Truck Driving Jobs

Westcoast driver · #1 02-25-2008, 07:11 PM

I confess that I've been driving for years and I still have questions about brake tests.

I have a question about the pre-trip air leakage test. Let's say I've got the system fully charged (~120 psi), I shut off the engine, and apply the brakes. The air pressure drops from 120 psi down to 85 psi, and stabilizes there. Is that when I start timing the system for air loss? Is it okay that the air pressure dropped down to 85 pounds after I applied the brakes? (A 35 pound air drop before "stabilizing").

Orangetxguy · #2 02-25-2008, 07:22 PM

Quote:

Originally Posted by Westcoast driver

I confess that I've been driving for years and I still have questions about brake tests.

I have a question about the pre-trip air leakage test. Let's say I've got the system fully charged (~120 psi), I shut off the engine, and apply the brakes. The air pressure drops from 120 psi down to 85 psi, and stabilizes there. Is that when I start timing the system for air loss? Is it okay that the air pressure dropped down to 85 pounds after I applied the brakes? (A 35 pound air drop before "stabilizing").

A 35# drop is pretty drastic. Should only be 5-10#. Is it possible that you have bad gladhand gaskets?? If they are in so-so shape will allow air out, until all the pods have finished moving, then will seal off.

Westcoast driver · #3 02-27-2008, 11:23 PM

Orangetxguy,

I want to thank you for your answer. Your explanation makes very good sense to me. Sometimes it seems that the simplest explanations are the ones that I overlook.

I'll tell you a little more about why I asked. I work as a "transfer driver" -- transfering garbage from a garbage "transfer station" to a landfill. We pull a 48-foot tarped van -- with a walking floor that walks the garbage out.

I drove the "spare truck" (The truck with the problems) for three days, and after dumping at the landfill air would leak out of my brakes as I went downhill. If I stomped the brakes to the floor then they would stop losing air. Also the air dryer doesn't work well on that truck and I would stop and bleed the water out of the tanks whenever the brakes started to act up (I also bled the air tanks in the morning and evenings too).

Last Wednesday, when I did the pre-trip in the morning, the brakes didn't pass the air loss test. So I bled the tanks again, checked the gladhands (Took them off and put them back on), and charged the system back up. This time the brakes held air -- but they would lose 30 to 35 lbs of pressure before they would stabilize.

And the truck has other problems. It's a Volvo and it has electrical problems in the dash console -- the lights don't work and sometimes the guages don't work either. And when I performed the low air warning test the buzzer didn't come on. So I "failed" the brakes on my vehicle inspection.

And an annoying but less dangerous problem was that the backing horn and backing lights were somehow wired to the brakes. When the brakes were applied you could hear a "Beep..beep..beep.." and the backing lights would come on. And of course when this would happen at a stop light people would see the backing lights come on and hear the horn -- and they would frantically try and get around me. I figured that sooner or later I was going to get a ticket for the white backing lights shining back in peoples faces when I was going downhill on the freeway and putting on the brakes.

So on Wednesday, when it started to rain, and I knew I was going to be in heavy traffic I told my boss that I would rather take the day off than drive that truck. He told me angrily to park it and go home. I did.

Then I got a call at home and I was told that I was suspended for a week, without pay, for having refused to drive the truck. They checked out the truck and as far as they were concerned it passed. And they argued that the dash of a Volvo is a single unit and they would have to replace the whole thing to fix the problems, and since it was just a "spare truck" they weren't going to spend the money on it. Also when they did the brake test they were able to get a red light to come on for the low air warning. Maybe that was my mistake and I missed that but I think that all of the other problems justified my asking not to drive it.

I would have quit if it weren't for the fact that this job has been really easy reliable work and this is my third year doing it. I've been driving for over thirteen years and this is one of the better jobs I've had. And it sounds like the brake problems might be fixed very easily and cheaply.

The brand new Volvo I had been driving was being worked on because the pump that ran the walking floor wasn't working right. I'm keeping my fingers crossed that they have that fixed and I can drive that truck when I finally get to go back to work tomorrow.

gmh · #4 03-02-2008, 02:00 AM

Screw that. I'd run from that frickin' company. They sat you at home for a week because you didn't want to drive an unsafe POS? You do know that if those brakes cease working on the road, it is your ass on the line as well as their's, especially if you noticed something wrong?

