Class 1 Practice

Results

#1. How can you tell how much air pressure is in the service reservoirs?

(a) Check the application pressure gauge on the dashboard.

(b) Check the reservoir pressure gauges on the dashboard.

Do (a) or (c).

The reservoir pressure gauge is connected to the service reservoir. It shows how much air pressure is in the reservoir. In a dual-circuit system, there will be either two gauges, one for each circuit’s service reservoir, or a single gauge with two needles. The gauges are mounted on the instrument panel so you can monitor reservoir air pressures while you drive.