Strange "Buzzer"
If I depress the service brakes, parking brake engaged, and put the bus in either D or R, a "buzzer" in the dashboard sounds... on/off, not constant........ If I depress the service brakes, release p...
Forum Discussion
There are several different buzzers you can get with the National 7370. First,the buzzer you get when the air is not up enough to travel and that buzzer will stay on until the air builds to sufficient level. Usually 135 pounds. The other buzzer is a result of low fluid in the jack reservoir. With the jacks up, check and fill the reservoir. Another buzzer is the result of the parking brake sensor not recognizing the air is up and the brake is off.
I had the last problem and could not find the sensor so I found the buzzer under the dash and disconnected it. Someone said that sensor was underneath near the back left side tires. Didn't find it so now, when my parking brake is on and I put it in D I have no buzzer. I just have to remember to take off the parking brake.
Hope this helps. Arnold
I had the last problem and could not find the sensor so I found the buzzer under the dash and disconnected it. Someone said that sensor was underneath near the back left side tires. Didn't find it so now, when my parking brake is on and I put it in D I have no buzzer. I just have to remember to take off the parking brake.
Hope this helps. Arnold
