BENDIX 03-A-09B User's Manual
Contents
1. PRESS CUSTOMER IDENTIFICATION NONE NONE NONE FORD D8HS 2B431 AA FORD E2HT 2B431 AA NONE 244718 244718 244718 244718 294278 294278 235430 235430 235430 235430 294279 294279 gt PC NO QUAN 283091 1 QUAN DESCRIPTION Piston O Ring 247250 A 247249 247248 A 240345 1 Spring Seat 1 1 1 1 1 247246 1 1 1 1 1 1 0 Ring Balance Piston Body 0 Ring Retaining Ring Control Piston Cover Diaphragm Exhaust Exhaust Cover Piston O Ring 0 Ring oOown7m on PWM eR N w S gt rrgegerrrr gt s D wo 247247 A 247255 247209 230576 242228 240858 A A A FURNISHED IN MAINTENANCE KIT PC NO 283861 j p jd pd pd pd pd pd pd jnd Cover 0 Ring Inlet amp Exh Valve Assy Check Valve Spring Check Valve Shuttle Guide Shuttle Valve Cap Nut 0 Ring Retaining Ring Supply Adapter 546 24 Cap Screw 1 Pipe Plug 10 Threadroll Screw2. CATALOG 03 A 09B MODULATING VALVE The R 7 Modulating Valve is commonly found on trucks and buses with dual air brake systems The function of the R 7 is to modulate the spring brakes through application of the foot brake valve in the event of loss of rear axle service brake pressure This action takes advantage of the driver s natural reaction to apply the foot 19 brake valve in an emergency brake situation and eliminates the need to actuate dash mounted controls Spring brake pressure is limited to 90 95 PSI by the R 7 Normal parking functions are also controlled through the R 7 15 For installation and maintenance see Instruc tion and Service Data Sheet SD 03 86 WEIGHT 2 5 LBS VMRS NO 13 010 009 MAINTENANCE KIT FOR R 7 IS PC NO 283861 SUPPLY PORT 4 4 PLT 21 20 SECTION VIEW OF SUPPLY PORT amp DOUBLE CHECK VALVE 10 11 12 BALANCE PORT y P T CAPSCREW LOCKWASHER DEVICE CODE IS 4504 16 5 84 294277 Ol FOR PC NO LOCKWASHER SHIMS 294280 102144 amp 103081 OR 294281 CAPSCREW FOR SERVICE OR R 7 MODULATING REMFR EXCH USE VALVE PC NO PC NO 283036 283932 283932 283932 286195 286195 B101234 103081 102144 103081 103081 103081 B OBSOLETE SUPERSEDED BY 102144 C SEE PARTIAL VIEW FOR DETAILS OMIT ITEMS 1 2 amp 24 COMMON SERVICE PARTS DESCRIPTION PC NO Cover Complete SUB ASSY AND DETAIL REFERENCE SPRING BRAKE REL
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