A-A-58028D
2.2.3 Exhaust system. The exhaust system outlet(s) shall be directed away from personnel
accessing equipment compartments, the roof access ladder, or the cab.
2.2.4 Brake system. The vehicle shall be equipped with an all-wheel antilock brake system; the
brakes shall be fully air-actuated. Brakes shall be in accordance with Code of Federal
Regulations (CFR) 49 CFR 393.40 through 393.42(b)), 393.43, and 393.43 through 393.52. The
braking system complete with all necessary components shall include:
a. Air compressor having a capacity of not less than 15 standard cubic feet per minute
(scfm).
b. Air storage reservoir(s), each tank equipped with drain, and with safety and check
valves between the compressor and the reservoir tank.
c. Automatic moisture ejector on air storage reservoir.
d. Automatic slack adjusters on cam brakes or internal self-adjusting brakes on wedge
and disc brakes on all axles.
e. Spring set parking brakes.
All components of the braking system shall be installed in such a manner as to provide adequate
road clearance when traveling over uneven or rough terrain, including objects liable to strike and
cause damage to the brake system components. No part of the braking system shall extend below
the bottom of wheel rims, to ensure, in case of a flat tire, that the weight of the vehicle will be
supported by the rim and the flat tire and not be imposed on any component of the braking
system. Slack adjusters and air chambers shall be located above the bottom edge of the axle
carrier.
2.2.4.1 Air dryer. A replaceable cartridge desiccant air dryer shall be installed in the air brake
system. The dryer shall have the capability of removing not less than 95 percent of the moisture
in the air being dried. The dryer shall have a pre-cooler and a filter to screen out oil and solid
contaminants. The dryer shall have an automatic self-cleaning cycle and a thermostatically
controlled heater to prevent icing of the purge valve.
2.2.4.2 Compressed air shoreline. A flush mounted, checked, auto-eject compressed air shoreline
connection shall be provided to maintain brake system pressure while the vehicle is not running.
It shall be located on the exterior of the vehicle, either adjacent to the driver's door or within 6
inches of the left side front corner of the body. An air chuck shall be provided as loose
equipment.
2.2.4.3 Auxiliary braking system. The service brakes shall be augmented by one of the following
auxiliary braking systems:
8
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business