Lubricant pump pressure insufficient issues typically fall into two main categories: one is a problem with the lubricant pump's pipeline, and the other is an issue with the pump itself. Insufficient pressure in the lubricant pump can somewhat impede equipment progress and even affect work quality. It is crucial to promptly identify and resolve these issues.

To differentiate between a pipeline issue and a lubrication pump problem, here's a simple method: remove the main oil line. When the lubrication pump is operating, use a plug to completely seal the pump's outlet. Then, perform the oil discharge. If the pressure gauge reads zero when completely sealed, it indicates a problem with the oil pump, and troubleshooting is required. If the pressure rises and the gauge shows a normal reading (typically, the normal operating pressure for a light oil pump is between 1.5-2MPA), then the issue lies with the pipeline, and troubleshooting for the pipeline is necessary.

1. Pipeline issue resolved

Firstly, check the lubrication pump's oil tank to ensure there's oil and that the level is above the marked minimum. If the oil is low, replenish it, but do not add below the marked lowest level. Use the correct type of oil.

2. Main oil pipe leakage detected; inspection of the main oil pipe is required to eliminate leakage. Immediate replacement is necessary upon discovery of any cracks.

3. A branch oil pipe leak occurred during the oil pump pressure increase, with severe oil leakage from the branch oil pipe. It is necessary to inspect the branch oil pipe and replace it.

4. The fuel intake is clogged. Check the bottom of the fuel tank for any fibrous floaters or sediments. If present, it's likely that the fuel intake is blocked. You will need to disassemble the fuel tank, remove and clean the filter mesh from the suction intake, clean the fuel tank as well, and then reassemble it to see if the issue is resolved.

5. After the oil line inspection, check the distributor if one is installed. If the distributor is clogged, it may cause similar issues. Repair or replace the distributor as needed.

6. Check the external filter on the oil pump export; see if the filter is clogged. Secure all drive components and replace defective standard parts.

2. Elimination of the oil pump issue

1. The pressure gauge is damaged, but the oil pump is operating normally and producing oil without pressure. It's likely that the pressure gauge is faulty, as the pressure reading from the oil pump shows zero. A separate replacement of the oil pump's pressure gauge is required.

2. The relief valve (overflow valve) of the oil pump emits oil during operation, which may expose the white hexagonal nut at the gear pump position. If oil leakage occurs, the relief valve needs to be removed for cleaning or replaced.

3. If there's a blockage in the oil intake, check the bottom of the oil tank for any fibrous floaters or sediments. If present, it's likely that the intake is clogged. You'll need to disassemble the tank, remove and clean the filter from the suction port, and also clean the oil tank. Afterward, reassemble and test it.

4. Inadequate suction from the gear pump has led to insufficient pressure in the lubrication pump; a replacement gear pump can be considered.