BENDIX M-40QR Service Data - Page 7

Browse online or download pdf Service Data for Control Unit BENDIX M-40QR. BENDIX M-40QR 8 pages. Pressure modulator valves

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MODULATOR REMOVAL

1. Locate the modulator that will be replaced and clean

the exterior.

2. Identify and mark or label all air hoses and their

respective connections on the valve to facilitate ease

of installation.

3. Disconnect both air lines and the electrical connector.

4. Remove the modulator from the vehicle.

5. Remove any air hose fittings present. These fittings

will be re-used in the replacement modulator.

MODULATOR INSTALLATION

1. Install all previously-removed air hose fittings, 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

identification marks made during step 5 of Modulator

Removal.

4. Reconnect the electrical harness to the modulator.

5. After installing the valve, test all air fittings for excessive

leakage and tighten as needed.

Bendix

M-40HF

™

Modulator

Figure 9 - Bendix M-40QR & M-40HF Modulators DIN Symbol

Packard

Bayonet

Terminal

Name

TECHNICAL INFORMATION

Mode

Port

Options

Solenoid

Voltage

Weight

Maximum

Operating

Pressure

Operating

Temperature

Range

Pressure

Differential

Mounting

Hole Sizes

Figure 8 - Bendix

Valve

Function

Port

Source

Hold

Exhaust

Modulator Type

Supply Port (from brake, relay, or

quick release valve): 1/2" NPT

Delivery Port (brake actuator):

•

1/2" NPT

•

Push-to-connect for 1/2" tubing

12 Volts DC Nominal, optional 24 Volt

available

1.35 pounds

150 psi gauge

-40°F (40°C) to 185°F.

[A short-term operating temperature

of 230°F (110°C) for up to 10% of the

valve's lifetime is acceptable.]

1 psi maximum (supply to delivery)

0.33" diameter through body

M-40QR

& M-40HF

™

Bendix

M-40QR

Modulator

Function

Supply

Delivery

Exhaust

Modulators

™