BENDIX TU-FLO 501 AIR COMPRESSOR Spécifications Page 4

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FIGURE 7- PAPER AIR STRAINER
DRY ELEMENT-PLEATED
FIGURE 8- COMPRESSOR INTAKE ADAPTER
DRY ELEMENT-PLEATED PAPER AIR
STRAINER
EVERY 20,000 MILES OR 800 OPERATING HOURS
Remove the spring clips from either side of mounting baffle
and remove the cover. Replace the pleated paper filter and
remount the cleaned cover making sure the filter is in
position. Be sure to replace the air strainer gasket if the
entire air strainer is removed from the compressor intake.
(NOTE: Some compressors are fitted with compressor intake
adapters which allow the compressor intake to be
connected to the engine air cleaner.)
In this case, the compressor receives a supply of clean air
from the engine air cleaner. When the engine air filter is
changed, the compressor intake adapter should be checked.
If it is loose, remove the intake adapter, clean the strainer
plate, if applicable, and replace the intake adapter gasket,
and reinstall the adapter securely. Check line connections
both at the compressor intake adapter and at the engine air
cleaner. Inspect the connecting line for ruptures and replace
it if necessary.
EVERY 6 MONTHS, 1800 OPERATING HOURS
OR AFTER EACH 50,000 MILES
Remove the discharge head fittings and inspect the
compressor discharge port and discharge line for excessive
carbon deposits. If excessive buildup is noted in either, the
discharge line must be cleaned or replaced and the
compressor checked more thoroughly, paying special
attention to the air induction system, oil supply and return
system, and proper cooling. If necessary, repair or replace
the compressor. Check for proper belt and pulley alignment
and belt tension. Adjust if necessary, paying special
attention not to over tighten the belt tension. Check for noisy
compressor operation, which could indicate a worn drive
gear coupling or a loose pulley. Adjust and/or replace as
necessary. Check all compressor mounting bolts and
retighten evenly if necessary. Check for leakage and proper
unloader mechanism operation. Replace if defective in any
way.
EVERY 24 MONTHS, 7200 OPERATING HOURS
OR AFTER EACH 200,000 MILES
Perform a thorough inspection as indicated below and
depending upon the results of this inspection or experience,
disassemble the compressor, clean and inspect all parts
thoroughly, repair or replace all worn or damaged parts
using only genuine Bendix replacements or replace the
compressor with a genuine Bendix remanufactured unit.
IMPORTANT - Should it be necessary to drain the engine
cooling system to prevent damage from freezing, the
cylinder head of the compressor must also be drained.
GENERAL SERVICE CHECKS
Inspection
It is of the utmost importance that the compressor receives
a clean supply of air. The air strainer must be properly
installed and kept clean. If the compressor intake is
connected to the engine air cleaner, supercharger, etc.,
these connections must be properly installed and
maintained. Check the compressor mountings to be sure
they are secure. Check the drive for proper alignment, belt
tension, etc.
Inspect the oil supply and return lines. Be sure these lines
are properly installed and that the compressor is getting
the proper supply of oil, and just as important, that the oil is
returning to the engine. Check the coolant lines to and
from the compressor and see that the cooling fins on the
crankcase are not clogged with dirt, grease, etc. Check
the unloader mechanism for proper and prompt operation.
Operating Tests
Vehicles manufactured after the effective date of FMVSS
121, with the minimum required reservoir volume, must have
a compressor capable of raising air system pressure from
85-100 P.S.I. in 25 seconds or less. This test is performed
with the engine operating at maximum governed speed.
The vehicle manufacturer must certify this performance on
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