BENDIX SD-08-2402 Service Intervals, Operational and Leakage Tests, Disassembly and Cleaning

SPRING BRAKE

CYCLONE DURADRAIN™
TRAILER WATER
SEPARATOR
	CONTROL
	SUPPLY	ABS UNIT OR
PLACEMENT OF OPTIONAL		RELAY VALVE
	SR-5™SPRING
SUPPLY LINE CYCLONE	BRAKE VALVE
DURADRAIN™ TRAILER WATER
SEPARATOR
FIGURE 3 - TRAILER SCHEMATIC

SERVICE INTERVALS

Service intervals are dependent on specific environmental and operational factors that control the amount of contamination removed by the Cyclone DuraDrain™ unit. Experience should be used to determine how frequently the unit must be serviced. As a recommended minimum, every 12 months, 100,000 miles or 3,600 operating hours, perform the Operational and Leakage Tests. Inspect the Cyclone DuraDrain™ unit for unrestricted airflow and blockage from debris collection. Remove the purge nut and service according to the “Disassembly and Cleaning” instructions. If the purge nut is damaged or improperly functioning, replace with the purge nut service kit.

OPERATIONAL AND LEAKAGE TESTS

Connect the tractor air lines to the trailer being tested. Block all wheels or hold the vehicle by means other than

air brakes.

Supply Line (Emergency)

1.Build tractor and trailer to full system pressure by placing the park control valve and the trailer air supply valve in the charge position.

2.When full system pressure is reached, and the spring brakes are fully released, apply a soap solution to the supply and delivery ports of the Cyclone DuraDrain™ trailer water separator. A 1” bubble in 5 seconds is permissible.

Control Line (Service)

1.Build tractor and trailer to full system pressure by placing the park control valve and the trailer air supply valve in the charge position.

2.When full system pressure is reached, and the spring brakes are fully released, apply a soap solution to the supply and delivery ports of the Cyclone DuraDrain™ trailer water separator. Apply the brakes and check for leaks. A 1” bubble in 5 seconds is permissible.

DISASSEMBLY AND CLEANING

Periodically inspect and clean the Cyclone DuraDrain™ trailer water separator. Do not disconnect or remove the Cyclone DuraDrain™ body.

1.Disconnect both upstream glad-hands from the trailer or dolly before beginning work on the Cyclone DuraDrain™ trailer water separator. All servicing can be done without disconnecting the air lines from the body.

2.Remove the 1-3/8” hex purge nut assembly with o-ring from the bottom of the leaking Cyclone DuraDrain™ trailer water separator. Remove the o-ring from the purge nut.

AIR CLEANING

A rubber pressure-activated valve is located under the screen in the purge nut. The screen is permanently installed and cannot be removed. Attempts to remove the screen and access the pressure-activated valve will damage the purge nut necessitating its replacement.

WARNING NOTE: an air gun blowing backward through the drain hole in the bottom of the nut can dislodge the pressure-activated valve necessitating replacement of the purge nut.

The most common cause of air leakage is sandy debris on the valve seat inside the purge nut. Dislodging and ejecting the debris can restore leak-free operation.

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