Symptom:
What it may indicate:
What you should do:
22
(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)
ð
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.
ð
Go to Test 4 on page 29.
ð
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.
ð
A small amount of oil does not affect SAE
J2024** compliant valves.
ð
Check that regular maintenance is being
performed and that the amount of oil in the
air tanks (reservoirs) is within the
acceptable range shown on the Bendix
®
BASIC test cup (see also column 5 of Table
A on page 17). Return the vehicle to
service.
For oil-sensitive systems, see page 16.
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.