3 Point Brake Check Flashcards
Step 1
Bring PSI down to About 90 or below to begin the test.
Step 2
Allow the air pressure to build until the air governed cut out between 120-140 PSI and the needle in my gauge stop that indicate me it’s stabilized.
Step 3
Turn the engine off and then back into the on Possession with out starting the engine and my gauge will sweep.
Step 4
Push in both Brake Valves.
Steep 5
Allow air pressure to stabilize. ( the needle will stop )
Step 6
Firmly apply and Hold the service brake for one minute to Ensure they I have not lost More than 4 PSI in a Combination Vehicle equipped with Air Brake on the Trailer.
Step -7
FAN BREAK DOWN TO ABOUT 60 psi
Until my low Air pressure auto warning light and buzzer come on.
Step 8
Fan Break down to about 40 psi Untill Both Valves pop out Verify that Both Break Valves popped out concluded 3 pt Break test