Service brake problems in wet weather

[snailexpress]

(12-08-2016 )dalexis Wrote:  There are other drivers in this fleet having the exact same problems, These are relatively new trucks just over 100k mileage and some less. Lots of great suggestions but none of them seem to be what caused this. No wheel seals leaking, no air obstructions, no water in the air tanks, brake pads are not worn, did not run through any oil on the road, wheel bearings not loose etc. the wet weather should have no effect on braking power, been through tons of rain storms worse than this 1 and never had a brake failure like this with the pedal feeling like a brick. The brakes were simply not applying except for the left front drivers side. It kind of acted like more of a valve problem because one brake was working while the others were not. What in the braking system would allow pressure to be sent to 1 wheel but not to the other wheels?

One of my friends has same complains for the brake system.