not lay up for yourselves treasures on earth, where moth and rust destroy and where thieves break in and steal; [20] but lay up for yourselves treasures in heaven, where neither moth nor rust destroys and where thieves do not break in and steal. [21] For where your treasure is, there your heart will be also.
You need some type of treasures on Earth to exist though. Without food and shelter you won't exist long enough to incline your eye towards the intangible.
Perfect demonstration Magnifique 👏👏👏
Nice video 👍🏾one thing I do in my routine is while unhooking the trailer is to unlock the fifth wheel last. I find that you will have less chance of having that horrible sound of the air lines hitting the back of the cab.
Thanks for sharing!
Excellent video!!
Welcome back, we missed you :)
Very nice.
Thank you for you effort.
So the only time the airbags are deflated is when you disconnect or drop the load the airbags are inflated when you hook up to a load it sounds like
Thank you
I need more notifications,lm your collegue as well. thanks ❤
"aboot"
another wrong process never hitch until legs are slightly up or you bend the legs
Any recommend videos with active demonstrations. It's useless to me to approach this like it's abstract physics the way the manual frames it.
😮
"promosm" 😍