Question

A service brake chamber leaks when the brakes are applied. Which of these could be the cause?

(A) Excessive push rod travel
(B) A bad chamber diaphragm
(C) A broken chamber return spring
(D) A misaligned push rod

Answer 1

Possible causes of a service brake chamber leak include excessive push rod travel, a bad chamber diaphragm, and a misaligned push rod.

Step-by-step explanation:

A service brake chamber leaks when the brakes are applied. There are several potential causes for this issue:

1. The excessive push rod travel can cause the brake chamber to leak. If the push rod has too much travel, it can overextend the diaphragm and cause it to rupture, resulting in a leak.
2. A bad chamber diaphragm can also lead to brake chamber leaks. The diaphragm is a critical component responsible for creating the necessary pressure to engage the brakes. If it is damaged or deteriorated, it can cause a leak.
3. A misaligned push rod is another possible cause. If the push rod is not properly aligned, it can put excessive pressure on one side of the diaphragm, leading to a leak.

To determine the specific cause of the brake chamber leak, a thorough inspection of the brake system is necessary. This may involve checking the push rod travel, inspecting the diaphragm for damage, and ensuring the push rod is correctly aligned.