Airbags

[Sabrina]

Can a hole or puncture in my airbag affect my airbrakes

[Mack Technician]

1 hour ago, Sabrina said:

Can a hole or puncture in my airbag affect my airbrakes

Keep a trained eye on the dash gauge, don't let it hover below 70-80 PSI without doing an audit on the truck to fix parasitic air leaks. If you can hear/identify/locate the leak it is a good argument to fix it ASA-Available. Good luck!

[Sabrina]

There is a finger size hole in airbag and I had a break failure. I just wanted to know could the air leak affect the air breaks

[Lmackattack]

yes if the air bag has a large leak such as yours the truck air pressure might fall below the level that holds the parking brake springs in. When that happens the brakes will slowly start to apply. most times you will notice it but some times not. when this happens the shoes heat up and breaking power is limited due to overheated shoes. you will also notice that the the engine is at idle that it will not hold up air pressue with the leak but when driving down the road the compressor may be able to keep up? It all depends on how the bags were plumbed and the size air lines to the bags and such

[Mack Technician]

Your truck will try to store enough air for the chamber release, but barely.

Note, at day start-up, or after storage and leak down, your air bags (and cab bags) come up when the truck reaches 60-70PSI. The truck will try to maintain vital air supply since suspension is non-essential. Chambers can still drag.

Gotta find that dirty sucker who stuck his finger through the bag!!!!!