Bendix Commercial Vehicle Systems AD-9 AND AD-9 IPC AIR DRYERS 4/11 - Manual (Page 16)

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3. Reconnect the three air lines to the proper ports on the
end cover (identifi ed during disassembly).
4. Reconnect the vehicle wiring harness to the air dryer
heater and thermostat assembly connector by plugging
it into the air dryer connector until its lock tab snaps in
place.
5. Before placing vehicle back into service, perform the
Operation and Leakage Tests stated earlier in this
manual.
RETROFITTING THE BENDIX ® AD-9 ® AIR
DRYER
GENERAL
The following retrofit instructions are presented for
reference purposes only since Bendix aftermarket retrofi t
and replacement air dryers are packaged with the most up-
to-date installation instructions. The instructions packaged
with the Bendix
® AD-9 ® and AD-9 ® IPC air dryers should be
followed in lieu of those presented here.
The preceding portion of this manual deals with “in-service”
repair and/or replacement of the AD-9
® and AD-9 ® IPC air
dryers. The portion of the manual that follows is concerned
with installing an AD-9
® or AD-9 ® IPC air dryer on a vehicle
not previously equipped with one.
VEHICLE APPLICATION REQUIREMENTS
The basic application requirements presented here apply
to a standard air dryer installation. The majority of highway
vehicles in use today will meet these basic requirements
however, some may not. Examples of vehicles that may
not meet the requirements include, bulk trailer unloading
operations and other high air consumption/continuous fl ow
systems. While the AD-9
® or AD-9 ® IPC air dryer can be
used on these vehicles, the standard installation procedure
presented in this manual may require modifi cation to
assure proper operation and service life. Consult your local
authorized Bendix parts outlet or sales representative for
additional information.
1. Charge Cycle Time - The Bendix ® AD-9 ® and AD-9 ® IPC
air dryers are designed to provide clean, dry air for
the brake system. When a vehicle’s air system is used
to operate non-brake air accessories, it is necessary
to determine that during normal, daily operation the
compressor should recover from governor “cut-in” to
governor “cut-out” (usually 100 psi to 120 psi) in 90
seconds or less at engine RPMs commensurate with
the vehicle vocation. If the recovery time consistently
exceeds this limit, it may be necessary to “bypass”
the air accessory responsible for the high air usage.
Consult your local authorized Bendix parts outlet or
sales representative for additional information.
FIGURE 11 - AD-9 ® AIR DRYER CHARGE CYCLE
COMPRESSOR
10 AMP - 12V
5 AMP - 24V
SUP
CON
14 GA WIRE
TO IGNITION
& GROUND
SAFETY VALVE
DEL TO RESERVOIR
#2
RESERVOIR
#1
GOVERNOR
UNLOADER
PORT DELIVERY
SUPPLY
CONTROL
(HIDDEN)
FUSE