Daytodog
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- Harrisonburg, Va
I have a 923A2, problem is the brakes are not releasing sometimes. I'll try and explain as much as I can about what and when it does it and hopefully someone can point me to a link, manual page, or give me some guidance to troubleshoot.
First time it happened was this winter when I went and pulled out my buddies dump truck that he had gotten stuck. I was in and out of the truck hooking up Backing up setting the parking brake etc. I went to pull forward and all the rear brakes were locked. Tried the spring brake release with no luck. Came back a few days later and had no trouble, and pulled his truck out like it didn't even know it was pulling something. figured something had frozen in line.
I haven't been driving the truck much lately due to working on the dump bed I'm mounting on it. So I go to pull the truck out of the shop the other day and the brakes were locked up again. Tried the spring break release Knob again with no luck.
Truck builds air pressure fine parking brake engages holds fine and vents through the exhaust with that goose sound or however you want to describe it. Push the spring release knob in they release. At this point if you use the brakes, which as much fun as it is to run over stuff you need eventually the brakes won't release. Press the spring break knob in when this happens and brakes won't release. Try setting the parking brake and of course no goose sound venting out the exhaust now. Wait awhile (I waited about 2 hrs) start it back up and they will release briefly then lock up again. Thinking maybe it was the valve at the parking brake handle base so I cracked the air lines and operated the switch with my finger and it seemed to be working based on the air hissing from the respective line as you move the lever. So I got back in the manuals and started reading what I thought might be relevant but haven't found what I'm looking for yet. Tried searching past post no luck yet.
Ill say airbrakes are not my strong point but am not afraid to admit that, just explain it to me in detail if you have suggestions, like your trying to describe it to your mom, pictures are worth a lot, when your learning, lol. As always thanks in advance for the help. Here's a picture of the bed finally mounted and the cab controls.
First time it happened was this winter when I went and pulled out my buddies dump truck that he had gotten stuck. I was in and out of the truck hooking up Backing up setting the parking brake etc. I went to pull forward and all the rear brakes were locked. Tried the spring brake release with no luck. Came back a few days later and had no trouble, and pulled his truck out like it didn't even know it was pulling something. figured something had frozen in line.
I haven't been driving the truck much lately due to working on the dump bed I'm mounting on it. So I go to pull the truck out of the shop the other day and the brakes were locked up again. Tried the spring break release Knob again with no luck.
Truck builds air pressure fine parking brake engages holds fine and vents through the exhaust with that goose sound or however you want to describe it. Push the spring release knob in they release. At this point if you use the brakes, which as much fun as it is to run over stuff you need eventually the brakes won't release. Press the spring break knob in when this happens and brakes won't release. Try setting the parking brake and of course no goose sound venting out the exhaust now. Wait awhile (I waited about 2 hrs) start it back up and they will release briefly then lock up again. Thinking maybe it was the valve at the parking brake handle base so I cracked the air lines and operated the switch with my finger and it seemed to be working based on the air hissing from the respective line as you move the lever. So I got back in the manuals and started reading what I thought might be relevant but haven't found what I'm looking for yet. Tried searching past post no luck yet.
Ill say airbrakes are not my strong point but am not afraid to admit that, just explain it to me in detail if you have suggestions, like your trying to describe it to your mom, pictures are worth a lot, when your learning, lol. As always thanks in advance for the help. Here's a picture of the bed finally mounted and the cab controls.
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