The relay valve portion consisting of a diaphragm operated relay valve that establishes a pressure in the brake pipe equal to that in the equalizing reservoir at the. A relay valve is an airoperated valve typically used in air brake systems to remotely control the brakes at the rear of a heavy truck or semitrailer in a. Valves that are still in your stock, please perform steps 1 and 2 as described in the enclosed service instruction. Special notes none product description manufacturer. For the aftermarket we now offer repair kits containing a valve and adapter cables, to allow an easy replacement of a defective valve which were still on a kostal wiring loom. Wabco parts wabco air suspension wabco catalogue wabco. Shop from the worlds largest selection and best deals for other commercial truck parts. Trailer abs for multiple trailer combinations wabco. Systems and components in commercial vehicles wabco. Features reliability automatically sustains pressure directed by the pilot line on a 1 to 1 ratio optional ratios shown below. The balanced internal valve functions to relieve excess. Parts of an air brake diagram the design of any air brake valve is more easily understood by recognizing some major components and parts.
The s relay valve is a pilotoperated, 3way, pneumatic pressure control valve with open exhaust. The type s relay valve is a pilot operated, 3way, pneumatic pressure control valve with open exhaust. Reading air brake diagrams tp2006 september 2001 4 part i. Since some years wabco is selling successfully solenoid modulator valves and relay valves with din bayonet connection instead of the old kostal connection. For the spare parts market, the trailer emergency valve 971 002 802 0 will be in case of pneumatic failure replaced by 971 002 805 0. In circuit iii the air supply from the reservoir 5 flows through the 22way valve which is integrated in the trailer control valve 17 to the automatic hose coupling 11 and on to the check valve, the hand brake valve 16 and the relay valve 20 into the springloaded portion of the tris.
Wabco part number 400 611 040 0 s472 500 123 0 abs relay valve modulator valve kit includes. Imperial engineering has been a proud distributor of wabco parts for many years and continues to enjoy a strong partnership. Loco will be brought to idle during a9 emergency application. This large capacity valve receives pressure signals. 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. Electrical drive and monitoring takes place via the central module of the hybrid system. Haldex product meritor wabco style abs relay valve 9730110240x. Relay valve 973 0 6 overload protection relay valve 973 011 201 0 application especially with drumbrake vehicles purpose for the protection of the wheel brake from overload added force when service and parking brake are actuated simultaneously, quick charge and venting of the spring brake cylinders tristop cylinders. 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. Wabco websites use cookies and other tracking technologies to improve your browsing experience and provide you with services available on the website.
Remanufactured meritor wabco style abs valve assemblies rear axle valve packs 02. Used to apply and release service brakes on tractor or trailer. Haldex north america l20243 aftermarket antilock braking systems abs catalog. Cover may be rotated without affecting warranty or performance.
The large capacity of this valve makes it an ideal volume booster. When it comes to wabco air suspension control components and associated systems, imperial engineering has become the first point of enquiry for an increasing number of bus and coach operators. View and download bendix r12r14 relay valves manual online. Note, not all valves have all the components shown and described in this booklet. Receives a signal from the control valve or independent brake valve to allow main reservoir air to the brake cylinders to provide a brake application. Volvo fh 12380 radl91 4 x 2 rigid municipal vehicle 2. Relay valve for valve pack, remanufactured meritor wabco style abs valve, abs. 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.
The hcu is mounted to the vehicle frame rail with two brackets. A combined spring brake modulating relay valve integrates the functions of a relay valve and a modulating valve. Piston the piston is the heart of the control valve. Qty 1 wabco part number 9730110240 valve, qty 1 wabco 8305020764 grease pack, qty 2 part nu. The reason for this is that during the pressureincrease phase of the abs control the abs solenoid valve has both solenoids energised whereas the abs relay valve uses only one.
To find out more about which cookies we use and how you can block them, please read here. Meritor wabco abs relay valve part number s4725000072 replaces s9730110240, s9730110220, s9730110280 and s9730110260 relay valves the 4725000072 kit includes. Wabco proportional relay valves andor trailer control valves, that you sold to your customers please inform your customers that purchased proportional relay valve andor trailer control valve. It comprises the proportional solenoid valve, relay valve and pressure sensor. The electrical actuation and monitoring are carried out by the central module. This equip ment employs as the major components a 26c brake valve, a 26f. Bulletin m939 hand held abs diagnostic tool instruction manual infocenter english 623 kb.
The choice depends on the braking system and in particular the response time. Bendix antilock braking systems and traction control. A modulating piston includes surfaces selectively pressurized by the. Volvo fh 12380 radta8 4 x 2 rigid municipal vehicle. To help you identify the proper replacement parts, we have included the oem part numbers. Abs relay valves as well as abs solenoid valves can be used. Relay valve four port single control line with integral bracket. Of course, some guys actually talk their way out of speeding tickets. Bendix valves, compressors, air dryers, wheel end components and more, call 1800airbrake 18002472725 or visit some guys use cheap parts and never have a breakdown. It receives pressure signals from a remote control valve and repeats this pressure with a greater rate of flow to the component being controlled. For aftermarket, meritor wabco sells only wet modulator valves valves prefilled with brake fluid. R12r14 relay valves control unit pdf manual download. The housing includes a valve assembly movable in response to air pressure provided to selected ports in the housing.
A relay piston selectively communicates with a control port and a primary brake circuit port. Wabco 4006110400 relay valvemodulator pack with adapter. Abs relay valve 1st and 2nd relay valves 3rd relay valve with retarder control integrated speed switch iss optional sensors 2 or 4 optionally flanged to compact unit diagnosis 24n 24s supply. Wabco relay valves and components for trucks, trailers, busses, tractors and other heavy vehicles equipped with air brakes. R8 relay valves incorporate an integral double check valve with a balance port connection which provides both an anticompounding or quick exhaust feature.