Reasons for Low Oil Pressure in LiuGong Excavators

[DeAlexandra]

The reasons for low oil pressure in LiuGong excavators include insufficient oil; the oil pump not rotating; wear and tear in the oil pump, leading to low oil pressure faults in LiuGong excavators, etc. Below is related knowledge about excavators: 1. Introduction: Excavators, also known as digging machinery or earthmovers, are earth-moving machines that use a bucket to dig materials above or below the machine's bearing surface and load them into transport vehicles or unload them to stockyards. 2. Structural Composition: Common excavator structures include power units, working devices, slewing mechanisms, control mechanisms, transmission mechanisms, traveling mechanisms, and auxiliary facilities. The transmission mechanism transfers the engine's power to actuators such as hydraulic motors and hydraulic cylinders through a hydraulic pump, driving the working devices to complete various operations.

[CamilleMarie]

I've been operating excavators for several years and have encountered low oil pressure issues a few times. The first thing to do is check if the oil level is sufficient. If the oil level is low, the pressure naturally won't rise, so you need to top it up immediately or check for any leaks. Then, inspect the filter—if it's clogged, it can restrict oil flow and cause abnormal pressure, especially when doing a lot of dirty work. If these aren't the issue, it might be due to oil pump wear or internal leaks. Last time, my pump was the problem—even at high RPMs, the pressure wouldn't rise, and when I took it to the shop, they found some carbon buildup in the oil pan. Always check the pressure gauge before starting up, and if you notice anything unusual, shut it down immediately to troubleshoot. Otherwise, prolonged operation can lead to engine bearing failure, which is much costlier to repair. Also, use oil with the right viscosity grade when changing it—don't cheap out on overly thin oil, as this can prevent a lot of trouble.

[LaCaleb]

When I first started operating an excavator, I was really panicked when encountering low oil pressure. Later, I realized the issues mostly lie in a few areas. The most common is insufficient oil—when the gauge shows low pressure, stop immediately to check the oil level. If it's low, top it up and see if there's improvement. Another frequent issue is a clogged oil filter, especially in older machines where the filter gets too dirty over time, restricting oil flow and causing low pressure—try replacing it with a new one. If the oil pump is faulty, it's like a blood pump failing; the pressure won't rise, and you'll need professional repairs. Also, an easily overlooked cause is oil that's too thin in viscosity, such as using an inappropriate grade in summer—thin oil won’t build pressure. Address these issues promptly; last time I delayed for two days, the engine developed abnormal noises, costing a fortune to fix. Regular maintenance with these points in mind can make your excavator more durable.

[PiperAnn]

My excavator had low oil pressure, and the reasons can be summarized in a few main points. Low oil level—check the fluid level and top it up in time. Clogged filter—oil flow is restricted, leading to insufficient pressure; cleaning or replacing the filter will fix it. Oil pump failure—internal wear or blockage prevents pressure from building up. Another example is oil leakage—cracks or leaks will cause pressure loss. Also, make sure to use the correct oil viscosity, otherwise the pressure will be unstable. Fix it early—don’t wait until the engine is damaged to regret it.