Pre Trip In-Cab & Air-Brake

In-Cab Checklist

Seat Belt – Secure, not frayed, latches properly.

Steering Wheel – No excessive play (max 10° or about 2 inches).

Horn – City and air horn operational.

Mirrors – Clean, adjusted, no damage.

Windshield – Clean, no illegal cracks.

Wipers/Washers – Operate correctly.

Oil Pressure Gauge – Builds and holds normal pressure.

Voltmeter – Charging system working.

Water Temperature Gauge – Normal operating range.

Air Pressure Gauges – Building properly.

Fuel Gauge – Adequate fuel level.

ABS Light – Cycles on and off properly.

Parking Brake Controls – Tractor and trailer valves functioning.

Heater/Defroster – Working properly.

Service Brake Pedal – Firm, no excessive movement.

Air Brake Test

Air Compressor

Securely mounted

No leaks

Belt properly tensioned (if equipped)

Air Lines

Not cut, cracked, or leaking

Properly connected

Air Tanks

Securely mounted

Drained of moisture

Air Pressure Gauges

Working properly

Building pressure normally

Low Air Warning Device

Activates before 60 PSI

Parking Brake Valve

Pops out between 20-45 PSI

Service Brake Test

Vehicle does not pull left or right

Stops smoothly