Maintenance Schedule And Usage Guidelines (Table A) - BENDIX TU-FLO 700 COMPRESSOR Manual

Table A: Maintenance Schedule and Usage Guidelines
Regularly scheduled maintenance is the single most important factor in maintaining the air brake charging system.
Vehicle Used for:
Low Air Use
Compressor with less than 15% duty
cycle
e.g. Line haul single trailer
w/o air suspension, air over
hydraulic brakes.
Compressor with up to 25% duty cycle
e.g. Line haul single trailer
with air suspension,
school bus.
High Air Use
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.
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-08-21
and TCH-08-22, included in Appendix B, for more information.)
5 For certain vehicles/applications, where turbo-charged inlet air is used, a smaller size
compressor may be permissible.
Column 1 Column 2
Typical Discharge
Compressors
No. of Spec'd
Axles
I.D.
1/2 in.
5
For oil carry-over
or control
upgrades:
less
5/8 in.
1/2 in.
5
For oil carry-over
or
control
less
upgrades:
5/8 in.
1/2 in.
8
For oil carry-over
control
or
upgrades:
less
5/8 in.
5/8 in.
12
For oil carry-over
or
control
less
upgrades:
3/4 in.
Column 3
Recom-
mended
Line Air Dryer
Cartridge
Replacement
Length
6 ft.
4 suggested
9 ft.
Every 3
Years
9 ft.
4 suggested
12 ft.
12 ft.
Every 2
Years
4 suggested
15 ft.
12 ft.
Every
Year
4 suggested
15 ft.
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 Bendix
compressors, unloader service is
recommended every 250,000 miles.
Column 4 Column 5
Recom- Acceptable
mended Reservoir
Reservoir Oil Contents
Drain at Regular
1 Schedule 2 Drain Interval
BASIC test
acceptable
range:
Recom-
3 oil units
mended
per month.
Every
See
Month -
appendix
Max of
A.
every 90
days
For the
BASIC
Test Kit:
Order
Bendix
P/N
5013711
BASIC test
acceptable
range:
5 oil units
Every
per month.
Month
See
appendix
A.
® ®
Tu-Flo 550 and 750
3
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