Engine/break Question

Topic 6577 | Page 1

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Josh C.'s Comment
member avatar

So today on the training pad we where learning to do the ally dock while some other PSD students where doing some practicing in preparation for the CDL test. Out of nowhere we heard this loud squeal of sorts that caused the instructor to say "did he just do what I think he did?" And ran over and just stared at the truck the noise came from.....even had the PSD trainer go walking over...I never fully got what happened but I guess it was something that can kill an engine? I just know it made our instructor practically crap bricks.

CDL:

Commercial Driver's License (CDL)

A CDL is required to drive any of the following vehicles:

  • Any combination of vehicles with a gross combined weight rating (GCWR) of 26,001 or more pounds, providing the gross vehicle weight rating (GVWR) of the vehicle being towed is in excess of 10,000 pounds.
  • Any single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds.
  • Any vehicle, regardless of size, designed to transport 16 or more persons, including the driver.
  • Any vehicle required by federal regulations to be placarded while transporting hazardous materials.

PSD:

Prime Student Driver

Prime Inc has a CDL training program and the first phase is referred to as PSD. You'll get your permit and then 10,000 miles of on the road instruction.

The following is from Prime's website:

Prime’s PSD begins with you obtaining your CDL permit. Then you’ll go on the road with a certified CDL instructor for no less than 75 hours of one-on-one behind the wheel training. After training, you’ll return to Prime’s corporate headquarters in Springfield, Missouri, for final CDL state testing and your CDL license.

Obtain CDL Permit / 4 Days

  • Enter program, study and test for Missouri CDL permit.
  • Start driving/training at Prime Training Center in Springfield, Missouri.
  • Work toward 40,000 training dispatched miles (minimum) with food allowance while without CDL (Food allowance is paid back with future earnings).

On-the-Road Instruction / 10,000 Miles

  • Train with experienced certified CDL instructor for 3-4 weeks in a real world environment.
  • Get 75 hours of behind-the-wheel time with one-on-one student/instructor ratio.
  • Earn 10,000 miles toward total 40,000 miles needed.
Old School's Comment
member avatar

I don't have a clue as to what happened, but I would sure make sure that you don't do it. They just might knock that fez off the top of your head and send you home on the bus - fez-less!
Josh C.'s Comment
member avatar

Lol, the worst I have done so far is stall the truck but last time I saved it by pushing in the clutch last moment.

In regards to my question I only remember someone saying something about breaking wrong or "dropping the engine".....or something like that.
Daniel B.'s Comment
member avatar

What I think happened is the student engaged the engine/jake brakes while at idle speeds. At such a low speed, engaging the engine brake makes the truck slow down tremendously fast and lowers those RPM's even faster to a point the RPM's get so low that the engine brake cuts off itself. It doesn't sound pleasant, and it doesn't look pleasant either.

If I was the instructor I would have crapped a brick too, followed by a lecture.

HOS:

Hours Of Service

HOS refers to the logbook hours of service regulations.
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