Specifications

The front wheels shall include stainless steel lug nut covers and stainless steel baby moons shipped loose
with the chassis for installation by the apparatus builder. The baby moons shall have cutouts for oil seal
viewing when applicable.
The rear wheels shall include stainless steel lug nut covers and band mounted spring clip stainless steel
high hats shipped loose with the chassis for installation by the apparatus builder.
The lug nut covers, baby moons, and high hats shall be RealWheels
®
brand constructed of 304L grade,
non-corrosive stainless steel with a mirror finish. Each wheel trim component shall meet D.O.T.
certification.
BRAKE SYSTEM
A rapid build-up air brake system shall be provided. The air brakes shall include a two (2) air tank,
three (3) reservoir system with a total of 4152 cubic inch of air capacity. A floor mounted treadle valve
shall be mounted inside the cab for graduated control of applying and releasing the brakes. An
inversion valve shall be installed to provide controlled service brake application during the unlikely
event of primary air supply loss. All air reservoirs provided on the chassis shall be labeled for
identification.
The rear axle spring brakes shall automatically apply in any situation when the air pressure falls below
25 PSI and shall include a mechanical means for releasing the spring brakes when necessary. An
audible alarm shall designate when the system air pressure is below 60 PSI.
A four (4) sensor, four (4) modulator Anti-lock Braking System (ABS) shall be installed on the front and
rear axles in order to prevent the brakes from locking or skidding while braking during hard stops or on
icy or wet surfaces. This in turn shall allow the driver to maintain steering control under heavy braking
and in most instances, shorten the braking distance. The electronic monitoring system shall incorporate
diagonal circuitry which shall monitor wheel speed during braking through a sensor and tone ring on
each wheel. A dash mounted ABS lamp shall be provided to notify the driver of a system malfunction.
The ABS system shall automatically disengage the auxiliary braking system device when required.
The speedometer screen shall be capable of reporting all active defaults using PID/SID and FMI
standards.
Additional safety shall be accommodated through Automatic Traction Control (ATC) which shall be
installed on the single rear axle. The ATC system shall apply the ABS when the drive wheels loose
traction. The system shall scale the electronic engine throttle back to prevent wheel spin while
accelerating on ice or wet surfaces.
A momentary rocker style switch shall be provided and properly labeled “mud/snow”. When the
switch is pressed once, the system shall allow a momentary wheel slip to obtain traction under extreme
mud and snow conditions. During this condition the ATC light and the light on the rocker switch shall
blink continuously notifying the driver of activation. Pressing the switch again shall deactivate the
mud/snow feature.
FRONT BRAKES