Chevrolet P30 Van Brake Booster
Finding the Causes behind Common Chevrolet P30 Van Brake Booster Problems
Majority of modern cars and trucks use the brake booster technology. The Chevrolet P30 Van brake booster works with the brake pads and the brake discs to increase the force needed to put your vehicle to a stop. With its vacuum diaphragms, the brake booster is able to increase the amount of pressure that you apply when you step on the pedal. But when you abuse your brakes, you put a lot of stress on the boosters, which makes them weak. Brake problems may begin to manifest. In troubleshooting such issues, you have to be keen enough to know what is actually going on. Here are some tips that you can follow to find the culprits behind booster troubles.
Brake booster fluid contamination
Contamination occurs when the rear part of the master cylinder cracks or breaks. If you look closely, the master cylinder has a tiny pin shaft and a seal that contains the brake fluid. You'll know that the seal is broken when you see leaks at the bottom of the brake booster housing. You will also notice that the rubber diaphragms in the inner housing begin to melt and warp. Most of these symptoms are hard to find. That's why you have to look closer to the boosters to identify the problem.
Hard brake pedal
If your brake pedal requires you to step on it a bit harder, you might be having problems with the brake boosters. To verify that this problem exists, try pumping the brake for a few times while the engine is off. Observe the pedal if it will move down a bit further. A well-functioning booster will pull the pedal down. If it doesn't move at all, it means that the booster is severely damaged.
When the brake pedal feels hard to step on, it's possible that there's not enough pressure in the vacuum. This happens when the brake hoses are leaking. To check the hose for cracks, you have to disconnect them from the brake booster. Do this while the engine is off. Remove the plastic valve from the hose, and then try to blow into the valve. The air should flow in one direction only. You have to replace it if you notice that the air passes on both sides.