BENDIX BW2763 User's Manual
Contents
1. 9 a pressure drop The secondary reservoir which is not being drained will stop showing a drop in pressure above 90 psi If both continue to drain this indicates that the secondary reservoir has a defective or missing pressure protection valve such as the SC PR single check protection valve Install or service the SC PR single check protection valve in the air brake system as shown in the schematic below Start the engine and charge the air brake system again Turn the engine off 10 Locate and drain the secondary reservoir As this reservoir is drained only the secondary gauge should indicate a pressure drop If both continue to drain this indicates that the primary reservoir has a defective or missing single or one way check valve Replace the existing or install a new single check valve in the primary reservoir supply port Reservoir Delivery Port 9 2 i i p ah Supply Reservoir BW2763 2009 Bendix Commercial Vehicle Systems LLC a member of the Knorr Bremse Group All Rights Reserved 5 09 Printed in U S A BA a Secondary SC PR Single Check Protection Valve WARNING Be sure to follow all the General Safety Guidelines outlined in the AD SP Service Data Sheet SD 08 2415 before performing any service on the air brake system Primary g CA Reservoir2. Bendix AD SP Air Dryer System Field Inspection Chock the vehicle wheels Start the engine and charge the air brake system to governor cut out around 30 psi The primary and secondary air gauges will start to rise As the system pressure reaches the cut out pressure the gauges will stop moving and the air dryer will purge When the air dryer purges the secondary gauge will drop 8 to 14 psi Shut off the engine and push in the yellow button to release the parking brakes Note that the gauges will drop a small amount Check the air gauges and if either gauge indicates a continued loss of pressure check the system for leaks Apply and hold the service brakes by fully depressing the brake pedal The gauges will drop a small amount Again check for a loss of pressure by watching both gauges If either gauge indicates a continued loss of air pressure check the system for leaks Release the service brakes Continue to apply and release the service brakes until the pressure drops below governor cut in approximately 100 psi Both gauges will show a drop in pressure with each brake application If the system air pressure goes below 60 psi the low pressure indicators will activate AD SP Air Dryer Purge Cycle Governor Engine Turbo Compressor 6 Start the engine and charge the air brake system again Turn the engine off 7 Locate and drain the primary reservoir Both dash air gauges will indicate 8
Download Pdf Manuals
Related Search