I understand you have to eat, but I'd be looking for a new employer.

lurchgs · #5 03-13-2008, 08:04 PM

could you run the truck by an inspection site and get it declared OOS? Just curious

jorlee · #6 03-13-2008, 08:53 PM

[quote="Westcoast driver"]

And an annoying but less dangerous problem was that the backing horn and backing lights were somehow wired to the brakes. When the brakes were applied you could hear a "Beep..beep..beep.." and the backing lights would come on. And of course when this would happen at a stop light people would see the backing lights come on and hear the horn -- and they would frantically try and get around me. I figured that sooner or later I was going to get a ticket for the white backing lights shining back in peoples faces when I was going downhill on the freeway and putting on the brakes.
quote]

Does that sound awfully familiar. Beeping with brakes, turnsignals, and the headlights. Took a while to find the problem since all the lights would work right, even though it would beep, with them. Took me a few weeks to find, due to it coming and going.

bikerboy · #7 03-17-2008, 01:22 AM

That problem with the backup buzzer coming on with the brake lights, sounds like a bad ground problem somewhere in the wiring.

mdgardner963 · #8 03-17-2008, 06:55 PM

Even more over the volvo's has a short in the dash they were all recalled also if you have that big drop i would think of a bad pod if the rubber glad hands are all ok. ( i carry rubber spares) If a company made you take a week off because of a problem they may be in vioation of dot rules i would check it out.

Many times i stood up and called a POS a POS and refused to drive it. Most not all will fix it and some will even be happy you found a problem.
I drove with Mike Lowery for about 2 weeks befor i told them were they could put there truck.. to many good companies out there OTR and Local to put up with bad equipment..

Sometimes you have to teach a lession to them, Its an excellent idea to have a dot bear or station look over junk.. Tell them everything you told the company and they will give the company greef and not implicate you in the process. :twisted:

mdgardner963 · #9 03-17-2008, 06:57 PM

Even more over the volvo's has a short in the dash they were all recalled also if you have that big drop i would think of a bad pod if the rubber glad hand. ( i carry rubber spares) If a company made you take a week off because of a problem they may be in vioation of dot rules i would check it out.

Many times i stood up and called a POS a POS and refused to drive it. Most not all will fix it and some will even be happy you found a problem.
I drove with Mike Lowery for about 2 weeks befor i told them were they could put there truck.. to many good companies out there OTR and Local to put up with bad equipment..

Sometimes you have to teach a lession to them, Its an excellent idea to have a dot bear or station look over junk.. Tell them everything you told the company and they will give the company greef and not implicate you in the process. :twisted:

the Bottom line is you are the driver and the one who will do the time no matter what else you are responable..

kc0iv · #10 03-17-2008, 09:21 PM

Quote:

Originally Posted by mdgardner963

Even more over the volvo's has a short in the dash they were all recalled also if you have that big drop i would think of a bad pod if the rubber glad hand. ( i carry rubber spares) If a company made you take a week off because of a problem they may be in vioation of dot rules i would check it out.

Many times i stood up and called a POS a POS and refused to drive it. Most not all will fix it and some will even be happy you found a problem.
I drove with Mike Lowery for about 2 weeks befor i told them were they could put there truck.. to many good companies out there OTR and Local to put up with bad equipment..

Sometimes you have to teach a lession to them, Its an excellent idea to have a dot bear or station look over junk.. Tell them everything you told the company and they will give the company greef and not implicate you in the process. :twisted:

the Bottom line is you are the driver and the one who will do the time no matter what else you are responable..

If a D.O.T. inspector inspects your rig they will fill out an inspection report and your name will be on the report along with either/or tractor number/ trailer number. In addition what they find the D.O.T. may put you out-of-service,until the repairs have been complete, or they may simply give the company "X" number of days to make the repairs and send them a copy showing the repairs have been made.

Plus just because you claim the company has poor equipment doesn't mean D.O.T. is going to do a site inspection or increase truck inspections at the scale. It doesn't work that way.

kc0iv