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Bendix

FCS-9700

™

Fan Clutch Solenoid

SD-03-10433

DESCRIPTION

The Bendix

FCS-9700

™

fan clutch solenoid, shown in

Figure 1, is a low air ﬂ ow solenoid used to control the fan

clutch. A thermostat controls the solenoid operation.

The fan clutch solenoid is always mounted as a stand

alone solenoid. Depending on the application, it can be a

normally closed (NC) or normally open solenoid (NO). The

integral mounting bracket comes in a right or left position

and is not removable.

OPERATION

Because this solenoid valve is used for an auxiliary air

function, a pressure protection valve, such as a Bendix

PR-3

™

valve, must be installed to protect the air brake

system. Based on the application, the solenoid will

deliver or exhaust air. See Figure 2 for a typical system

conﬁ guration.

PREVENTIVE MAINTENANCE

Important: Review the Bendix Warranty Policy before

performing any intrusive maintenance procedures. The

warranty may be voided if intrusive maintenance is

performed during the warranty period.

DELIVERY

PORT

SUPPLY PORT

FIGURE 1 - BENDIX

FCS-9700

™

FAN CLUTCH SOLENOID VALVES

EXHAUST

PORT

MOUNTING

BRACKET

(LEFT HAND)

ELECTRICAL

CONNECTOR

No two vehicles operate under identical conditions; as

a result, maintenance intervals may vary. Experience is

a valuable guide in determining the best maintenance

interval for air brake system components. At a minimum,

the solenoid should be inspected every 6 months or

1500 operating hours, whichever comes ﬁ rst, for proper

operation. Should the solenoid not meet the elements

of the operational tests noted in this document, further

investigation and service of the valve may be required.

SERVICE CHECKS

When the in-cab switch is pressed to activate or deactivate

the fan clutch, the Bendix FCS-9700

solenoid will promptly

exhaust (NO) or apply (NC). Note that the solenoid part

number label is marked with an NO or NC for identiﬁ cation.

Continuous exhausting of air pressure should not occur.

LEAKAGE CHECKS

With the air system fully charged, coat the exhaust ports

of the solenoid with a soap solution. A 1-inch bubble in

three (3) seconds is permitted (175 SCCM).

EXHAUST

PORT

SUPPLY PORT

DELIVERY

PORT

ELECTRICAL

CONNECTOR

NORMALLY OPEN (NO)

SOLENOID

NORMALLY CLOSED

(NC) SOLENOID

MOUNTING

BRACKET

(LEFT HAND)

1 2

Shrnutí obsahu

Strany 1 - SD-03-10433

1Bendix® FCS-9700™ Fan Clutch SolenoidSD-03-10433DESCRIPTIONThe Bendix® FCS-9700™ fan clutch solenoid, shown in Figure 1, is a low air ﬂ ow solenoid u

Strany 2 - INSTALLATION

2If the solenoid does not function as described above, or if leakage is excessive, it is recommended that it be replaced with a genuine Bendix® servic

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