You say that but ive never had a truck without both drive axles using parking cans
2x petes with tmc
My 94 kw
The internationals with ruan
The w900l i had for a bit this year/ drove a few years ago
Brake chamber PM.
Discussion in 'Ask An Owner Operator' started by RunningAces, Nov 22, 2021.
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YardMule89 and Pamela1990 Thank this.
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$69.00 each new today at advance auto.
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xsetra, Pamela1990 and RunningAces Thank this.
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All 8 of our trucks parking brakes on both drive axles, and the trailers have parking brakes on all axles.Oxbow and ProfessionalNoticer Thank this. -
If you have parking brakes on both axles, and you lose all your air, both axles lock up and cause you to fishtail. If only one axle locks up, you can still use the other axle to keep you moving straight. Maybe there's another reason, but that's the only one i can think of. Kinda makes sense, I guess.
Oxbow, Dino soar and ProfessionalNoticer Thank this. -
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If you dont have the bolt or the spring is broke You don’t have to cage a chamber on the side of the road. Just back the adjustment off all the way loose on the slack.
As far as both axles on tandems having park brakes. That has traditionally been customer preference. Front or rear or both was how the order was taken when speced. Some came front drive only. Some rear drive only.
Majority did not have on both drives because of mobility issues of getting truck off the road in an emergency air loss clamp down situation. That was what the “bus system” blue knob and reserve tank that california mandated back in the day was for. Many 70’s and 80’s era models had that extra blue knob for a one time squirt of air to yank ya outta harms way.
Same with brakes on steer axle prior to July of 1980. Some had them. 99% did not.ProfessionalNoticer Thanks this.
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