BENDIX SD-03-10432 Manuel D’Utilisation

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OPERATION
Because these solenoid valves are used for auxiliary 
air functions, a pressure protection valve, such as a 
Bendix
®
 PR-3
™ 
valve, must be installed to protect the 
air brake system.  The solenoids will deliver, exhaust, 
or latch air pressure to provide various functions on the 
air brake vehicle.  See Figure 2 for a typical system 
configuration.
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.
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 six (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
These service instructions are a general guideline, and 
should be consulted in conjunction with the OEM's service 
manual.
ALERT: 
When servicing accessory solenoid valves that 
control safety critical accessories (i.e., fi fth  wheel  lock, 
king pin release, etc.), ensure that all components of the 
redundant / backup system (i.e., two-step release system) 
are functioning as intended by the original equipment 
manufacturer. 
When the in-cab switches are pressed to activate or 
deactivate an accessory, the solenoids will promptly 
exhaust (NO), apply (NC), or pulse (latching) air pressure to 
an auxiliary device.  Continuous exhausting of air pressure 
should not occur.
FIGURE 2 - TYPICAL SYSTEM CONFIGURATION 
INTERAXLE 
LOCK SWITCH
DIFFERENTIAL 
LOCK SWITCH
PTO SWITCH
SUPPLY 
RESERVOIR
BENDIX
®
 SMS-9700
 ACCESSORY 
SOLENOID MANIFOLD
SUSPENSION DUMP SWITCH
PRESSURE 
PROTECTION 
VALVE
TYPICAL 
IN-CAB SWITCHES
 
 
 
 
Sample identifi cation label located on the back of the 
solenoid mounting bracket.  Each OE manufacturer will 
have different labeling requirements.