Bendix Commercial Vehicle Systems BENDIX 720CC COMPRESSOR - Manual (Page 17)

A-3
Compressor with up to 25% duty cycle
Footnotes:
1. With increased air demand the air dryer cartridge needs to be replaced
more often.
2. Use the drain valves to slowly drain all reservoirs to zero psi.
3. Allow the oil/water mixture to fully settle before measuring oil quantity.
4. To counter above normal temperatures at the air dryer inlet, (and resultant
oil-vapor passing upstream in the air system) replace the discharge line
with one of a larger diameter and/or longer length. This helps reduce the
air's temperature. If sufficient cooling occurs, the oil-vapor condenses
and can be removed by the air dryer. Discharge line upgrades are not
covered under warranty. Note: To help prevent discharge line freeze-
ups, shorter discharge line lengths or insulation may be required in
cold climates. (See Bendix Bulletins TCH-008-021 and TCH-008-022,
included in Appendix B, for more information.)
Recom- Recom- Acceptable
Typical Discharge mended mended Reservoir
Compressors Line Air Dryer Reservoir Oil Contents 3
Spec'd Cartridge Drain at Regular
Replacement 1 Schedule 2 Drain Intervals
High Air Use
Low Air Use
e.g. Double/triple trailer,
open highway coach, (most)
pick-up & delivery, yard or
terminal jockey, off-highway,
construction, loggers, concrete
mixer, dump truck, fire truck.
e.g. Line haul single trailer
w/o air suspension, air over
hydraulic brakes.
e.g. Line haul single trailer
with air suspension, RV,
school bus.
5
or
less
5
or
less
8
or
less
12
or
less
Table A: Maintenance Schedule and Usage Guidelines
Recom-
mended
Every
Month -
Max of
every 90
days
Every
Month
Every 3
Years
Every 2
Years
Every
Year
I.D.
Vehicle Used for:
Column 1 Column 2 Column 3 Column 4 Column 5
Regularly scheduled maintenance is the single most important factor in maintaining the air brake charging system.
Length
6 ft. 1/2 in.
9 ft. 1/2 in.
12 ft. 1/2 in.
3/4 in. 12 ft.
BASIC test
acceptable
range:
5 oil units
per month.
See
Appendix
A.
For oil carry-over
control 4 suggested
upgrades:
5/8 in. 15 ft.
For oil carry-over
control 4 suggested
upgrades:
5/8 in. 9 ft.
For oil carry-over
control 4 suggested
upgrades:
5/8 in. 12 ft.
Compressor with less than 15% duty
cycle
Compressor with up to 25% duty cycle
Compressor with up to 25% duty cycle
Bendix ®
BASIC ™ test
acceptable
range:
3 oil units
per month.
See
Appendix
A.
For the
BASIC ™
Test Kit:
Order
Bendix
P/N
5013711
e.g. City transit bus, refuse,
bulk unloaders, low boys,
urban region coach, central
tire inflation.
Note: Compressor and/or air dryer upgrades are recommended
in cases where duty cycle is greater than the normal range
(for the examples above).
For correct compressor upgrades consult Bendix.
* See Appendix E for the Application Matrix for Bendix ®
360cc and 720cc air compressors.
No. of
Axles
See Appendix
E for Engine
Application
Matrix for
Bendix ®
360cc Single
Cylinder and
720cc Two
Cylinder
Compressors
for
International
Maxxforce ®
Big Bore
Engines