BENDIX SD-08-2414 Manuale Utente

IMPORTANT

When servicing, note that standard Bendix AD-IP air

dryers, or air dryer cartridges, may be serviced with

PuraGuard

oil coalescing air dryer or cartridges, however,

PuraGuard (PG) oil coalescing air dryer or cartridges must

only be serviced with like replacements.

Sensitive downstream components such as automated

manual transmissions, diesel exhaust emission systems,

etc. can be damaged due to excessive oil levels. Therefore,

always replace a PG cartridge with a Bendix PG cartridge.

The AD-IP air dryer has three female pipe thread air

connections identified as follows:
Air Connection

Function/Connection

CON 4 ...........................Control Port (purge valve control

& turbo cut-off).

SUP 11 ...........................Supply Port (air in).

DEL 2.............................Delivery Port (air out).
(Not Identified) ...............Extended Purge Port

DESCRIPTION

The function of the Bendix

AD-IP

integral purge air

dryer — and the Bendix

AD-IP

integral purge air dryer

with PuraGuard

oil coalescing — is to collect and remove

air system contaminants in solid, liquid and aerosol form,

before they enter the brake system. They provide clean, dry

air to the components of the brake system which increases

the life of the system and reduces maintenance costs. Daily

manual draining of the reservoirs is eliminated.

The AD-IP and AD-IP PuraGuard oil coalescing air dryers

consist of a desiccant cartridge secured to a die cast

aluminum end cover with a single, central bolt. The end

cover contains a check valve assembly, safety valve,

heater and thermostat assembly, three pipe thread air

connections, optional extended purge port (plugged), and

the purge valve assembly. The removable purge valve

assembly incorporates the purge valve mechanism and

a turbo charger cut-off feature that is designed to prevent

loss of engine turbo-boost pressure during the purge cycle

of the air dryer. For ease of serviceability, all replaceable

assemblies can be replaced without removing the air dryer

from its mounting on the vehicle.

The AD-IP

PuraGuard oil coalescing air dryer has an

identical appearance to the standard AD-IP air dryer, but

contains a coalescing media at the inlet of the desiccant

bed. The coalescing media provides a higher level of

oil removal over the standard AD-IP air dryer. The AD-

IP PuraGuard oil coalescing air dryer has all the same

functions of the standard AD-IP air dryer and is used where

lower oil concentration levels are required. The AD-IP

PuraGuard oil coalescing air dryer can be identified by the

PuraGuard oil coalescing label shown in Figure 1 located

on the air dryer cartridge.

Early Bendix AD-IP air dryers included a “Drop In”

configuration for air systems that use either the Holset

(Cummins

) Type E or QE air compressor. For information

pertaining to this configuration see the Bendix AD-IP Air

Dryer Troubleshooting Chart at the end of the manual.