Sticker about tire pressure on a tractor door seems to be referring to something in writing there, anyone know where it's written (besides on the tire)?
"Min. Tire Pressure
Steer axle 110 psi
Drive axle 95 psi
FM-837 CS4-97"
FM-837 CS4-97?
Discussion in 'Trucking Industry Regulations' started by camionneur, May 27, 2015.
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
Maybe it said CSA-97, in a weird font, that would make more sense, or some sense. All it says in the "FM" book is in section 393, which doesn't specify a pressure, it just says not too low for whatever weight...
-
The thing is, most tires specify max pressure cold, I think, after all if that's minimum then what's the maximum?
-
The sidewall pressure is always the maximum cold inflation pressure. I follow the tire manufacturer's recommend inflation pressure for the load being carried. In almost all cases that puts the steer tires near or at their maximum, but the drive tires may be significantly lower than their maximum... sometimes as low as 75-80 psi.
To keep things simple many carriers mandate standardized pressures across their fleets at or near maximum inflation pressures. -
Okay I'll just go by the sidewall if anything else is questionable (mechanics usually say something like within 5-10 psi), and I measured them gaining 5 psi warm.
Coincidentally, I saw a heavy load blow a tire yesterday, not sure which, I'd just dodged a car that pulled in front, so I'm in the left lane, the other truck is in the right with smoke and rubber flying out, and then that car pulls in front of me again and brakes, as if waiting to see if either of us will go ahead and hit it... -
Those are most likely just part numbers for the sticker, or a reference to a company policy.
-
Yeah, I guess the numbers on my gauge are in writing, then again the one I got at a truck stop ended up reading 10psi low, and I wondered why I had such bad luck with tire pressure, until I compared it with a tank gauge...
-
So much for company policy though, I go to put air in a tire that's unquestionably below that, and they start asking me what I'm using, and why it takes time to use it. Blow me? Pardon the pun, at least.
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.