Group 59 antilock brake system rockwell wabco with e version ecu design and function design and function antilock brake system 4s4m abs with traction control a air lines b electrical lines 1 wheel speed sensors 2 abs modulator valves 3 relay valve 4 e version ecu system description the rockwell wabco antilock braking system. Hydraulic compact unit hcu assembly without ecu s478 407 9 2 new s478 407 992 7 service exchange replacement parts include the hcu assembly, ecu, reservoir, accumulators, pressure supply valve, parking brake switch, relay valve, and appropriate. The pressurized piston b keeps outlet f closed and through the depressed valve stem c keeps inlet e open. Basic leveling valve, no mounting bracket or linkage. All product codes and part numbers displayed within this website are for cross reference purposes only. J4725000120x rebuilt 4s2m j4725000210x j4725000110x rebuilt 2s1m non diagnostic port s4005001010n j4005001010xecu j4005001010x new. Piston the piston is the heart of the control valve. If the vehicle has meritor wabco abs, refer to meritor wabco maintenance manual 28 c version abs or 30 d version abs. Maintenance manual mm0888 rssplus trailer abs with. Read and understand all instructions and procedures before you begin to service components. We had a wabco abs relay valve that was leaking through. Use a 6 mm allen wrench to tighten the allenhead bolts to 15 lbft 1820 n m. The relayair valve is a pneumatic or hydraulic piloted, threeway valve that changes the air passages through it when pressure of a predetermined amount.
If troubleshooting the system with the prolink 9000, use the instruction booklet that is supplied with the wabco dversion abs cartridge. Since some years wabco is selling successfully solenoid modulator valves and relay valves with din bayonet connection instead of the old kostal connection. Wabco easystop basic maintenance manual pdf download. The s relay valve is a pilotoperated, 3way, pneumatic pressure control valve with open exhaust. Wabco maintenance manual mm0401 revised 0818 about this manual this manual contains maintenance procedures for wabcos hydraulic power brake hpb system for trucks, tractors and buses. Wabco part number 400 611 040 0 s472 500 123 0 abs relay valve modulator valve kit includes. Wabco part number 400 611 040 0 s472 500 123 0 abs relay valvemodulator valve kit includes. After installation there should be no gap between the sensor and the tooth wheel. Abs relay valve package 4007848a attach the abs modulator valve s to the relay or quick release figure 4.
The balanced internal valve functions to relieve excess pressure, or to maintain pressure against demand. Brake pipe auxiliary equipment a1x reduction relay valve, part no. Trailer abs for multiple trailer combinations wabco. We stock and can supply a wide range of air valves, these include air lift valves, spring brake control valve, r12 relay valve, pr2 pressure protection valve, brass fittings and much more. Reading air brake diagrams tp2006 september 2001 4 part i. Relay valve 973 0 8 operation in driving position, chamber b is continuously supplied with compressed air through port 41 from the double release valve or prev. Volvo fh 12380 radl91 4 x 2 rigid municipal vehicle 2. Wabco is the proven market leader in trailer controls offering fleet and owneroperators a robust portfolio of antilock braking systems abs and roll stability support rss for virtually any trailer application. Features reliability automatically sustains pressure directed by the pilot line on a 1 to 1 ratio optional ratios shown below. Ebs electronically controlled brake system in motor. Attach the abs relay valve cable to the ecu with the wabco id face down. Read and observe all caution and warning safety alerts that precede instructions or procedures you. Feb 19, 2015 replacing air dryer filter and complete air dryer unit.
Hydraulic compact unit hcu assembly without ecu s478 407 9 2 new s478 407 992 7 service exchange replacement parts include the hcu assembly, ecu, reservoir, accumulators, pressure supply valve, parking brake switch, relay valve, and appropriate hardware kits. Replacement kits contain replacement valve, bolts, orings and lubricant except atc valve. Filling the hydraulic power brake master cylinder reservoir. The large capacity of this valve makes it an ideal volume booster.
