BENDIX TU-FLO 750 COMPRESSOR Dados de serviço - Página 5

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DISCHARGE LINE TEMPERATURE

When the temperature of the compressed air that enters

the air dryer is within the normal range, the air dryer can

remove most of the charging system oil. If the temperature

of the compressed air is above the normal range, oil as

oil-vapor is able to pass through the air dryer and into the

air system. Larger diameter discharge lines and/or longer

discharge line lengths can help reduce the temperature.

The air dryer contains a ﬁ lter that collects oil droplets, and

a desiccant bed that removes almost all of the remaining

water vapor. The compressed air is then passed to the air

brake service (supply) reservoir. The oil droplets and the

water collected are automatically purged when the governor

reaches its "cut-out" setting.

For vehicles with accessories that are sensitive to small

amounts of oil, we recommend installation of a Bendix

™

PuraGuard

oil coalescing ﬁ lter, designed to minimize

the amount of oil present.

LUBRICATION

The vehicle's engine provides a continuous supply of oil

to the compressor. Oil is routed from the engine to the

compressor oil inlet. An oil passage in the compressor

crankshaft allows oil to lubricate the connecting rod crank-

shaft bearings. Connecting rod wrist pin bushings and

crankshaft ball bearings are spray lubricated. An oil return

line connected from the compressor drain outlet to the

vehicle engine crankcase allows for oil return. On ﬂ ange

mounted models, the oil drains back directly to the engine

through the mounting ﬂ ange.

FIGURE 7 - LUBRICATION (BASE MOUNT MODEL SHOWN)

OIL

INLET

OIL

OUTLET

COOLING

Air ﬂ owing through the engine compartment from the

action of the engine's fan and the movement of the vehicle

assists in cooling the compressor. Coolant ﬂ owing from the

engine's cooling system through connecting lines enters the

head and passes through internal passages in the cylinder

head and is returned to the engine. Proper cooling is

important in maintaining discharge air temperatures below

the maximum recommended 400 degrees Fahrenheit.

Figure 8 illustrates the various approved coolant ﬂ ow

connections. See the tabulated technical data in the back

of this manual for speciﬁ c requirements.

WATER

OUT

FIGURE 8 - COOLING

AIR INDUCTION

There are three methods of providing clean air to the

Tu-Flo

750 compressor:

1. Naturally aspirated Local Air Strainer - Compressor

utilizes its own attached air strainer (polyurethane

sponge or pleated paper dry element).

2. Naturally aspirated Engine Air Cleaner - Compressor

inlet is connected to the engine air cleaner or the

vacuum side (engine air cleaner) of the supercharger or

turbocharger.

3. Pressurized induction - Compressor inlet is connected

to the pressure side of the supercharger or turbo-

charger.

See the tabulated technical data in the back of this manual

for speciﬁ c requirements for numbers 2 and 3 above.

WATER

OUT

(1 PORT

ONLY)

WATER OUT

WATER

(1 PORT

ONLY)

WATER