9
www.bendix.com 1-800-AIR-BRAKE (1-800-247-2725)
Maintenance Schedule and Usage Guidelines
Regularly scheduled maintenance is the single most
important factor in maintaining the air brake charging
system. The table below is an introduction to the
maintenance intervals for air brake charging systems. See
your compressor and/or air dryer Service Data sheet for
more information.
If you are concerned that a compressor may be passing
oil, use the BASIC
™
Test Kit: Order Bendix P/N 5013711.
Compressor Maintenance Guidelines
Air Dryer
Maintenance Schedule
Air Compressor Spec’d
Discharge Line Length
Reservoir
Draining
2
1
3
4
a. 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 certain vehicles/applications, where
turbo-charged inlet air is used, a smaller size compressor may
be permissible.
b. 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-08-21 and
TCH-08-22, for more information.
c. With increased air demand the air dryer cartridge needs to be
replaced more often.
Low Air Use
e.g. Line haul single
trailer without air
suspension, air over
hydraulic brakes.
High Air Use
High Air Use
(5 or less axles)
(5 or less axles)
(8 or less axles) (12 or less axles)
Discharge line: 6 ft. @
½ in. I.D. (oil carry-over
control suggested
upgrade
b
: 9ft. @
5
/8 in.)
2
Discharge line: 9 ft. @
½ in. I.D. (oil carry-over
control suggested
upgrade
b
: 12ft. @
5
/8 in.)
Discharge line: 12 ft.
@ ½ in. I.D. (oil carry-
over control suggested
upgrade
b
: 15ft. @
5
/8 in.)
Discharge line: 15 ft.
@
5
/8 in. I.D. (oil carry-
over control suggested
upgrade
b
: 15ft. @ ¾ in.)
Low Air Use
Bendix
®
BA-921
™
air compressor
Bendix
®
Tu-Flo
®
550 air compressor
Bendix
®
BA-922
™
air compressor
Examples of Typical Compressors Spec’d
a
1 Bendix
®
Tu-Flo
®
750 air compressor
DuraFlo
™
596
air compressor
4
3
Drain Reservoirs Every Month - 90 Days Drain Reservoirs Every Month
Replace Air Dryer Cartridge Every 3 Years
c
Replace Every 2 Years
c
Use the BASIC
™
Test Kit:
Order Bendix P/N 5013711
BASIC
™
test acceptable range:
3 oil units per month.
Use the BASIC
™
Test Kit:
Order Bendix P/N 5013711
BASIC
™
test acceptable range:
5 oil units per month.
OilOil
OilOil
Oil
PassingPassing
PassingPassing
Passing
Concerns?Concerns?
Concerns?Concerns?
Concerns?
Compressor with up to 25%
duty cycle
(builds air pressure up to 25%
of the engine running time.)
e.g. Line haul single
trailer with air
suspension,
schoolbus.
Compressor with up to
25% duty cycle
e.g. Double/triple trailer,
open highway coach/RV,
(most) pick-up & delivery,
yard or terminal jockey,
off-highway, construction,
loggers, concrete mixer,
dump truck, fire truck.
Compressor with up to
25% duty cycle
e.g. City transit bus,
refuse, bulk unloaders,
low boys, urban region
coach, central tire
inflation.
Replace Every Year
c
Compressor with less than
15% duty cycle
(builds air pressure 15% or less
of the engine running time.)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Commentaires sur ces manuels