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HMMWV with Hydraulic winch - chirping sound @ 170 degrees

M

Majorrdad

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Hartsville/South Carolina
Have a Slantback with Mile Marker hydraulic winch. For the last month after vehicle has warmed up to approx 170 degrees and before the fan clutch engages; you can hear a distinctive chirping sound coming form either (I think) the mile marker solenoid or the fan clutch solenoid. Don't know if the flow disc is installed at port four on the mile marker control solenoid or not. Have bled the system several times, no change still chirping away above 170 degrees. Both solenoids are new, however, the mile marker control solenoid is upside down. The hoses are hooked up to the correct ports. Fan clutch operates properly. Does anyone have any idea as to what could be causing this?


Thanks,

Julian King
 
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