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Matthew OwensJul 26, 2025
What to do if grease is discharged at the pressure relief valve in Manitowoc MLC300?
- AAustin KennedyJul 26, 2025
If grease is being discharged at the pressure relief valve of your Manitowoc Construction Equipment, it indicates a blockage in the meter valves, hose, tubing, or at the bearing. You can test the system with a grease gun at the system's manual grease fitting. Loosen each outlet line at the primary valve, one at a time. The blocked outlet line will start flowing grease and the indicator pin will start indexing. Retighten all outlets at the primary valve. Trace the hose that flowed to its secondary valve and repeat the process of loosening each outlet one at a time until the blocked line is found. Retighten all outlets. Repair any bearing blockage. If a metering valve is causing the blockage, replace the valve.