BENDIX TCH-003-045 User Manual download pdf

Technical Bulletin

Bulletin No: TCH-003-045 Effective Date: 5/10/02 Cancels: NA Page: 1 of 3

Subject:

SR-2, SR-4 and SR-5 Product Recall Campaign

The Bendix Trailer Spring Brake Control Valve models SR-2, SR-4, SR-5 and Australian valve models ABV3802,

SR-3 and SR-38 manufactured between March 2000 and April 2001 are a part of a voluntary recall campaign. Also

included are SR-4 maintenance kits as identified below. The recall DOES NOT affect the Bendix SR-3 Inversion

Valve.

SR-2 SR-4 (New Style) SR-4 (Old Style) SR-5

Figure 1 - Valve Identification

What You Need To Do

All vehicle manufacturers, dealers and distributors should immediately stop using and/or selling any of the SR-2,

SR-4, or SR-5 (or in Australia, any ABV3802, SR-3, and SR-38) Trailer Spring Brake Valves or affected service

kits, manufactured between March 2000 and April 2001, containing the impacted component. Also, if you have

sold any of these valves please make your customers aware of the recall campaign.

The Problem

The molded rubber face of the Inlet/Exhaust Valve (“I/E” Valve”) of the affected SR brake valve assembly can

separate from the valve’s metal insert and block the exhaust passage of the trailer spring brake circuit. This

condition can result in affected trailers being unable to apply the parking/emergency spring brakes during parking

or in the event of a trailer supply line failure. The service braking of the trailer, as well as the service, parking and

emergency braking of the tractor, are not affected by this defect.

The Cause

The cause of the defect is due to manufacturing processes at a Bendix supplier of the impacted I/E Valves. The

manufacturing processes have been changed to eliminate these factors and prevent recurrence of this fault.

Valve Date Code Interpretation

The date code is interpreted as follows. The first character is numeric representing the shift of manufacture (1 or 2).

(Note: The shift of manufacture is optional and may not be on all valves.) Second is an alpha character (A through

M skipping the letter I) representing January through December for the month of manufacture (i.e., “A” = January;

“B” = February and so on). The next 4 characters are numbers representing the day of the month followed by the

year (two digits for each). The last character is an alpha character representing the location of the manufacturing

plant. For example the date code 2K0300T indicates the product was manufactured on the second shift of October

3, 2000 in Texas. If the valve date code falls between March 1, 2000 (C0100T) and April 30, 2001 (D3001T) the

valve must be repaired with one of the available repair kits shown in this bulletin. Refer to figures 2 and 3.

Date code

PR-3

Piece number

this side – date

code opposite

Piece number this

side – date code

1 2 3

Technical Bulletin 1
1 C 01 00 T 2

Summary of Contents

Page 1 - Technical Bulletin

Page 2 - 1 C 01 00 T

Page 3

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BENDIX TCH-003-045 User Manual

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