BENDIX SD-08-2412 manual Every 10,800 hours 300,000 miles or 36 months

Every 900 operating hours or 25,000 miles or every three (3) months:

1.Check for moisture in the air brake system by opening reservoirs, drain cocks, or valves and checking for presence of water. If moisture is present, the desiccant may require replacement; however, the following conditions can also cause water accumulation and should be considered before replacing the desiccant:

A.An outside air source has been used to charge the system. This air did not pass through the drying bed.

B.Air usage is exceptionally high and not normal for a highway vehicle. This may be due to accessory air demands or some unusual air requirement that does not allow the compressor to load and unload (compressing and non-compressing cycle) in a normal fashion. Check for high air system leakage. If the vehicle vocation has changed it may be necessary to upgrade the compressor size. Refer to Appendix A, Table A and the column titled Vehicle Vocation.

C.The air dryer has been installed in a system that has been previously used without an air dryer. This type of system will be saturated with moisture and several weeks of operation may be required to dry it out.

D.Location of the air dryer is too close to the air compressor. Refer to the Locating Bendix® AD-9®and AD-9®IPC Air Dryer On Vehicle section and Appendix A, Table A, column 2 for discharge line length; or

E.In areas where more than a 30 degree range of temperature occurs in one day, small amounts of water can accumulate in the air brake system due to condensation. Under these conditions, the presence of small amounts of moisture is normal and should not be considered as an indication that the dryer is not performing properly.

Note: A small amount of oil in the system may be normal and should not, in itself, be considered a reason to replace the desiccant; oil stained desiccant can function adequately.

2.Check mounting bolts for tightness. Re-torque to 270–385 inch pounds.

3.Perform the Operation & Leakage Tests listed in this publication.

Oil removal requirements for air brake quality vary by vehicle manufacturer. Because vehicle vocation and maintenance can influence when the AD-9®IPC air dryer cartridge requires replacement, each fleet should modify their replacement schedule based on experience. The change out interval will be extended if the compressor passes a low level of particles, and the interval will be reduced if excessive carbon particles are delivered to the dryer inlet. Higher compressor build up times at idle and

AD-9® / AD-9®IPC

AIR DRYER

LOWER

MOUNTING

BRACKET

END COVER

FEMALE

CONNECTOR

MALE

CONNECTOR

LATCH MUST BE

INSERTED UNTIL

IT SNAPS OVER

TAB ON MATING

CONNECTOR

SIDE VIEW END VIEW

A two lead, 12 inch, wire harness with attached weather resistant connector is supplied with all retrofit and replacement Bendix® AD-9®and AD-9®IPC air dryers. Connect one of the two leads of the wire harness to the engine kill or ignition switch. The remaining lead of the wire harness must be connected to a good vehicle ground. A fuse should be installed in the power carrying wire; install a 10 amp fuse for 12 volt heaters and a 5 amp fuse for a 24 volt heater. Use 14 AWG wire if it is necessary to lengthen the wire harness provided. Make certain all wire splices are waterproofed. Tie wrap or support all electrical wire leading to the AD-9®or AD-9®IPC air dryer.

FIGURE 6 - HEATER AND THERMOSTAT CONNECTOR

water or oil in downstream reservoirs indicate an AD-9®IPC air dryer desiccant cartridge may need to be replaced.

Every 10,800 hours; 300,000 miles or 36 months:

1. Rebuild the air dryer including the desiccant cartridge.

Note: The desiccant change interval may vary from vehicle to vehicle. Although typical desiccant cartridge life is three years, many will perform adequately for a longer period of time. In order to take maximum advantage of desiccant life and assure that replacement occurs only when necessary, it is important that Operation & Leakage Tests be performed.

WARNING!

This air dryer is intended to remove moisture and other contaminants normally found in the air brake system. Do not inject alcohol, anti-freeze, or other de-icing substances into or upstream of the air dryer. Alcohol is removed by the dryer, but reduces the effectiveness of the device to dry air. Use of other substances can damage the air dryer and may void the warranty.

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