I couldn't help but think of this thread today.
even on a rig with an anti-compounding valve, if you hop in for your license air brake check and touch the brakes with the maxi's applied, you fail, done. over even if you call it out. Now older stuff, meh, would rather have some control.
You are absolutely right, if you pull the brake knobs, then hit the foot pedal, you actually have less braking power, not more. the first air from the foot valve goes to release the parking brakes, then, and only then, does air go to apply the service brakes.
If the anti-compounding valve is removed, when you apply both chambers, you damage your foundation brakes. This does NOT help.
Truck drivers have been telling other truck drivers to pull the brake knobs in an emergency for years, leaving it to the mechanics who understand how they work to correct this dangerous misinformation.
This might not be the best done video but it does explain how the anti-compounding valve system works:
https://www.youtube.com/watch?v=LmrP_BxMfOI
Not my video but the first one I found., And Fast_st, I know you knew this already, just backing you up a little!
I'm tying down my baby dozer today and hoping for an incident free trip with not even a spilled soda in my lap! I half cheat and split a 20' chain with 4 load binders, slack in the middle, have to remember to bring the tires to get up over the steel beavertail .
We hear more hearsay about trucking rules than facts. I'm told that Authorities will fine you for less than four individual chains, 5 if it has a bucket. One guy claims over center binders are no longer allowed.
FMCSA rules are clearly printed in the green book and available online.
Basically:
Under 1000 lbs and 5ft in length, one tie down. Over 5ft or 1000lbs, at least two tide downs. For bulk loads, one tie down every 10 feet.
Your tie down working load limit must equal at least 50% of the weight of the object you are tying down. If the tie down goes from one side of the trailer, over object, and to the other side of the trailer, you get the full WLL (indirect tie down). If your tie down goes from one side of the trailer to the object, you get 50% of the WLL (direct tie down).
If you are hauling a vehicle over 10,000 lbs, you must use at least 4 tie downs, preferably at each corner. More tie downs are needed if your 4 tie downs do not equal 50% of the weight of the vehicle.
Buckets and shovels have to be lowered and have a separate tie down.
You can use any kind of chain you want. Unmarked chains default to grade 30. Unmarked straps default to 1000 lbs/inch of width. Any kind of binder is fine, but every chain has to have a binder or someway to tighten it.
It's really not that complicated.
We needed that 600 page green book when securing the kitchen set .![]()
idc chain down laws or no chain down laws I always do a 4 pt tie down and run a chain over the boom or attachment.
Wet muddy decks can be very slick. Friday I had a close call with an ex100 at work loading it onto a 20 ton trailer once I got onto the deck I slid off the trailer sideways luckly I swung landing on the counter weight . I lifted my self off the trailer and pulled the trailer out from under the machine. 1st time for me as i am only 24 years old but it can happen to anyone right? I had my fair share of sticky situations but many more to come.
No sense of arguing. Loads do slide off of trailers. That's the point of tying them down. Has nothing to do with what happens in an accident but more toward preventing an accident.
I don't care how many times you haven't tied something down, or how many years you have been hauling stuff not tied down, YOU HAVE NO RIGHT TO ENDANGER the general population, much less my wife, my kids or my grandkids because you are lazy.
Rick