Bendix Commercial Vehicle Systems AD-SP SYSTEM PURGE AIR DRYER 10/04 - Manual (Page 15)

15
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 psi.
LOCATING BENDIX ® AD-IP ® AIR DRYER ON THE
VEHICLE
1. The Bendix ® AD-IP ® 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-IP air dryer must not
be exposed to direct wheel splash. If the air dryer is
located directly behind the axle, a mud flap is required.
2. Maintain a minimum clearance of 12” between the
air dryer and any potential heat source (e.g. vehicle
exhaust). If this is not feasible, a heat shield must be
used.
3. Make certain that adequate clearance from moving
components (e.g. drive shaft, suspension, pitman arm,
etc.) is provided.
4. Locate the air dryer on the vehicle so that a minimum of
1/2” clearance above the air dryer is available to allow
desiccant cartridge removal. A minimum of 8” clearance
below the air dryer is required to allow for desiccant
cartridge bolt removal.
5. When choosing the mounting location for the AD-IP
air dryer, note the discharge line length requirements
stated under the heading Connecting the Air Lines,
elsewhere in this manual.
Important Note: Under normal operating conditions,
the maximum inlet air temperature for the AD-IP air
dryer is 160 degrees Fahrenheit.
6. If possible, locate the AD-IP air dryer so that the purge
exhaust does not expel contaminants on vehicle
components. If this is not feasible, the purge exhaust
may be redirected away from the vehicle by installing
an optional special exhaust cover (piece no. 112609).
The exhaust cover is available as a separate item from
authorized Bendix ® parts outlets. A 1” ID hose can be
clamped on this special exhaust cover to allow the
exhaust to be redirected.
MOUNTING THE AD-IP AIR DRYER
(Refer to Figure 8)
1. Install the lower mounting bracket (9) on the AD-IP
air
dryer. To accomplish this, it will be necessary to choose
two, of the four available, mounting holes. To determine
which two holes to utilize to attach the lower bracket,
take into consideration the piping connections required
to install the AD-IP air dryer and use those that will best
position the unit for ease of installation. Utilizing the
two cap screws (7) and washers (8), provided with the
AD-IP air dryer retrofit unit, attach the lower mounting
bracket and torque to 300–360 in-lbs.
Note: The bracket mounting holes in the end cover
may not be pre-tapped. In this case the mounting bolt
will self-tap the holes on initial installation.
2. Saddle Bracket: Assemble the mounting strap (4) and
saddle bracket (5) as illustrated, by utilizing the 5/16”
cap screw (1) and sleeve nut (3) provided. Place the
upper bracket strap in the end cover channel provided
for it, then install the saddle bracket and secure the
strap to the saddle bracket using the cap screw (1)
and sleeve nut (3) provided. Install, but do not tighten
the cap screw at this time. Orient the strap and saddle
bracket (5) so that it is in a flat plane with the lower
bracket. Torque the 5/16” nut to 60-100 in-lbs to tighten
strap onto the shell.
Cable Bracket: Press the isolators (33) onto the upper
bracket (31) as shown in Figure 10. Place the air dryer
onto the upper bracket (31). Insert the cable assembly
(32) through the wing hole of the upper bracket (31),
around the air dryer and then again through the bracket
(31) on the opposite wing hole. Note: some applications
may require the button end of the cable be placed on
the opposite wing.
When the air dryer is installed, make sure that there
isn’t any interference between the cable ends and the
vehicle mounting bracket. The cable assembly (32)
should be placed in the end cover channel when routed
around the air dryer.
Install the washer (35) and locknut (34) on the threaded
end of the cable assembly (32), adjacent to the upper
bracket wing hole. Tighten the locknut (34) until the
washer (35) makes contact with the upper bracket (31).
Do not torque the locknut (34) at this time.
Orient the cable assembly and upper bracket (31) so
that it is in a flat plane with the lower bracket (9). This
can be accomplished in one of two ways: either off, or
on the vehicle as follows:
Off the vehicle: Place the air dryer assembly on a
flat surface with the mounting brackets (1 & 9) down.
Secure the brackets to the surface with C-clamps then
tighten the cable locknut (34) to 140 in-lbs. Use a
wrench on the hex side of the threaded end to prevent
the cable from twisting.
On the vehicle: Bolt the brackets (1 & 9) to the vehicle
air dryer bracket then tighten the cable locknut (34)
to 140 in-lbs. Use a wrench on the hex side of the
threaded end to prevent the cable from twisting.
3. Components and location used to mount the AD-IP air
dryer on the vehicle must be rigid enough to minimize
air dryer vibration.
4. Mount the air dryer on the vehicle using 3/8” bolts (grade
5 min.) and washers. Torque to 25 ft-lbs (300 in-lbs.)