Quantcast 6.  FAN SPEED DOES NOT LOWER FROM HIGH SPEED TO LOW SPEED (CONT) - TM-9-2320-364-20-3_1044

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Page Title: 6. FAN SPEED DOES NOT LOWER FROM HIGH SPEED TO LOW SPEED (CONT)
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CONTINUITY TEST - TM-9-2320-364-20-3_1043
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CONTINUITY TEST - TM-9-2320-364-20-3_1045
TM 9-2320-364-20-3 2-2922 6.  FAN SPEED DOES NOT LOWER FROM HIGH SPEED TO LOW SPEED (CONT). Heater blower motor operates,   indicating CB15 OK. Fan operates at low speed with   hydraulic selector switch in   AUTO or CRANE/SRW   position. Fan operates at low speed with   throttle position switch   depressed. Wire 1933 between MC59 and   MC128 OK. Wire 1932 between MC59 and   MC61 OK. Wire 1932 between MC61 and   MC128 OK. Temperature sensor OK. Wire 1538 OK. Wire 1435 from fan   controller OK. Wires 1935 and 1936 between   MC59 and MC76 OK. Temperature switch faulty. KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION Continuity test. STE/ICE-R #91. If temperature switch is stuck open, fan will operate at high speed. YES NO Replace temperature switch (Para 7-80). Verify repair, go to Step 19 of this Fault. 10. Is continuity measured between temperature switch connector MC128, terminals A and B with engine cool? Fault not corrected. Notify DS Maintenance. WARNING Read   WARNING on Page 2-2923

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