background image

8

FIGURE 11: M-32

 AND M-32QR

 MODULATORS DIN SYMBOL

BW2335 © 2004 Bendix Commercial Vehicle Systems LLC  5/2004  Printed in U.S.A.   All rights reserved.

Port Designation

Supply

1

Delivery 2

Exhaust

3

Electrical Control

Source

41

Hold

42

Exhaust

43

MODULATOR INSTALLATION

1.

Install all air line fittings and plugs, making certain thread
sealing material does not enter the valve.

2.

Install the assembled valve on the vehicle.

3.

Reconnect both air lines to the valve using the identifi-
cation made during VALVE REMOVAL step 5.

4.

Reconnect the electrical connector to the modulator.

5.

After installing the valve, test all air fittings for excessive
leakage and tighten as needed.

TECHNICAL INFORMATION

Porting

1

Supply Port (from brake, relay or quick

 release valve) - 1/2" NPT

1

Delivery Port (brake actuator) - 1/2" NPT

Optional:

1

Push-to-connect for 1/2" tubing

2

NPT supply, PTC delivery

Solenoid Voltage:

12 Volts DC Nominal, optional
24 Volt available.

Weight:

1.7 pounds

Maximum Operating Pressure: 150 psi Gauge

Operating Temperature Range:

-40 to 185
degrees
Fahrenheit

Pressure Differential: 1 psi maximum (supply to delivery)

Mounting Hole Sizes:  0.33" diameter through body

Summary of Contents for M32 M32QR ANTILOCK MODULATOR ASSY

Page 1: ...bers on the same side of a tandem axle the modulator is sometimes mounted ahead of a quick release valve which provides quick exhaust of service applications during normal braking In the case of indiv...

Page 2: ...K A wiring harness connects the vehicle modulators to the controller TheABS controller is able to simultaneously and independentlycontroltheindividualmodulators Whenvehicle power is supplied to theABS...

Page 3: ...Hold Diaphragm Spring Brake Chamber Brake Valve Exhaust Diaphragm Exhaust Valve Exhaust Port M 32 Modulator M 32QR Modulator Bias Valve Delivery Port Supply Port Supply or Hold Diaphragm Spring Brake...

Page 4: ...reapplication of air pressure to the brake actuator The solenoids in the modulator are controlled independently by the antilock controller ECU An experienced driver of a vehicle without ABS who encoun...

Page 5: ...solenoid allows application air to flow to the control side of the exhaust diaphragm which then seals the exhaust passage With the exhaust diaphragm seated further exhaust of brake chamber air pressur...

Page 6: ...ice technicians 1 Park the vehicle on a level surface and block or chock the wheels Release the parking brakes and build the air system to governor cut out 2 Turn the engine ignition key to the OFF po...

Page 7: ...it may whip Never remove a component or plug unless you are certain all system pressure has been depleted 8 Use only genuine Bendix replacement parts components and kits Replacement hardware tubing h...

Page 8: ...cation made during VALVE REMOVAL step 5 4 Reconnect the electrical connector to the modulator 5 After installing the valve test all air fittings for excessive leakage and tighten as needed TECHNICAL...

Reviews: