How to Properly Adjust a Brake Chamber

Before replacing a brake chamber, it's important to know its size. The most reliable way to determine the size is to measure the diameter of the brake chamber. Usually, this can be done by measuring across the inside clamp ring. This measurement will determine if the brake chamber is a standard or a long-stroke type.

Superior brake chambers are made from OE-grade 11-gauge steel and feature tempered grade 8 bolts. In contrast, inferior brake chambers use thinner steel and low-yield bolts that are prone to disfiguring under pressure. Furthermore, superior brake chambers have a dust boot and a plastic boot guard ring to prevent corrosion. They also feature high tensile plungers paired with polycarbonate spring stabilizers.

To ensure that the brake chamber applies force when needed, the air pressure in the brake system should be higher than 0.65MPa. If the air pressure is lower than this value, the brake will not apply force. It will then return to its seated position after the air is released. However, it's best to check the air pressure first before replacing the brake chamber. It's also advisable to check the tire pressure periodically to ensure proper braking.

Moreover, it's vital to check the slack adjuster of the spring brake chamber. Incorrectly adjusted spring brake chambers can cause misalignment and premature wear and tear of the diaphragm. This is due to the fact that the spring brake chamber constantly moves air.