Leroy Posted December 31, 2020 Share Posted December 31, 2020 I am working on a Mack dumptruck. For the first time in my life. When I press the brake pedal the brake pedal will not go down. Do I need to replace the piece that all the brake lines are running too? Quote Link to comment Share on other sites More sharing options...
0 alex g Posted December 31, 2020 Share Posted December 31, 2020 You probably will have to replace it but you can try to lube it up with some penetrating oil and try to get it to move. Quote Link to comment Share on other sites More sharing options...
0 doubleclutchinweasel Posted January 5, 2021 Share Posted January 5, 2021 On 12/31/2020 at 4:40 PM, Leroy said: I am working on a Mack dumptruck. For the first time in my life. When I press the brake pedal the brake pedal will not go down. Do I need to replace the piece that all the brake lines are running too? Did you ever figure it out? Bad treadle valve or a stuck pedal hinge? Quote "Eagles may soar, but weasels don't get sucked into jet engines." Link to comment Share on other sites More sharing options...
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Leroy
I am working on a Mack dumptruck. For the first time in my life. When I press the brake pedal the brake pedal will not go down. Do I need to replace the piece that all the brake lines are running too?
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