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Lancaster, Co. PA | I had a similar problem with my T300 single axle. Brakes would be very soft and then slam on. You could hear a slap when they came on hard. Fronts would grab so hard that it would throw you to one side or the other. Really unsafe!! I was at Kenworth dealer getting parts one day and road service guy was there. Asked him and he said that's how his T3 service truck is. They don't know why, that's just how it is. Said to let HIM know if I figured it out!!
A week later I had a slow day so I pulled front wheels and drums. Turns out that the S cams and the rollers on the shoes had enough surface rust on the that they would not roll and engage smooth. Took full system pressure to make them move instead of coming on gradual. Sanded all the rollers and S cams and lubes with silicone grease now brakes work great. Didn't bother to tell Kenworth yet. | |
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Peterbilt brake issue
