BENDIX TCH-003-019 User's Manual
Contents
1. Technical Bulletin Bulletin No PRO 03 19 Effective Date 7 30 79 Page 1 of 1 Subject SR 4 Spring Brake Valve PR 3 Press Prot Valve s PC No 286460 g7 SR 4 Valve Sub Assy PC No Located Here Service Replacement Information Tag Fastened Here SC 1 Single i Fig 1 SR 4 Spring Brake Valve leas 720603 en The SR 4 Spring Brake Valve is used on trailers and is similar in appearance to the SR 2 Spring Brake Valve The SR 4 differs in function by utilizing both trailer reservoirs for normal service braking but reserving sufficient air pressure to provide a spring brake release in the event of service system failure Reference Figure 1 the complete SR 4 Assembly pc no 101112 consists of an SR 4 Valve sub assembly pc no 101113 a PR 3 Pressure Protection Valve pc no 286460 and a SC 1 Single Check Valve pc no 229603 Because of the similar appearance of the SR 2 I E pc no 287386 and the SR 4 positive identification of the valve is important to insure correct replacement The SR 2 and SR 4 valves have different operational characteristics and therefore IN NO CASE SHOULD THEY BE INTERCHANGED WITH EACH OTHER The SR 4 Valve sub assembly piece number is stamped into the valve body position indicated in Figure 1 In addition future production of the SR 4 assemblies will include a tag which will note service replacement piece number information Bendi wast
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