Bendix Commercial Vehicle Systems AD-IS AIR DRYER AND RESERVOIR SYSTM - Manual (Page 16)

16
BENDIX ® AD-IS ® AIR DRYER AND RESERVOIR SYSTEM
TROUBLESHOOTING CHART
SYMPTOM CAUSE REMEDY
9. “Pinging” noise excessive
during compressor loaded
cycle.
A. Single cylinder compressor with high
pulse cycles.
A. A slight “pinging” sound may be heard during the system build
up when a single cylinder compressor is used. If this sound
is deemed objectionable, it can be reduced substantially by
increasing the discharge line volume.
This can be accomplished by adding a 90 cubic inch (or
larger) reservoir between the compressor and the AD-IS air
dryer and reservoir system.
10. The air dryer purge piston
cycles rapidly in the
compressor unloaded (non-
compressing) mode.
A. Compressor fails to “unload”. A. Check air hose from the governor to the compressor for a
missing, kinked or restricted line. Install or repair the air hose.
Repair or replace the compressor unloader.
SD-08-2418 ©2014 Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group • 1/14 • All Rights Reserved