Bendix Commercial Vehicle Systems 720CC COMPRESSOR - Manual

PRODUCT
This Bendix ® 720cc twin cylinder compressor is a “discharge
line unloader” (DLU)-style compressor. The compressor
pumps continuously, unlike some compressor designs
which use an "unloader" mechanism in the compressor
head to switch from a pumping mode to a non-pumping
mode. With a DLU-style compressor, the control of air
delivery to the vehicle’s air system is managed by using a
separate discharge line unloader valve mounted in parallel
with a turbo cut-off-style of air dryer (see Figure 6).
DESCRIPTION
The function of the air compressor is to provide and
maintain air, under pressure, to operate devices in air brake
systems. The Bendix
® 720cc compressor is a twin cylinder
reciprocating compressor with a rated displacement of 31.6
cubic feet per minute at 1250 RPM.
The compressor consists of an integral water-cooled
cylinder head assembly and water-cooled crankcase.
The cylinder head assembly is made up of an aluminum
cylinder head, an aluminum cooling plate, and a cast
iron valve plate assembly. It uses two sealing gaskets.
The cylinder head contains air and water ports. A cooling
plate is located between the cylinder head and valve plate
assemblies and assists in cooling.
The valve plate assembly consists of brazed cast iron
plates which have valve openings and passages for air and
engine coolant to fl ow into, and out of, the cylinder head and
crankcase water jacket. The compressor discharge valves
are part of the valve plate assembly. The inlet reed valve/
SD-01-3131
BENDIX ® 720
CC
TWIN CYLINDER COMPRESSOR FOR INTERNATIONAL
MAXXFORCE ™ BIG BORE ENGINES
MAXXFORCE ™ is a trademark of International Engine Intellectual Property Company, LLC.
FIGURE 1 - BENDIX ® 720 CC TWIN CYLINDER COMPRESSOR
FIGURE 2 - NAMEPLATES
Bendix Part Number . . . . . . A
Customer Part Number. . . . . B
Compressor Serial Number . . C
A
B
C
720cc COMPRESSOR
BENDIX PRODUCT - ASSY IN FRANCE
BENDIX
P/N
NAV
P/N
A
B
Safety
Valve
Cooling
Plate
Cylinder
Head
Valve Plate
Assembly
Locating
Pins
Crankcase
Mounting
Face
Rear
Flange
Right Side
View