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Technical Bulletin

Bulletin No.: PRO-03-15 Effective Date: 9/15/78 Page: 1 of 4

Subject: E-9 and E-10 Brake Valves

Ref: Figures 1, 2, 3

As a matter of record, bus operators have preferred the graduating characteristics of the

E-1 brake valve over the E-3 brake valve. History now repeats itself in the dual system,

which utilizes the E-6 brake valve. Consequently, we have released two modified

versions of the E-6. One is the E-9, which will be an interim design that will be used in a

field modification program on MCI coaches for Greyhound and others. The other is the

E-10, which will be the finalized design. Both the E-9 and E-10 are similar to the E-1

valve in that the valves will utilize an E-1 type steel coil graduating spring, in contrast to

the rubber “doughnut” spring used in the E-6. The E-9 is similar to the E-1 valve in

graduating characteristics up to approximately 40 psi; whereas, the E-10 will be almost

identical to the E-1 throughout its complete range.

Fig. 1 shows a typical treadle type valve. The piece numbers which are added to the

E-6 are shown.

Fig. 2 shows a basic valve; piece number 101100 for the E-10. This is the piece

number, which should be used for service replacement.

Fig. 3 is a chart showing the parts deleted from a basic E-6 valve and those added to

make an E-10.

1 2 3 4

Technical Bulletin 1

Summary of Contents

Page 1 - Technical Bulletin

Technical BulletinBulletin No.: PRO-03-15 Effective Date: 9/15/78 Page: 1 of 4Subject: E-9 and E-10 Brake ValvesRef: Figures 1, 2, 3As a matter of rec

BENDIX TCH-003-015 User Manual

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