New OEM Bendix CAT C15 Compressor BA-921 BA921 20R0178 5012533 3537137 3850937

Description

CAT  air compressor pump       new        never used
Bendix BA-921
FOR AIR BRAKES ETC
new   not remanufactured
....................................(   ....can deliver or ship ......today ......)
for many things including :
cat 3126 engine ..............and others
Bendix BA-921 Compressor Cat C7 C9 5010803 191-6521 1916521
BA 921
CAT NO  191-6521
BENDIX   NO     5010803
CORE 0.00
DESCRIPTION
The function of the air compressor is to provide and maintain
air under pressure to operate devices in air brake systems.
The Bendix® BA-921® compressor is a single-cylinder
reciprocating compressor with a rated displacement of
15.8 cubic feet per minute at 1250 RPM.
The compressor consists of a water-cooled cylinder
head assembly and an integral air-cooled crankcase
assembly.
The cylinder head assembly is made up of the cylinder
head, cooling plate and valve plate assembly and uses
two sealing gaskets. Depending on the application, the
cylinder head and cooling plate may be aluminum or cast
iron. The cylinder head contains air and water ports as
well as an unloader assembly. A cooling plate is located
between the cylinder head and valve plate assemblies and
assists in cooling.
The valve plate assembly consists of brazed steel plates
which have valve openings and passages for air and engine
coolant to fl ow into and out of the cylinder head. The
compressor's discharge valves are part of the valve plate
assembly. The inlet reed valve/gasket is installed between
the valve plate assembly and the top of the crankcase.
FIGURE 1 - BENDIX® BA-921® COMPRESSOR (CUT-AWAY)
Unloader
Piston
Piston
Rod
Coolant Ports
(3 total)
Piston
Air
Intake
Unloader
Cover
Discharge
Reed
Valves (2)
Crankshaft
Cooling
Plate
Crankcase
Cover
Compressor Model,
Customer Piece Number,
Bendix Piece Number and
Serial Number shown here
The cast iron crankcase houses the piston assembly,
connecting rod, crankshaft and related bearings.
All Bendix® BA-921® compressors are equipped with a
safety valve to protect the compressor head in the event
of, for example, a discharge line blockage downstream
of the compressor. Excessive air pressure will cause the
safety valve to unseat, release air pressure and give an
audible alert to the operator. The safety valve is installed
in the cylinder head safety valve port, directly connected
to the cylinder head discharge port.
The crankcase cover located at the bottom of the crankcase
is stamped with information identifying the compressor
model, customer piece number, Bendix piece number and
serial number. See Figures 2 and 3.
FIGURE 3 - CRANKCASE BASE COVER
Splash
Shield
SD-01-690
B