background image

TP-0357
Revised 06-19

(16579)

Page 2

Copyright WABCO, Inc. 2019

Printed in the USA

Figure 1

Installation

Guidelines

NOTE: 

If you are installing the inversion relay valve on an existing 

installation, you must first remove the old valve. Refer to the valve 
replacement procedure in this bulletin for instructions.

1.

Mount the valve.

Refer to the vehicle manufacturer’s specifications for 
specific mounting requirements.

Select a flat mounting surface. The mounting surface must 
be within 0.010-inch (0.25 mm) of flat.

For best timing results, mount the valve near the spring 
brakes it will serve.

Mount the valve with the exhaust port facing down within 
30

°

 of vertical.

Use 8 mm mounting hardware to attach the valve to the 
mounting surface. Tighten to 15 

±

 2 lb-ft (20 

±

 3 N

m). 

Figure 2. 

@

Figure 2

2.

Connect the air lines as indicated in Table A. Valve ports are 
identified in Figure 3.

Make sure all unused supply and delivery ports are 
plugged.

Look at the air line installation to make sure all air lines are 
correctly installed and that all connections are secure.

Figure 1

4003018b

ACC

PURGE

TANK

WET

TANK

PRIMARY

RESERVOIR

SECONDARY
RESERVOIR

AIR

FROM

INLET

FILTER

SUPPLY LINE

PARKING BRAKE

CONTROL LINE

Figure 2

EXHAUST

4003006a

PRODUCT

IDENTIFICATION

TAG

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