BENDIX BW2398 User Manual

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Symptom: 
What it may indicate: 
What you should do:  
(i)  Poorly  filtered  inlet  air  (poor  air  
quality to compressor).
(j)  Governor malfunction or setting.
(k) Compressor malfunction.
4.0  Oil in Supply 
or Service  
Reservoir*
(air dryer installed)
(continued)
 
Check  for  leaking,  damaged  or  defective 
compressor  air  inlet  components  (e.g. 
induction line, fittings, gaskets, filter bodies, 
etc.).  Repair inlet components as needed. 
Note: Dirt ingestion will damage compressor 
and is not covered under warranty.
 
Go to Test 4 on page 25.
 
If  you  found  excessive  oil  present  in  the 
service reservoir in step 4.0 (b) above and 
you did not find any issues in steps 4.0 (c) 
through 4.0 (j) above, the compressor may 
be passing oil. 
  Replace compressor.  If still under warranty, 
follow normal warranty process.  Note: After 
replacing  a  compressor,  residual  oil  may 
take  a  considerable  period  of  time  to  be 
flushed from the air brake system.
Other (cont.)
Inspect the 
engine air
cleaner.
**  SAE J2024 outlines tests all air brake system pneumatic 
components need to be able to pass, including minimum 
levels of tolerance to contamination.
5.0  Oil present 
at valves (e.g. at 
exhaust, or seen 
during servicing).
Air brake system valves are required 
to tolerate a light coating of oil. 
 
A small amount of oil does not affect SAE 
J2024** compliant valves. 
 
Check  that  regular  maintenance  is  being 
performed and that the amount of oil in the 
air tanks (reservoirs) is within the accept-
able range shown on the Bendix
®
 BASIC 
test cup (see also column 5 of Table A on 
page 13). Return the vehicle to service.
For oil-sensitive systems, see page 12.
Genuine 
Bendix 
valves are 
all SAE 
J2024 
compliant.
*If a maintained Bendix
®
 PuraGuard
®
 system filter or Bendix
®
 PuraGuard QC
 oil coalescing 
filter is installed, call 1-800-AIR-BRAKE (1-800-247-2725) and speak to a Tech Team member.
Crankcase Flooding
Consider  installing  a  compressor  bottom  drain  kit 
(where available) in cases of chronic oil passing where 
all other operating conditions have been investigated.  
Bendix  compressors  are  designed  to  have  a  'dry' 
sump and the presence of excess oil in the crankcase 
can lead to oil carryover.