The 26l brake equipment is a combination automatic and independent locomotive brake of modern design which incorporates all of the operating features necessary for the control of freight and passenger train braking systems. Volvo fh 12380 radta8 4 x 2 rigid municipal vehicle. Truck, tractor and bus abs wall chart abs valve package part number abs modulator valve part number relay valve part number support literature. Maintenance manual mm0888 rssplus trailer abs with roll. Wabco parts catalogue 2014 trailer components 27 coupling red emergency line 40 abs solenoid relay valve steering axle 28 coupling yellow service line 41 brake chamber 29 abs power supply cable 42 spring brake 30 abs diagnostic cable 43 spring brake 31 line filter 32 line filter 33 park shunt valve 34 relay emergency valve 35 abs ecu 36. Port 21 receives the full pressure from the reservoir through port 1. Air brake relay valve rebuild tips and replacement youtube. Mpparts meritor wabco 973 298 009 0 service relay valve. Ecusingle modulator valve assembly for damage that may have occurred during shipping or storage. Parts of an air brake diagram the design of any air brake valve is more easily understood by recognizing some major components and parts. Special notes none product description manufacturer. This diagram shows the j1 relay valve in operation when applied to a locomotive brake system. Abs relay valve package 4007848a attach the abs modulator valves to the relay or quick release figure 4. The valve actuation contains power transistors output stages which are actuated by signals from the main circuit and switch the current for actuating the control valves.
Unfollow wabco abs valve to stop getting updates on your ebay feed. Provides an alternative to separate valve installation by combining a service brake relay valve with two abs modulator valves and one atc valve for d and eversion ecus only. Meritor wabco maintenance manual mm0888 revised 11 about this manual this manual contains maintenance procedures for meritor wabcos rssplus trailer abs with roll stability support. Wabco 4006110400 relay valvemodulator pack with adapter. Relay valve for valve pack, remanufactured meritor wabco style abs valve, abs we are doing scheduled site maintenance. Page 47 plug any unused ports on the replacement valves.
Wabco air system protector video english since launch in 2001, the wabco air system protector has been the market leading cartridge. Page 47 plug any unused ports on the replacement valve s. Wabco is the trailer abs leader with an install base of. Drawings showing diagrammatic views of air brake valves, show them on one plane. Install the wheel hub carefully, so that the how to install a standard abs tooth wheel pushes against the sensor as you relay valve adjust the wheel bearings. Wabco reserves the right to revise the information presented or to discontinue the production of parts described at any time. Wabco will only guarantee the safety, reliability and performance of their prod. Abs relay valves as well as abs solenoid valves can be used.
Wabco inversion relay valve ir2 technical bulletin. Wabco is the trailer abs leader with an install base of more than 6. Literature maintenance manuals wabco north america. The choice depends on the braking system and in particular the response time. Replacing air dryer filter and complete air dryer unit. Systems and components in commercial vehicles wabco. Pb962 truck, tractor and bus abs parts book mm30 dversion abs for trucks, tractors and buses mm0112 eversion abs for trucks, tractors and buses tp0186 12volt system d and eversion abs blink code card tp94157 truck, tractor and bus.
Note, not all valves have all the components shown and described in this booklet. Meritor wabcos enhanced easystop trailer abs with plc. This product catalogue is only for general information. Service instructions for components submerged in flood waters. Relay portion of the automatic make valve consists of a relay valve which repeats equalizing reservoir pressure to the brake pipe.
Verify that the retainer clips have not been bent or otherwise damaged. This equip ment employs as the major components a 26c brake valve, a 26f. Rexroth type s relay valves on distributor to industry, inc. Meritor wabco reserves the right to revise the information presented or to discontinue the production of parts described at any time. Buy meritor wabco 973 298 009 0 service relay valve single control line with integral bracket 9732980090 online. The ebs relay valve consists of a relay valve and two solenoid valves air admittingair exhausting valve, a redundant valve and a pressure sensor. Meritor wabco pneumatic antilock braking system 42. Wabco cab and chassis leveling valves technical bulletin tp969. The relay valve 37 is actuated by the loadsensing valve 34 and the compressed air flows to the brake chambers 29 on the front axle. Haldex product meritor wabco style abs relay valve 9730110240x. It receives pressure signals from a remote control valve and repeats this pressure with a greater rate of flow to the component being controlled.
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