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®
®
®
Bendix
AD-IS
and AD-IS
and Reservoir Systems
RES
GOVERNOR
RESERVOIR (2)
PRESSURE
PROTECTION
VALVES (4)
PURGE
RESERVOIR
UNL
GOVERNOR
UNLOADER (2)
22
SEC
DELIVERY TO
SECONDARY
RESERVOIR
21
PRI
DELIVERY TO PRIMARY
RESERVOIR
FIGURE 1 - BENDIX
®
AD-IS
DESCRIPTION
The function of both the Bendix
Air Dryer) air dryer and reservoir system and the Bendix
AD-IS
®
PuraGuard
®
oil coalescing air dryer and reservoir
system is to collect and remove air system contaminants
in solid, liquid and aerosol form before they enter the brake
system and to provide—as a module—heavy vehicles with
an integrated vehicle air dryer, purge reservoir, governor
and a number of the charging valve components in a
module. These components have been designed as an
integrated air supply system.
Both air dryer and reservoir systems provide clean, dry air
to the components of the brake system which increases
the life of the system and reduces maintenance costs.
The necessity for daily manual draining of the reservoirs
is eliminated.
®
PuraGuard
PURGE VALVE
DESICCANT
CARTRIDGE
(STANDARD SHOWN)
GOVERNOR
AIR DRYER
EXH
GOVERNOR
PART NUMBER
EXHAUST
STAMPED HERE
®
AND AD-IS
®
PURAGUARD
®
AD-IS
®
(Integrated Solution
®
(Oil Coalescing) Air Dryer
DESICCANT
CARTRIDGE
(PURAGUARD
OIL COALESCING
SHOWN)
SAFETY VALVE
MOUNTING
BOLTS (3)
HEATER /
THERMOSTAT
1
IN
PRESSURE PROTECTION
SUPPLY FROM
COMPRESSOR
®
OIL COALESCING AIR DRYER AND RESERVOIR SYSTEMS
Air Connection
Port ID
1
®
IN
21
PRI
22
SEC
24
AUX 1
23
AUX 2
UNL
RES
EXH
TABLE 1 - PORT DESIGNATIONS
®
MOUNTING
HOLES (4)
AUX1
AUXILIARY
DELIVERY PORTS
VALVES (4)
Function/
Connection
Inlet Port (air in)
Delivery Port Out (to Primary Reservoir)
Delivery Port out (to Secondary Reservoir)
Auxiliary Delivery Port (air out)
Auxiliary Delivery Port (air out)
Unloader Control Air (D-2A
Governor)
™
Common Reservoir Pressure (D-2A
™
Governor Exhaust
23
AUX2
AUXILIARY
DELIVERY
PORT
24
(4)
QTY
1
1
1
4
1
2
Governor)
2
1
1
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Table of Contents
Related Manuals for BENDIX adis
Summary of Contents for BENDIX adis
- Page 1 Connection The function of both the Bendix ® AD-IS ® (Integrated Solution ® Air Dryer) air dryer and reservoir system and the Bendix Inlet Port (air in) AD-IS ® PuraGuard ® oil coalescing air dryer and reservoir Delivery Port Out (to Primary Reservoir)
- Page 2 SECONDARY NOTE 1 RESERVOIR AUXILIARY PORTS (TO ACCESSORIES) DIAGRAM SHOWS ALL PRESSURE PROTECTION VALVES OPEN. ® ® FIGURE 2 - BENDIX AD-IS AIR DRYER AND RESERVOIR SYSTEM CHARGE CYCLE The Bendix ® AD-IS ® PuraGuard ® oil coalescing air dryer Note: Unless otherwise stated in this manual, AD-IS air ®...
- Page 3 “turbo” boost clean and dry the air, deliver air to the vehicle’s primary ® ® pressure during the purge cycle of the Bendix AD-IS reservoir, secondary reservoir and accessories, and control dryer and reservoir system. For ease of maintenance, all the compressor/dryer charge cycle.
- Page 4 AIR DRYER AND RESERVOIR SYSTEM The governor unloads the compressor by allowing air pressure to fi ll the line leading to the compressor unloader OPERATION: GENERAL mechanism. This suspends the delivery of compressed air The Bendix ® AD-IS ® air dryer and reservoir system ®...
- Page 5 C. The location of the air dryer and reservoir system tightness. See Figure 1. Re-torque the three air dryer is too close to the air compressor. Refer to Bendix bolts to 360–420 in-lbs and the four purge reservoir Specifi cation BW-110-A / Appendix B, for discharge bolts to 300–360 in-lbs.
- Page 6 2. Build up system pressure to governor cut-out and note approximately 90° Fahrenheit and again check the ® ® that the Bendix AD-IS air dryer purges with an audible resistance. The resistance should exceed 1000 escape of air. Watch the system pressure and note the ohms.
- Page 7 (with an audible burst of air), followed immediately by approximately 30 See Bendix publication BW5057 "Air Brake Handbook." seconds of air fl owing out of the purge valve. 3. “Fan” the service brakes to reduce system air pressure to governor cut-in.
- Page 8 LOCK TABS SPLASH SHIELD COVER SPLASH SHIELD BRACKET FIGURE 7 - SPLASH SHIELD BRACKET AND COVER - (EXPLODED VIEW)
- Page 9 (1/IN). Remove the safety valve from the Bendix AD-IS air dryer (see Figure 1 for location). Note that a short puff of trapped air may vent from the safety valve port when removing the valve.
- Page 10 3. At the other end of the check valve body, the spring is before servicing the air dryer. installed over the set of four straight guide lands. When This procedure does not require removal of the Bendix ® the spring has been pushed to the correct location, the AD-IS ®...
- Page 11 - Single vehicle - 1 psi/minute. - Tractor trailer - 3 psi/minute. Using soap solution, test vehicle for leakage at fi ttings, drain valves and system valves and any accessories (i.e. air suspension) connected to the Bendix AD-IS air dryer ®...
- Page 12 (outside air not passing pass through air dryer. through air dryer). C. Excessive air usage - Air dryer not C. Refer to Bendix Advanced Troubleshooting Guide for Air Brake Compressors (BW1971) for proper application of the compatible with vehicle air system Bendix AD-IS air dryer and reservoir system.
- Page 13 ® air dryer. C. Compressor passing excessive oil. C. Check for proper compressor installation; if symptoms persist, replace compressor. Refer to Bendix Advanced Troubleshooting Guide for Air Brake Compressor (BW1971). 9. “Pinging” noise excessive A. Single cylinder compressor with high A.
- Page 14 BW2234 © 2011 Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group • 07/11 • All Rights Reserved...