Will this matter?
#61
09-24-2007, 09:17 AM
NOW.... it gives me an "edit" button! :lol: I allready copied, deleted and replaced THIS one, once!! :roll:
:roll: :roll: :roll: :roll: :roll:
__________________
Remember... friends are few and far between. TRUCKIN' AIN'T FOR WUSSES!!! "I am willing to admit that I was wrong." The Rev.
#62
09-24-2007, 10:55 AM
Re: Will this matter?
Originally Posted by Fredog
I know nobody does it but most companies will tell you to hook up the air lines before you back all the way under.
:shock: Here is an exact procedure for the newbees: You should hook up the red line before pinning to one of these old guys and then push in the red button and wait until the air stops hissing through it as the trailer tank fills through a one-way check valve on the trailer. Then you pull out the red button to set the emergency brakes on the trailer - an air pressure loss on the red line causes a fancy valve in the trailer to apply the stored air from the tank to the trailer brakes (this is the emergency AKA "breakaway" brake system). The trailer one-way check valve prevents the trailer air tank from feeding back out the red line. Now pin to it. Make sure you then set the tractor parking brakes (pull out yellow button) in case the air bleeds down and the trailer brakes release before you finish hookup and get back in the cab! I'm afraid I'm in the habit of hooking without setting the tractor parking brakes and I had a close one once as the rig started to roll forward as I was cranking up the gear. That particular trailer was against a fence and I didn't notice it had no spring brakes so I didn't charge its air tank first! :shock:
#63
09-24-2007, 11:23 AM
Wow! This "program" is funny! This is my triple post, which I choose to "delete" which I can only do by "editing" it..... but there IS NO EDIT button on this post!! :shock: :lol:
What you got to say NOW, Scoe???? :shock: :lol: :lol:
__________________
Remember... friends are few and far between. TRUCKIN' AIN'T FOR WUSSES!!! "I am willing to admit that I was wrong." The Rev.
#64
09-24-2007, 11:24 AM
Re: Will this matter?
Originally Posted by roadranger
Originally Posted by Fredog
I know nobody does it but most companies will tell you to hook up the air lines before you back all the way under.
:shock: Here is an exact procedure for the newbees: You should hook up the red line before pinning to one of these old guys and then push in the red button and wait until the air stops hissing through it as the trailer tank fills through a one-way check valve on the trailer. Then you pull out the red button to set the emergency brakes on the trailer - an air pressure loss on the red line causes a fancy valve in the trailer to apply the stored air from the tank to the trailer brakes (this is the emergency AKA "breakaway" brake system). The trailer one-way check valve prevents the trailer air tank from feeding back out the red line. Now pin to it. Make sure you then set the tractor parking brakes (pull out yellow button) in case the air bleeds down and the trailer brakes release before you finish hookup and get back in the cab! I'm afraid I'm in the habit of hooking without setting the tractor parking brakes and I had a close one once as the rig started to roll forward as I was cranking up the gear. That particular trailer was against a fence and I didn't notice it had no spring brakes until I hooked to it without charging its air tank first and it rolled on me! :shock:
__________________
If you can't shift it smoothly, you shouldn't be driving it.
#65
09-24-2007, 11:28 AM
Re: Will this matter?
Originally Posted by Splitshifter
Not trying to offend you Roadranger, but did you read all the previous posts in this thread before making your post
8)
#66
09-24-2007, 12:44 PM
Re: Will this matter?
Originally Posted by roadranger
Originally Posted by Splitshifter
Not trying to offend you Roadranger, but did you read all the previous posts in this thread before making your post
8) I seem to remember posting something about this, let's see. Yup, here it is, on page 3 of this thread:
Splitshifter
Super Trucker Joined: 19 Jun 2006 Posts: 365 Location: Right here Posted: Sun Sep 23, 2007 10:22 am Post subject: Those old (pre FMVSS 121) trailer brakes were just as stated: No spring actuated parking brakes. When you shut off air to the trailer or pull off the red gladhand, the trailer air valve would send full air pressure from the trailer air tank to the brake chambers on the trailer wheels. This worked fine as long as there were no air leaks in the trailer brake system. Once the trailer air tank ran out of air? No brakes on the trailer whatsoever, until you hooked up the supply line and charged it up again. That is why you would get close, hook up the air lines and charge the trailer with air, and then apply the trailer hand valve before backing under one of those. It's not B.S., I hauled heavy equipment on a trailer set up that way back in the late 70's early 80's. 
__________________
If you can't shift it smoothly, you shouldn't be driving it.
#67
09-24-2007, 12:59 PM
Re: Will this matter?
Originally Posted by Splitshifter
That is why you would get close, hook up the air lines and charge the trailer with air, and then apply the trailer hand valve before backing under one of those.
BTW the CT exam required hooking up the lines first whereas the RI and MA exams required them to be hooked up last - wrong order would fail you in all three states. I've seen schools accused of teaching you to pass the tests and not to drive - but I have to say in retrospect they had to do it that way. If you did things "correctly" or "real world" you'd never get your CDL! Being shown more than one way to do something would confuse many newbees when it came to testing time. :shock: We had one customer that owns 4 or 5 old "pre spring brake" flats that we used to move around for them sometimes with large tent stuff. I was pulling one to the Boston Common with 45K of concrete anchor blocks when one of the old dry rotted tires blew out a pencil size hole about half a mile before I got to the common. looked like a bullet hole! :shock:
#68
09-24-2007, 03:16 PM
Re: Will this matter?
Originally Posted by roadranger
Not all tractors have a "trailer hand valve" - in particular most of the school trucks didn't so we were taught the method I spelled out. Also in playing "Yard Jockey" often only the red line is hooked up.
Most "Yard Jockey" only have the Red Line. They just use the tractor brakes. Since most "Yard Jockey" have power lift so they don't have to do the dolly thing either. Move a couple hundred trailers per shift and you will see why. BTW Schneider teaches all their drivers to connect the air lines BEFORE they back under the trailer. Or at least that is what my brother told me. I never work for them. I learned the old way (self taught). We also had quite a few trailers that would roll all over the yard. So you learned real fast to connect the air lines. It is real a shame newer drivers don't know enough about brakes. Something as simple as a broken line and they don't know how to adjust the brakes so they can get to the next truck stop. They set beside the road waiting for the "hook" to tow them in. I've seen drivers waiting for service because they didn't know how to adjust the brakes. kc0iv
#70
09-24-2007, 11:18 PM
Re: Will this matter?
Originally Posted by kc0iv
I've seen drivers waiting for service because they didn't know how to adjust the brakes.
:shock: The course is only one day, I paid $150 for it. 8) |
8) :roll:
