What are the possible reasons for the excavator not moving?

1 Answers
LeEli
07/29/25 9:35pm
The possible reasons for the excavator not moving are as follows: Insufficient oil: The hydraulic tank has insufficient oil, causing the main pump to suck air. Clogged filter: The suction filter is completely blocked. Damaged coupling: The engine coupling is damaged (such as the winch, elastic disc, etc.). Main pump failure: Caused by damage to the main pump. Low servo system pressure: The servo system pressure is too low or has no pressure. Low safety valve pressure: The safety valve setting pressure is too low or stuck. Suction pipe burst: The main pump suction pipe is burst or detached. Excavator hydraulic circuit failure: Check the pilot pressure of the excavator's pilot pump for abnormalities. If abnormal, check if the pilot filter is clogged or damaged. If damaged, it will result in low pressure. Additionally, severe internal gear wear in the pilot pump can also cause internal leakage, preventing the establishment of working pressure.
Was this review help?
15
3
Share
More Forum Discussions

Is it necessary to use 95-octane gasoline for new cars?

Whether a new car requires 95-octane gasoline depends on the specific brand and model. Generally, most naturally aspirated engine models can use 92-octane gasoline. It is advisable to follow the fuel requirements specified in the vehicle's manual. More details are as follows: 1. In terms of basic composition, gasoline has two important components: n-heptane and isooctane. The octane rating represents the proportion of isooctane. For example, 92-octane gasoline contains 92% isooctane and 8% n-heptane. 2. Different octane ratings primarily prevent engine "knocking." Generally, vehicles designed for 95-octane gasoline should never use 92-octane, as it can easily cause cylinder knocking. 3. Using 95-octane gasoline in a vehicle designed for 92-octane is less severe and at least won't cause "knocking." There is no scientific basis for the claim that higher-octane gasoline saves more fuel during highway driving. To save fuel, focus more on route planning and driving habits, such as avoiding sudden braking to reduce kinetic energy loss.
9
4
Share

What is the PCV valve in Wuling's recall?

Wuling's PCV valve is part of the engine's crankcase forced ventilation system. Detailed information: Introduction: PCV stands for Positive Crankcase Ventilation control system in Chinese. The PCV valve consists of a valve body, valve, and valve cover, and is typically installed between the valve rocker cover and the intake manifold. PCV valve inspection method: After reinstalling the PCV valve, remove the crankcase intake pipe from the air filter, lightly cover the pipe opening with a thin piece of paper. As the pressure in the crankcase decreases, the paper should be noticeably sucked towards the pipe opening. Additionally, after stopping the engine, remove the PCV valve and shake it by hand to check. If a 'click' sound is heard, it indicates that the PCV valve is flexible and usable.
15
2
Share

How to Maintain a Vehicle That Will Not Be Used for a Long Time?

Maintenance methods for vehicles that will not be used for a long time: 1. Loosen the ground wire of the battery and reconnect it when in use to ensure no power loss. Additionally, change the engine oil and oil filter every 5,000 kilometers. If the vehicle is left unused for half a year, these should also be replaced. Brake fluid and gear oil should be completely replaced every three years. 2. If possible, it is best to store the car in a garage. If parked in an open area, at least cover the car with a car cover. When choosing a car cover, opt for a thick, multi-layered one to effectively reduce the impact of sunlight on the paint. Ensure the car cover fits properly to avoid unnecessary friction on the paint caused by wind. 3. Tighten all connections on the vehicle. Due to vibrations, bumps, and swaying during driving, connections may become loose or worn. Therefore, regular tightening during maintenance is essential. The daily tightening of connections directly relates to driving safety, especially for critical components like steering, braking, and transmission systems—never overlook this.
12
1
Share

What is the fuel consumption of Wuling Rongguang?

Wuling Rongguang has a fuel consumption ranging between 6.6L-7.8L. Below are the specific details about Wuling Rongguang: Body Dimensions: Wuling Rongguang is a microvan under the Wuling brand. The vehicle measures 4135 mm in length, 1625 mm in width, and 1870 mm in height, with a wheelbase of 2700 mm. Powertrain Configuration: Wuling Rongguang is equipped with two engines: a 1.2L naturally aspirated engine and a 1.5L naturally aspirated engine. The 1.2L naturally aspirated engine delivers a maximum power of 56 kW and a maximum torque of 112 Nm. The 1.5L naturally aspirated engine produces a maximum power of 73 kW and a maximum torque of 135 Nm. Both engines feature multi-point fuel injection technology and utilize an aluminum cylinder head with a cast iron cylinder block.
3
2
Share

What are the causes of car brake pulling?

The reasons for brake pulling include the following points: 1. Unilateral brake pad wear or hub inner ring wear; Uneven tire wear causing inconsistent friction on both sides; 2. Frame deformation resulting in uneven force distribution; 3. Broken load-bearing shock absorbers or oil leakage causing center of gravity deviation; 4. Improper brake adjustment leading to uneven braking force distribution. Solutions for right-side brake pulling: 1. Different braking torque on left and right sides of the same axle causes unilateral braking. Common causes include brake caliper oil leakage, piston rust, drum brake pad contamination, or different surface roughness between brake disc/pad or drum/pad. These should be inspected and repaired accordingly. 2. Different tire pressure, tread patterns, or wear levels between two sides can cause unequal actual rolling radii, leading to vehicle drift even without braking. 3. Improper body repair after accidents causing unequal wheelbase, suspension component issues like deformed control arms, bent shock absorbers, failed components, loose suspension ball joints, or deformed connecting rods - all of which can interfere with braking coordination. Additionally, incorrect wheel alignment may also cause this phenomenon.
11
4
Share

How Far Can the Last Bar of Fuel in Wuling Rongguang Run?

Wuling Rongguang can run at least 30~50 kilometers after the last bar of fuel is used up. Here are specific instructions about the car fuel gauge: Reading Method: The range between F and E indicates the amount of gasoline in the car's fuel tank. The closer the pointer is to F, the more fuel remains; conversely, the closer it is to E, the less gasoline is left in the car. When the pointer reaches the E position, the fuel warning light will illuminate, indicating that the gasoline will soon be depleted, and the owner should refuel at a gas station as soon as possible. Cleaning Method: Soak a soft cloth in clean tap water and wring it out, then wipe the car dashboard to remove various stains except stubborn ones. This method is suitable for all material types of dashboards. Wipe from one end of the dashboard to the other to avoid missing any spots—once the rest of the dashboard area is cleaned, missed dust and dirt will become particularly noticeable. For a more thorough cleaning, use a clean, dry cloth to handle a dusty dashboard. For optimal results, it is recommended to use a microfiber cloth.
4
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.