Question

Air tanks should be drained...

A) at the end of each day or shift
B) to keep sludge from clogging brake system valves
C) manually when automatic devices fail
D) all of the above

Answer 1

Air tanks should be drained regularly to remove moisture and prevent sludge buildup, which can affect the vehicle's braking system. It should be done at the end of each day or shift, to prevent sludge from clogging brake system valves, and manually when automatic devices fail.

Step-by-step explanation:

Draining air tanks is an essential maintenance activity, especially for vehicles that rely on air brake systems, such as power brakes on commercial vehicles and equipment like bulldozers. It is important for three main reasons:

1. End of each day or shift: This is to ensure that any moisture or condensation that has built up over the period of use is removed, which could otherwise lead to corrosion or freezing in cold temperatures.
2. To prevent sludge from clogging the brake system valves. Sludge is a byproduct of moisture combine with dirt and oil, that can impair the efficiency and responsiveness of the braking system.
3. It should be done manually when automatic drain devices, which some systems are equipped with, fail to function properly, ensuring reliability and safety of the brake system.

Therefore, air tanks should be drained based on all of the reasons provided above to maintain the system's integrity and functionality.