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Hadley SAMS, Руководство по эксплуатации для владельца

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SAMS Manifold & Valves 

 

This document is written to provide an introduction to the manifold and valves used on Blue Bird’s Smart 
Air Management System (SAMS).  This discussion will create a basic understanding of the valve 
functionality.  The knowledge gained by understanding the document content will provide service 
personnel with information to diagnose and repair related system problems. 
 

Theory of Operation 

The manifold is an electro-pneumatic device used to control the air flow within the SAMS system.  The 
valves are two-position and of a coil actuated design.  This application requires two valves per air bag for 
ride height control, totaling twelve (12) valves in all.  One valve serves as a “fill” valve and allows system 
air to pass through the manifold “into” the air bag. This causes the air bag to inflate, thereby increasing 
the vehicle ride height.  The second valve serves as an “exhaust” valve and allows air to pass “from” the 
air bag, through the manifold, into the atmosphere. This causes the air bag to deflate, thereby decreasing 
the vehicle ride height. 
 

 

 

 

 

 

 
 
 
 
 
 
 
 
 
 

Fill Valves 
(Inflation) 
 

Exhaust 
Valves 
 

Manifold 
Ports -  

to 

the Vehicle 
Air Bags 

 
 

Manifold 
Air Supply 
Port 
 
 

Manifold 
Exhaust 
Port 
 
 

Tag Curb 
Pressure 
Transducer 
 

Inclination 
Sensor 
“X” Axis 

 

 

Inclination 
Sensor 
“Y” Axis 

 

 

Tag DVR 
Pressure 
Transducer 

Drive Curb 
Pressure 
Transducer 

Drive DVR 
Pressure 
Transducer 

Содержание SAMS

Страница 1: ...Smart Air Management System And Self Leveling System Owner Service Manual 3 04 2005 Table of Contents ...

Страница 2: ...rmal Mode 4 Raised Mode 5 Lowered Mode 5 Tag Dump Mode 6 Self Leveling Mode 8 Visual Indicators 10 Error Codes 10 SAMS Manifold Valves 12 Theory of Operation 12 Valve Servicing 14 Manifold Error Code Identification 16 Electrical Testing 17 ...

Страница 3: ...e angle sensors will be mounted on the vehicle frame in a 4 point configuration rear 2 front 2 The wire harnessing will provide the necessary connections for providing DC electrical control power and ground to the SAMS system from a suitable vehicle power source provide the necessary height sensor connectors provide the pneumatic manifold wiring interface provide the necessary color coded wires fo...

Страница 4: ...rface Once the mode has been deactivated the ECU will automatically turn off the LED Raising the entire vehicle can be chosen by the vehicle operator to increase the clearance between the entire vehicle and the ground It may be necessary for the operator of the vehicle to select this mode when situations arise where the body of the vehicle must be raised to avoid or to overcome an undercarriage ob...

Страница 5: ... indication the mode is active The ECU will automatically return the entire vehicle to the normal ride height when the speed exceeds 5MPH or the operator momentarily depresses the raise pushbutton located on the user interface Once the mode has been deactivated the ECU will automatically turn off the LED Tag Dump Mode This mode of operation is used to control the air pressure in the tag axle of th...

Страница 6: ...e LOWER Button Press once to partially lower the vehicle to decrease overall height Speed 10 MPH The Lower light flashes or Press and hold button until the lower light remains on to lower the vehicle to lowest overall height Speed 5 MPH Press RAISE switch once to return to normal height Lower light off RAISE Button Press once to raise the rear of the RV for increased bumper clearance The Raise lig...

Страница 7: ...CU will provide a visual indication of this process to the vehicle operator by turning on the indicator arrows located to the left of the SLS pushbutton The two arrows reference the X and Y axis of the vehicle The top arrow points left to right represents the Y vehicle axis long axis front to back and the bottom arrow points top to bottom represents the X vehicle axis short axis side to side The a...

Страница 8: ... RV is near level Flashing Green Adjustment is possible and within range Flashing Amber Marginal conditions possible self level Solid Amber Excessive slope Self leveling may not be possible Press once to activate the Self Leveling process Press once again to switch the self leveling off Note Parking brake must be applied for self leveling adjustments to occur Level Indicator Light X or Short Axis ...

Страница 9: ...econd series of flashes to represent the second number of a two digit code if applicable the second number will be followed by another short pause and then provide a third series of flashes to represent a three digit code For example one flash followed by a short pause and then three additional flashes would illustrate a code 13 In the event of more than one detected problem the ECU will cycle thr...

Страница 10: ...Suspension Dump LED 213 two hundred thirteen Valve Manifold Connector 1 Male Disconnected 214 two hundred fourteen Valve Manifold Connector 2 Female Disconnected 333 three hundred thirty three CANbus Data Not Read Note Each time the engine is started the suspension indicator will be illuminated for approximately 5 seconds During this time interval the ECU will gather information from the system se...

Страница 11: ...cation requires two valves per air bag for ride height control totaling twelve 12 valves in all One valve serves as a fill valve and allows system air to pass through the manifold into the air bag This causes the air bag to inflate thereby increasing the vehicle ride height The second valve serves as an exhaust valve and allows air to pass from the air bag through the manifold into the atmosphere ...

Страница 12: ...n thereby affecting system operation and performance Should an inflation valve plunger become contaminated or the plunger stick open it is possible for air to leak past the plunger and continuously fill the associated air bag This would cause a corner of the vehicle to continuously creep upwards while the vehicle is in operation and result in the SAMS system constantly making corrections to lower ...

Страница 13: ...alve assembly so as not to lose the mounting hardware or the O ring that is installed in the respective manifold surface machined groove The O ring and mounting hardware create a positive seal between the valve assembly mounting plate and the valve mounting surface of the manifold Note If the O ring is lost or damaged or the valve is not properly attached to the manifold by using all of the previo...

Страница 14: ...ription 2 Open Short ANA 0 Angle Sensor Drive DVR Angle Sensor 11 1 Angle Sensor Drive Curb Angle Sensor 12 2 Pressure Sensor Drive DVR Pressure Transducer 13 3 V ref Internal Circuit Board Reference 14 4 Pressure Sensor Drive Curb Pressure Transducer 21 5 Pressure Sensor Tag DVR Pressure Transducer 22 6 Pressure Sensor Tag Curb Pressure Transducer 23 7 Inclination Sensor X Axis Inclination Transd...

Страница 15: ...ated error code listed in the previous chart Error Code 113 Error Code 111 Error Code 22 Error Code 13 Error Code 23 Error Code 31 Error Code 24 Error Code 21 Error Code 121 Error Code 123 Error Code 131 Error Code 132 Error Code 133 Error Code 134 Error Code 124 Error Code 122 Error Code 114 Error Code 112 ...

Страница 16: ...t as indicated by displaying 1OL the coil requires replacement as well Note Prior to disconnecting the manifold wiring harness to perform the continuity check be sure power has been removed from the SAMS system ECU This can be accomplished by disconnecting the white wiring harness connector in the vicinity of the manifold assembly This prevents the SAMS system from operating when the engine is not...

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