Question

The cut in pressure on a heavy-duty truck air brake system would be?

1) 100 psi
2) 150 psi
3) 90 psi
4) 125 psi

Answer 1

Option 1 and 4: The typical cut-in pressure for a heavy-duty truck air brake system is usually between 100 psi and 125 psi, but the exact value should be confirmed by consulting the manufacturer's guidelines or the vehicle's manual.

Step-by-step explanation:

The cut-in pressure on a heavy-duty truck air brake system is typically set by the manufacturer and can be different for each vehicle. However, a common cut-in pressure for many heavy-duty trucks is around 100 psi to 125 psi. This is the pressure at which the air compressor will start to operate to replenish the air tanks.

It's critical to maintain proper air pressure for the brake system to function effectively and safely. For a specific truck, one should always refer to the manufacturer's guidelines or the truck's manual to find the exact cut-in pressure required.