The GR plug is for the auto greaser option. The auto greaser does not have GR marked on the plug. If the GR plug is not plugged in the slew ring will not be automatically lubricated.
Rocky Mountain Crane Service Logs
Rocky Mountain Crane Service Logs
The GR plug is for the auto greaser option. The auto greaser does not have GR marked on the plug. If the GR plug is not plugged in the slew ring will not be automatically lubricated.