BENDIX TCH-008-038 manual NUT Removal, AIR Cleaning, Solvent Cleaning

Bulletin No:TCH-008-038 Page: 2 of 2

NUT REMOVAL

Disconnect both upstream gladhands from the trailer or dolly before beginning work on the Cyclone DuraDrain™ trailer water separator.

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

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.

2.Gently tap the purge nut upside down and sideways to dislodge possible debris taking care not to damage the screen.

3.Blow air in the normal downward direction through the screen to remove debris out the drain hole. See the warning note above.

4.Inspect the o-ring for damage and reinstall the purge nut into the Cyclone DuraDrain™ body using hand tools with low to moderate torque (150 in-lbs).

5.Reapply air pressure and determine if the leak has been eliminated.

SOLVENT CLEANING

If air leakage was not eliminated by air cleaning, the purge nut may be cleaned in a mineral spirits parts washer.

6.Remove the hex purge nut and wash in mineral spirits parts washer. Flow solvent downward through the screen and out the drain hole.

7.For stubborn debris, the purge nut may be soaked in the parts washer overnight to dissolve persistent deposits.

8.Reinstall the purge nut into the Cyclone DuraDrain™ body using hand tools with low to moderate torque (150 in-lbs).

9.Reapply air pressure and determine if the leak has been eliminated.

10.If the air leak persists, replace the entire purge nut with Bendix service kit piece number 5013824.

© 2006 Bendix Commercial Vehicle Systems LLC All rights reserved. 3/2006 Printed in U.S.A.