Peterbilt 325 2017, Operator'S Manual

Page: 268 / 392

AIR SYSTEM
and non-compressing cycle) in a
normal fashion or it may be due to
excessive leaks in the air system.
•
In areas where more than a 30°
F (17° C) range of temperature
occurs in one day, small amounts
of water can accumulate in
the air brake system due to
condensation. Under these
conditions, the presence of small
amounts of moisture is normal
and should not be considered as
an indication that the dryer is not
performing properly.
•
An outside air source has been
used to charge the air system.
This air did not pass through the
drying bed.
Overhaul
Maintenance intervals typical for
on-highway operation would be 2 - 3
years, 350,000 miles or 10,800 hours.
Maintenance intervals typical for high
duty cycle usage such as transit bus,
refuse hauler, dump truck, cement
mixers and off-highway operation
would be 1 year, 100,000 miles or
3,600 hours.
NOTE
Review the warranty policy before
performing any maintenance proce-
dures. An extended warranty may
be voided if unauthorized mainte-
nance is performed during this pe-
riod.
Bendix® AD-IS Series Air Dryer
Your vehicle may be equipped with a
Bendix® AD-IS series air dryer. Any
air dryer replacement should be made
with an identical component.
WARNING!
If a different air dryer brand or model
is installed on the vehicle other than
what was originally installed, it could
cause the air system to not perform
correctly unless the full air system
design is reviewed and modifica-
tions made to comply with Federal
Motor Vehicle Safety Standards
(FMVSS) 121 - Air Brake Systems.
Failure to abide by this warning and
maintain compliance to FMVSS 121
could cause loss of vehicle control
and may lead to death or serious
personal injury.
The AD-IS Series air dryer has
incorporated into its design various
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Y53-6060-1C1 (03/17)
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