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Extra equipment and
documentation

All Vehicle Types

fire extinguisher is fully charged and
label shows that it has not expired
an approved warning device is present
first aid kit is fully equipped
all necessary documentation is in the
vehicle. This could include the vehicle
registration and valid insurance, Vehicle
Inspection Program (VIP) inspection
certificate, pre-trip inspection form,
safety fitness certificate, permits,
logbook, are valid and any other
supporting documents.
all personal protective equipment that
is required before going on a work site
is present
tools are properly secured
spare light bulbs, fuses, belts and other
required parts are present.

Trip air brake
inspection

The following information is a guide only.
As in the trip inspection of the vehicle,
the driver plays an important role in
maintaining the air brake unit. A driver
must be alert and know how the air brake
system works. Any brake problems must
be reported so the necessary repairs can
be done.

Step 1

• Chock the wheels with the vehicle on
level ground.
• Perform a visual inspection of the air
brake components.

Step 2 (Tractor protection
system)

Leave the engine off with the key in the
‘run’ position.
Push the trailer air supply valve (red
button); the park control valve (yellow
button) should be pulled.
Disconnect both air lines to the trailer.
Trailer air supply valve should “pop” out
at 40 - 60 PSI (276 - 414 kPa) or higher.
Low air pressure warning should come
on by 60 PSI (414 kPa).
Apply and hold foot or hand valve; no
air should leak from the open trailer
service line.

Step 3 (Park control valve)

Push park control valve (yellow button).
Pump the foot valve.
Park control valve should “pop” out at
20 - 45 PSI (138 - 311 kPa).
Reconnect both air lines to the trailer.

Step 4 (Supply circuit)

Start the engine and run at fast idle
around 1200 RPM.
Perform compressor build-up test; 50
to 90 PSI (345 to 621 kPa) within
3 minutes.
Low air pressure warning light should
go out by 60 PSI (414 kPa).
Build air pressure to system maximum
to confirm governor cut-out at
120 - 135 PSI (828 - 931 kPa).
Pump service brakes to reduce air
pressure until governor cuts in. Confirm
cut-in is 20 - 25 PSI (138 - 172 kPa)
less than cut-out pressure.


CHAPTER THREE TRIP INSPECTIONS 35

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