Service manual
11
LOCATING AD-9
™
AIR DRYER ON VEHICLE
1. The AD-9
™
air dryer must be mounted vertically (purge
exhaust toward road surface) outside the engine
compartment in an area of air flow while the vehicle is in
motion. The AD-9
™
air dryer must not be exposed to
direct wheel splash (located behind axle mud flap is
acceptable).
2. Locate the AD-9
™
air dryer as close to the first (supply)
reservoir as possible.
3. Do not locate the AD-9
™
air dryer near heat producing
components such as the vehicle exhaust and make
certain adequate clearance from moving components
(e.g. drive shaft, suspension, pitman arm, etc.) is
provided.
4. Locate the AD-9
™
air dryer on vehicle so that a minimum
of 11 inches (28 cm) clearance below the end cover is
available to allow servicing. Alternatively, provide access
to the bracket bolts so the unit may be removed for
servicing.
5. When choosing the mounting location for the AD-9
™
air
dryer, note the discharge line length requirements stated
under the heading Connecting the Air Lines, elsewhere
in this instruction sheet.
Important Note: Under normal operating conditions, the
maximum inlet air temperature for the AD-9
™
air dryer is
160 degrees Fahrenheit.
MOUNTING THE AD-9
™
AIR DRYER
1. To install the lower mounting bracket on the AD-9
™
air
dryer, it will be necessary to remove and discard two of
the end cover bolts and lock nuts. To determine which
end cover bolts to utilize to attach the lower bracket,
take into consideration the piping connections required
to install the AD-9
™
air dryer and use those that will best
MOUNTING
BRACKET
SADDLE
mechanisms and/or utilize a compressor discharge line
unloader valve have special AD-9
™
air dryer installation
requirements. Consult your local authorized Bendix parts
outlet or sales representative for additional information.
4. Air Compressor Size - Although the AD-9
™
air dryer can
be used in conjunction with larger compressors, it was
designed primarily for units rated for up to 17 CFM. It is
recommended that when using the AD-9
™
air dryer with
a compressor which has a rated displacement exceeding
17 CFM that an authorized Bendix parts outlet or Bendix
marketing representative be contacted for assistance.
5. Holset “E or QE” Type Air Compressors - In order for the
AD-9
™
air dryer to function properly when installed with
the Holset Type “E or QE” compressor, several
specialized Holset components are required. Consult
your local authorized Holset parts outlet or sales
representative for additional information.
6. Use of Standard or Extended Purge AD-9
™
Air Dryer -
Use the following guidelines:
Total Vehicle Reservoir
Volume
Requirement
Less than 9,000 cu. in. .................. Standard AD-9
™
Air Dryer
9,000 - 12,500 cu. in. ........................... Exte nded Pu
r
ge AD-9
™
Ai
r
D
r
ye
r
Greater than 12,500 cu. in. ............ Contact Bendix Rep. or
Bendix Engineering
VEHICLE PREPARATION
1. Park the vehicle on a level surface and prevent movement
by means other than the brakes.
2. Drain all reservoirs to 0 p.s.i. (0 kPa).
2- 1
/
8
"
END
COVER
LOWER
BRACKET
EXTRA
LONG
BRACKET
CAP SCR EW
←←
←←
←
←←
←←
←
SPECIAL
WASHER
FIGURE 9 - LOWER BRACKET INSTALLATION
FIGURE 10 - UPPER MOUNTING BRACKET AND STRAP
5
/
16
"
CAP
SCREW
MOUNTING
BRACKET STRAP
SLEEVE NUT
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