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Page Title: EGR VALVE APPLICATION CHART For 1980 U.S.A. Model Engines
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ENGINE DIVISION SERVICE MANUAL TM 5-4210-230-14&P-1 Fig.  56  Exhaust Gas Recirculation System (Dual Diaphragm EGR Valve) A   low   temperature   vacuum   control   valve   is   used   in   the exhaust gas recirculation system.  The purpose of this valve is to prevent exhaust gas recirculation when the engine is cold. The   low   temperature   control   valve   senses   engine   coolant temperature   and   is   located   in   the   coolant   passage   of   the intake  manifold.    Whenever  engine  coolant  temperature  is below  46  deg.    C  (115  deg.    F),  the  low  temperature  control valve    is    closed,    blocking    vacuum    from    the    EGR    valve diaphragm,   thus   preventing   EGR   valve   operation.      When engine warm ups and coolant temperature exceeds 46 deg.  C (115   deg.      F),   the   low   temperature   control   valve   opens, permitting  vacuum  to  actuate  the  EGR  valve  and  establish exhaust gas recirculation in response to throttle plate position. The   low   temperature   control   valve   can   be   identified   by   a purple exterior color. EGR VALVE APPLICATION CHART For 1980 U.S.A.  Model Engines (Except California) Engine Carburetor IH No. Mfr.  No. Color Code V-345 2210C 480825C1 17057905 Red/White V-345 2300EG 472207C1 17051786 Black/White V-392 4150EG 480824C1 7044409 Green/Black MV-404 2210C 446981C1 17056690 Green/Yellow MV-404 2300EG 446981C1 17056690 Green/Yellow MV-404 4150EG 440312C1 17053177 White MV-446 4150EG 440312C1 17053177 White V-537 2300EG 440310C1 17053031 Blue/White CANADA V-304 2210C 440308C1 7040435 None V-345 2210C 440308C1 7040435 None V-345 2300EG 440306C1 7030983 Black CGES-215  Page 31 PRINTED IN UNITED STATES OF AMERICA

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