petersonj
TDR MEMBER
I appreciate you sharing the details of the incident. I, too, understand the risks of owning an aged truck with a manual transmission / park brake setup. I now carry a wheel stop behind the driver seat and use it whenever I park on a slope that could endanger anyone when I get out of the truck with engine idling and park brake set.
Over the course of 21 years and 370,000 miles, I have had and issue with the park brake twice. It was the same problem, different sides. First time with left park brake in 2015 at 215,000 mile - second time right park brake in 2021 at 358,000 miles. The failure was (from my log) "Left park brake not holding properly - cause was in the left brake assembly from two sliding parts forming a notch limiting the full travel of the shoes. Removed notch with a file and fixed the problem" and "Right park brake not holding properly - cause was in the right brake assembly from two sliding parts forming a notch, limiting full travel of the shoes. Removed notch with a grinder and fixed the problem."
Both occurrences left me with a very weak park brake. The symptoms came on very gradually and went unnoticed for a long time. The park brake pedal stayed firm because the notch would not allow for the full travel of the brake shoes inside the affected drum. When I did each repair, afterward the park brake worked like new. Other than those two instances, I have never needed to replace any park brake parts. I think other truck owners may have experienced this problem, but may have never recognized it for what is was.
- John
Over the course of 21 years and 370,000 miles, I have had and issue with the park brake twice. It was the same problem, different sides. First time with left park brake in 2015 at 215,000 mile - second time right park brake in 2021 at 358,000 miles. The failure was (from my log) "Left park brake not holding properly - cause was in the left brake assembly from two sliding parts forming a notch limiting the full travel of the shoes. Removed notch with a file and fixed the problem" and "Right park brake not holding properly - cause was in the right brake assembly from two sliding parts forming a notch, limiting full travel of the shoes. Removed notch with a grinder and fixed the problem."
Both occurrences left me with a very weak park brake. The symptoms came on very gradually and went unnoticed for a long time. The park brake pedal stayed firm because the notch would not allow for the full travel of the brake shoes inside the affected drum. When I did each repair, afterward the park brake worked like new. Other than those two instances, I have never needed to replace any park brake parts. I think other truck owners may have experienced this problem, but may have never recognized it for what is was.
- John