Oil Press Leakage Troubleshooting and Troubleshooting Guide

Aging or Damaged Seals
Seals in press chamber are exposed to high temperature, pressure and grease corrosion for long periods of time. High temperatures can cause the seal material to age, lose elasticity and seal performance. High pressure produces great pressure on the seal, which causes the seal to deform. Grease corrosion will gradually damage the seal's surface structure. For example, if the seal between the press chamber and the cake outlet joint is broken, grease can leak from the joint, affecting normal pressing operations and oil extraction.
Improper assembly of pressurized chamber components
In the process of component installation, uneven tightening force can lead to excessive clearance between some components. This improper assembly can break the seal and allow grease to escape through these gaps. For example, if the bolts in the press chamber are not tightened, a gap may appear between adjacent components, causing grease to leak from the gap.
Abnormal Pressure in the press Chamber
When the pressure inside the pressure vessel is too high or fluctuates violently, too much pressure is applied to the seal, causing the seal to fail. Uneven material feed will lead to uneven pressure distribution in the pressure vessel, some places too much pressure. The blockage can also lead to a build-up of local pressure, preventing proper release. These can all lead to oil leakage.

Shaft Seal Wear
Shaft seals in transmission areas is gradually worn down by high-speed rotation and friction. As wear increases, the gap between the shaft and sleeve widens, allowing grease to seep through the enlarged gap. For example, after prolonged use, the seal surface can show obvious signs of wear and tear, resulting in poor sealing performance and oil leakage.
Oil Seal Installation Issues
Improper installation or non-tightening of oil seal can seriously affect the effectiveness of oil seal. If the oil seal is installed in the wrong direction, grease leakage will not be prevented. Failure to tighten the seal creates a gap between the seal and the shaft through which grease is allowed to leak. For example, incorrect installation of oil seal or use of the wrong tools can lead to oil leakage.
Bearing damage
Bearings may be damaged by wear and tear during use. When the bearing is damaged, the grease in the bearing will leak. Bearing wear increases the gap between the shaft and bearing, allowing grease to leak out of the gap. Bearings that break can lead directly to grease leaking from cracks.

Fuel tank welding crack
During welding process, due to the vibration of equipment, temperature fluctuations, etc., defects may appear in welding process, or cracks may occur in long-term use. These cracks can cause oil to leak from the tank. For example, incomplete fusing during welding or improper post-welding heat treatment can lead to seam cracking.
Poor Sealing of fuel tank drain
Aging gaskets or loose screws can lead to poor sealing, resulting in oil leakage. Aging gaskets lose their elasticity and sealing properties, which reduces the effect of preventing grease leakage. Loosening screws will loosen the connection between the drain and the tank, allowing grease to escape through the gap.
Too much gas in the tank
When the fuel level in the tank is too high, oil can easily spill from the edge of the tank due to vibration or temperature fluctuations in the equipment. For example, vibrations during the operation of the device can cause the oil in the tank to shake. If the oil level is too high, the oil may spill.

Find the Leak
Operators should first intuitively determine the approximate location of the leak. Observe the surface of the equipment for oil stains. Depending on where the stain is, determine if it is leaking into the presser, drive shaft or oil tank. For example, if an oil stains is found on the bottom of a device near the press chamber, it may leak in the press chamber.
Watch for the Leak Status
Observe the color, velocity and frequency of the oil spill. Leaks caused by different causes may exhibit different characteristics. For example, if the leak is caused by an aging seal, the oil may be cloudy and have a slow, continuous flow rate. On the other hand, if the leak is caused by a ruptured oil tank, the spilled oil may have a high velocity and behave as a jet. These characteristics can provide important clues for subsequent cause analysis.

