Air Brakes Check

Question 1

*Acronym: S.A.L.E. =

Answer 1

Service Brake Test
Applied Brake Test
Low Air Warning Test
Emergency Brakes/Pop-Out Test

Question 2

*SERVICE BRAKE TEST:

Answer 2

3rd gear, Push in the set

Red Valve, Idle forward, clutch/brake, steer-wheel no pull.

Question 3

APPLIED PRESSURE TEST:

Answer 3

cant lose more then 4 psi in 60 seconds. (start In-Cab Inspection).

Question 4

*LOW AIR WARNING TEST:

Answer 4

Eng.OFF, turn on Ignition,fan Brake pedal, buzzer/light comes on between 75 - 55 PSI.

Question 5

*Emergency Brakes/POP OUT TEST:

Answer 5

Parking Valves both pop out between 45 - 20 PSI.

Question 6

SAFE START:

Answer 6

• Seat belt on,
• Parking Brakes set,
• Neutral gear.

Question 7

CHECK ABS:

Answer 7

• Turn Ignition on,
• ABS turn on/off,
• Primary/Secondary gauges working.

Question 8

*Governor Cut Out:

Answer 8

• fan below 90 psi,
• turn on Engine,
• rev up,
• air pressure stops before 140 PSI.

Question 9

*Governor Cut In:

Answer 9

• Tap brake pedal once,

- air pressure starts before below 100 PSI.

Question 10

*TUG TEST:

Answer 10

• Neutral,
• rev-up air max,
• into 3rd gear,
• dis-engage (push) Trailer (red) Parking Valve,
• Tug,
• engage (pull) Trailer Parking Valve, (leave set),
• dis-engage (push) Tractor (yellow) Parking Valve,
• Tug,
• keep in 3rd gear,
• start Service Brake Test.