Anti-Lock Braking Systems (ABS) for Trucks ... - Meritor WABCO

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Section 4Removal & Installation5. Disconnect the air lines from Ports 1 (airsupply) and 2 (air discharge) of the ABS valve.Figure 4.3.Figure 4.36. Remove the two mounting capscrews andnuts.7. Remove the ABS valve.ABS Modulator Valve InstallationCAUTIONMoisture can affect the performance of allABS/ATC systems, as well as the standard brakingsystem. Moisture in air lines can cause air lines tofreeze in cold weather.Installation Guidelines: Use thread sealant correctly to avoid air lineleaks in pneumatic connections. Follow supplier recommendations.To install the ABS modulator valve:1. Install the ABS valve with two mountingcapscrews and nuts. Tighten the capscrews perthe manufacturer's recommendation.2. Connect the line to the brake chambers to port2 of the ABS valve. Connect the air supply lineto port 1 of the ABS valve.3. Connect the wiring connector to the ABS valve.4. Remove the blocks and stands.ATC Valve Removal1. Turn ignition switch to the OFF position, applyparking brake.WARNINGBlock the wheels to prevent the vehicle frommoving. Support the vehicle with safety satnds.Do not work under a vehicle supported only byjacks. Jacks can slip and fall over. Serious personalinjury can result.2. Put blocks under the front and rear tires to stopthe vehicle from moving.3. If necessary, raise the vehicle off the groundand put safety stands under the axle.4. Disconnect the wiring from the ATC valve.5. To relieve line pressure, bleed the air from theappropriate supply tank.6. Disconnect the air lines from Ports 1 (airsupply) and 2 (air discharge) of the ATC valve.7. Remove the two mounting capscrews andnuts.8. Remove the ATC valve.ATC Valve InstallationInstallation Guidelines: Use thread sealant correctly to avoid air lineleaks in pneumatic connections. Follow supplier recommendations.To install the ATC valve:1. Install the ATC valve with two mountingcapscrews and nuts. Tighten the capscrews perthe manufacturer's recommendation.2. Connect the line from the double check valve toport 2 of the ATC valve. Connect the air supplyline to port 1 of the ATC valve.3. Connect the harness connector to theATC valve.4. Remove the blocks and stands.ABS Valve PackageIf you are servicing a vehicle with an ABS ValvePackage, you will need TP-95144, Servicing theABS Valve Package. Contact Meritor WABCO at800-535-5560 for this literature.Page 29
Section 5WiringSection 5WiringThis section contains ABS wiring diagrams and connector pin callouts. If you have any questions, pleasecontact Meritor Customer Service at 800-535-5560.Figure 5.1Page 30
Page 1 and 2: Anti-Lock Braking Systems(ABS) for
Page 3 and 4: Table of ContentsAsbestos and Non-A
Page 5 and 6: NotesPage 2
Page 7 and 8: Section 1IntroductionABS Components
Page 9 and 10: Section 1IntroductionFigure 1.9Opti
Page 11 and 12: NotesPage 8
Page 13 and 14: Section 3TroubleshootingErasing a f
Page 15 and 16: Section 3TroubleshootingBlink Code
Page 17 and 18: Section 3TroubleshootingAdditional
Page 19 and 20: Section 3TroubleshootingAdditional
Page 21 and 22: Section 3TroubleshootingFigure 3.7F
Page 23 and 24: Section 3TroubleshootingTable 1 —
Page 25 and 26: Section 3TroubleshootingFinal Test
Page 27 and 28: Section 3TroubleshootingSensorsFigu
Page 29 and 30: Section 3TroubleshootingDynamometer
Page 31: Section 4Removal & Installation2. R
Page 35 and 36: Section 5WiringABS/ATC Wiring Schem
Page 37 and 38: Section 5WiringABS/ATC Wiring Schem
Page 39 and 40: Section 5WiringFront/Rear Configura
Page 41 and 42: Section 5WiringIn-Cab ECU Wiring Di
Page 43: Meritor WABCOVehicle Control System

Anti-Lock Braking Systems (ABS) for Trucks ... - Meritor WABCO

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