Press Chamber Inspection
Remove relevant components of the press chamber and carefully examine the seal for signs of aging, deformation or cracking. Use specialized tools to measure gaps between components and verify that they are in normal range. Also, check the elasticity of the seal. Press the seals gently to observe how they return to their original shape. If the seal is not elastic enough, it may age.
Transmission Inspections
Check shaft seals, oil seals and bearings for wear and tear. Observe the surface for scratches and abrasions. At the same time, check the transmission parts for abnormal noise or vibration. Touch the transmission parts and feel its temperature and vibration. Damaged bearings can produce unusual noise and run high.
Check fuel tank
Check the weld of the fuel tank for cracks. Penetrant testing available. Apply the osmotic agent to the weld and, after a certain period of time, use a contrast agent. If there is a crack, the osmosis will show. Check the oil drain seal for signs of aging or loose screws. At the same time, measure the level of oil in the tank to see if it is too high.

Full Judgment
Based on the previous observation and detailed inspection results, a comprehensive analysis of the root cause of the oil leak is made. For example, if the press chamber seal is found to be damaged and the pressure inside the press chamber is abnormal, the damaged seal may lead to an oil leak under high pressure. The cause of the oil leak can be determined more accurately by corroborating the results of multiple inspections.
Application of elimination methods
The elimination method is used to gradually eliminate possible causes and determine the ultimate fault point. If, for example, a oil tank, an inspection finds no cracks in the soldering of the tank, oil drain port is well sealed and the oil level is normal, the possibility of a leak in the tank can be ruled out and further inspection of other areas can be carried out.

Replacement of seals
Choosing the appropriate seal material and specifications is crucial. According to the working pressure, temperature and media of the chamber, select sealing parts that are high temperature resistant, high pressure resistant and grease resistant. When installing the seal, clean the surface to make sure there are no impurities or oil stains, then apply the right amount of grease to ensure smooth installation and a good sealing effect. reassemble components.
Reinstall presser assembly according to correct assembly process. Appropriate tools should be used during assembly to ensure even tightening force. Tightening forces can be controlled by measuring torque. Also, make sure there are appropriate gaps between components. Use tools such as feeler gauges to measure and adjust. After assembly, carry out quality inspection to ensure proper sealing.
Adjust pressure.
The internal pressure of the press chamber is stabilized by adjusting the feed speed and removing blockages. If the feed is uneven, adjust feed mechanism to ensure that the material enters the press chamber evenly. If blockage is detected, it should be cleared in time to ensure smooth flow. Stable pressure can reduce impact on the seal and solve oil leaks.

(II) Solutions for transmission parts.
Replacing Shaft Seals and Oil Seals
Select shaft seals and oil seals to match the equipment type and ensure that the size and performance meet the requirements. During replacement process, pay attention to key operating steps such as cleaning the shaft and casing surfaces and applying the right amount of grease. After replacement, should carry on the test run, observes the oil leaks, ensures the replacement shaft seals and oil seals normal work. Install oil seal correctly
Understand the correct installation direction, tightening method and tool usage of oil seals in detail. Oil seals generally have clear installation directions and are installed according to the instructions. Tighten the oil seal with appropriate tools to ensure it stays firmly on the shaft. During installation, care should be taken to avoid scratching the surface of the oil seal surface. If problems occur during installation, they should be resolved in a timely manner, such as adjusting the tightening force or reinstalling.
Replacement of Bearings
According to the speed, load and other parameters of the equipment, a suitable bearing model is selected. When installing bearings, the correct mounting method should be used to avoid the use of brute force. After installation, bearings shall be lubricated with an appropriate lubricant and a specified quantity shall be added. After replacing the bearings, carry out debugging and operation monitoring, and observe the temperature, noise and vibration of the bearings to ensure normal operation.

