Bendix Commercial Vehicle Systems TROUBLE SHOOTING COMPRESSOR - Manual (Page 17)

Bendix ® Air System Inspection Cup
(BASIC) Test Information
Appendix: Information about the Bendix ® BASIC ™ Test Kit (Bendix P/N 5013711)
* If the number of days since the air tanks were drained is unknown
- use the 30 day line.
** Note: Typical air dryer cartridge replacement schedule is every
3 yrs/ 300K miles for low air use vehicles and every year/100K
miles for high air use vehicles.
*** To get an accurate reading for the amount of oil collected during
a 30 day period, ask the customer not to drain the air tanks before
returning. (Note that 30-90 days is the recommended air tank
drain schedule for vehicles equipped with a Bendix air dryer that
are properly maintained.) If, in cold weather conditions, the 30
day air tank drain schedule is longer than the customer's usual
draining interval, the customer must determine, based on its
experience with the vehicle, whether to participate now, or wait for
warmer weather. See the cold weather tips in Bendix ® Bulletins
TCH-008-021 and TCH-008-022.
****Note: After replacing a compressor, residual oil may take
a considerable period of time to be flushed from the air brake
system.
17
Replace the Compressor. If under warranty, follow standard
procedures.
If, after a compressor was already replaced, the vehicle fails the
BASIC test again, do not replace the compressor**** - use the
Advanced Troubleshooting Guide to investigate the cause(s).
Oil
Units
Cup
Cup
Cup