TrailMax FWTD-50-T, Руководство пользователя

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page 8
FWTD-50-T (17.5)
Operation
1.6 Uncaging Air Brakes
Air brakes are designed with a safety feature called a spring brake, so that if no air
pressure is present in the system springs will apply force to the brake system linkages
and apply the brakes. To allow the trailer to be moved during shipping a release tool
assembly is installed in each of the spring brake cans to prevent the brakes from being
applied. These release tools MUST be removed before the trailer can be put into ser-
vice.
INOPERATIVE BRAKE SYSTEM!
The spring brake release tool assemblies must be removed from the
spring brake cans before the trailer is put into service. The brake system
WILL NOT FUNCTION with the release tools installed, and the trailer will
roll freely until they are removed.
To remove the release tool assemblies use the following procedure (see illustration
on next page):
1. Hook up trailer to tow vehicle, and/or put air to the air brake system on the trailer.
2. Apply approximately 70 psi of air pressure to the brake system; this should be
sufficient to remove the spring pressure and loosen the release tool assemblies. NOTE:
The release tools can be removed without applying air pressure to the brake system,
although the removal process is easier if air is applied.
3. Slowly loosen the nut on the release tool until the spring pressure has been
released.
4. Rotate the release tool approximately turn to align the tee with the slots and pull
out.
5. Install the release tool assembly in the storage position on the bottom of the can
for future use.
5. Cover the release tool assembly port with the attached rubber seal.
6. Repeat this procedure for all spring brake cans.
WARNING
!