Welding repairs
When repairing welding crack in oil tank, suitable welding processes and materials should be selected. Before welding, clean up cracks, remove oil and impurities. In welding process, the welding parameters such as current, voltage and speed should be strictly controlled to ensure weld quality. After welding is completed, quality inspections inspection such as external inspection and non-destructive testing shall be carried out to ensure that the welds are free from defects.
Replace oil drain seal
According to the size and pressure of the exhaust, select the suitable oil drain gasket. When installing the gasket, make sure they are in the correct position and have a smooth surface. Tighten screws with appropriate tools, but avoid overtightening to avoid damaging the gasket. After replacement, a seal check is conducted. This can be observed by pressurizing the oil tank.
Controlling oil levels
The operator shall reasonably control the fuel level of the fuel tank according to the requirements of the equipment. oil level gauge can be installed to monitor oil level in real time. If the oil level is too high, the excess oil should be discharged in a timely manner; if the oil level is too low, the oil should be refueled in a timely manner. Check oil level gauge regularly to ensure that it accurately reflects the level of fuel in the tank.

Develop a maintenance plan
Develop a regular maintenance plan based on the frequency and operation of the equipment. Shorten the maintenance intervals for equipment with high usage and poor operating conditions. Items that should be included in the maintenance plan include regular inspection of seals, lubrication of transmission components and cleaning of oil tank. For example, the schedule might include weekly inspection of seals, monthly lubrication of transmission components and quarterly cleaning of oil tank.
Perform maintenance work
Repairs shall be carried out in accordance with the prescribed procedures. Check the appearance and elasticity of the seal carefully when checking the seal regularly. When lubricating transmission components, the appropriate lubricating oil should be selected and added in the prescribed quantity. When cleaning oil tank, thoroughly remove oil stains and impurities. In the meantime, pay attention to safety precautions during maintenance, such as cutting off power supply, wearing protective gear, etc.

Operator training
It is very important to train operators to operate hydraulic presses correctly. Training should include operational procedures, preventive measures and emergency response methods. Operators should be familiar with the start-up, operation and shutdown processes of the equipment, understand the dos and don'ts in operation process, such as avoiding overload, and handle abnormal situations in a timely manner. Operators should also be equipped with emergency management methods so that, in the event of an emergency, such as an oil leak, corrective measures can be implemented quickly and effectively. Standardize Operating Procedures
Emphasis is placed on the operating procedures that must be followed for the start-up, operation and shutdown of equipment. Standardized operations can reduce equipment failures and oil leaks. For example, before the device starts, a comprehensive inspection is conducted to ensure that the device is in good condition. During operation, the operating pressure, temperature and other parameters are closely monitored. During downtime, follow the prescribed sequence to prevent equipment damage.

Control Accessory Quality of accessories
Choose accessories such as seals, shaft seals, bearings, etc., which are reliable and meet equipment requirements. Quality can be assessed by checking the material, manufacturer and quality certifications of the attachment. Choosing high-quality accessories can extend the service life of equipment and reduce oil leaks. High-quality seals, for example, are better able to withstand high temperatures, high pressure and grease, effectively preventing oil leaks.
Grease selection and management
Select the appropriate lubricant according to the requirements of the equipment and store and use it properly. Different equipment has different requirements for lubricating oil, choose the viscosity, anti-oxidation, corrosion resistance suitable lubricating lubricant. During storage, lube lubricant should be stored in a dry, well-ventilated place to avoid direct sunlight and high temperatures. Lubricants should be regularly replaced within a specified interval of time to ensure normal operation.

It is very important to solve oil compressor leakage issues in time to ensure smooth production, reduce production cost and improve equipment reliability. Effective troubleshooting and solutions can reduce equipment downtime, improve production efficiency, avoid oil waste, reduce production costs, extend equipment service life and improve equipment reliability.

Operators are encouraged to maintain and operate equipment in strict compliance with preventive measures. Regular maintenance, correct operation, use of high-quality accessories and lubricants, can reduce oil leakage and prolong the life of the oil press. Operators should also constantly learn and master new technologies and methods, improve their ability to diagnose and resolve equipment failures, and contribute to the steady development of oil processing enterprises.