Bendix Commercial Vehicle Systems 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 suffi cient 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, fi re 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
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 infl ation.
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 more an 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