k_kindig11
Member
Brother in law and I went in together last year to dig out our ponds. The dragline ran fine last year for most of the year, then he started having trouble with the machine wanting to swing on it's own as he was digging, which makes things pretty difficult. If I remember correctly it wants to swing left. Upon inspection of the swing clutches, the front clutch seems to work properly - engaging and disengaging. The rear clutch doesn't seem to disengage all the way. Two or three of the "jaws" release and that portion of the clutch plate pushes out, but we seem to have one "jaw" that once engaged, doesn't want to disengage. If we tap on that jaw with a hammer, we can get it to release and the plate pull out, but it feels real tight. Once we engage that clutch, it stays stuck again. We tried to work it free this way for awhile, hoping it would begin releasing on it's own, but no luck. I have attached a short video of the clutches working as we operate the swing clutches. Any ideas if I'm diagnosing the problem correctly or where the problem might lie, and if so how to fix it? We are hesitant to tear it apart at this point for two reason. The first being that we aren't for sure what is causing this problem, and two the proper procedure for taking the clutch apart. Any input from you experience dragline guys with knowledge of maintenance on these old machines would be greatly appreciated! Or anyone that has repair instructions for repairing the clutch. I have been unsuccessful this far finding any info on this repair.
Unit Dragline Crane
Model is 1220 if I remember correctly.
Year is somewhere in the late 50s.