Technical Knowledge
What are the common faults and solutions of riding power trowel machines?
Common faults and solutions of ride-on trowels are as follows:
Engine cannot start
Cause of fault
Fuel problem: Insufficient fuel or poor fuel quality may cause the engine to fail to start. For example, using fuel containing impurities or too much water will affect the combustion process.
Spark plug failure:
The spark plug is worn or seriously carbonized, and cannot produce a strong enough spark to ignite the mixture. This is prone to happen to the spark plug after long-term use or working in harsh environments.
Air filter blockage:
Air cannot enter the engine smoothly, causing the mixture ratio to be unbalanced, affecting combustion. In a dusty construction environment, the air filter is easily blocked.
Starter motor failure:
The starter motor is damaged and cannot drive the engine crankshaft to rotate, so it cannot start. Motor brush wear, winding short circuit, etc. may cause failures.
Solution
Check the fuel:
Make sure there is enough fuel and use qualified fuel. If you suspect there is a problem with the fuel, you can replace it with new fuel.
Check and replace spark plugs:
Check the status of spark plugs regularly, clean carbon deposits or replace worn spark plugs. Generally speaking, the service life of spark plugs varies according to the frequency of use and working conditions, and they need to be checked about every 100-200 hours of working time.
Clean or replace air filter:
Clean the air filter regularly according to the dust conditions in the working environment. If the blockage is serious, replace the new filter in time.
Check the starter motor:
If the starter motor is faulty, it needs to be repaired or replaced by a professional.
Abnormal vibration of the trowel machine
Cause of failure
Improper installation of the trowel or spatula:
The trowel or spatula is not installed firmly, which will cause looseness and abnormal vibration during operation. It may be that the mounting screws are not tightened, or the spatula is displaced by impact during use.
Bearing damage:
The bearings of the trowel machine may wear or be damaged after long-term use, causing abnormal vibration of the machine. For example, the bearings may be damaged by lack of lubrication or excessive load.
Engine is unstable:
The engine vibrates when it is working, which will be transmitted to the working parts of the trowel machine, causing abnormal overall vibration. This may be caused by reasons such as engine throttle failure and nozzle blockage.
Solution
Check and reinstall the trowel and spatula:
Carefully check the installation of the trowel and spatula before use, and ensure that the screws are tightened and the spatula is evenly arranged. If the spatula is found to be damaged or deformed, it should be replaced in time.
Replace the bearing:
When the bearing is suspected to be damaged, it is necessary to disassemble the relevant parts to check the bearing status. If the bearing is damaged, it should be replaced with a bearing of the same model as the original, and ensure that it is installed correctly, and add an appropriate amount of grease.
Check the engine stability:
Perform a comprehensive inspection of the engine, including the opening of the throttle, the injection of the nozzle, etc. Professional diagnostic tools can be used to detect the working parameters of the engine, and corresponding repairs and adjustments can be made according to the test results.
Unsatisfactory trowel effect
Cause of failure
Trowel wear:
After long-term use, the blade of the trowel will wear and become less sharp, affecting the trowel effect. For example, when smoothing a concrete surface with a higher hardness, the trowel will wear out faster.
Improper machine travel speed:
If the travel speed of the ride-on trowel is too fast or too slow, the ideal smoothing effect cannot be achieved. If the speed is too fast, the trowel will act on each part for a short time and cannot smooth the surface; if the speed is too slow, it will affect work efficiency.
Excessive unevenness of the concrete surface:
If the unevenness of the concrete surface itself exceeds the processing range of the trowel, such as large protrusions or depressions, it is also difficult to obtain a good smoothing effect.
Solution
Replace the trowel:
Check the wear of the trowel regularly, and replace it with a new one in time when the trowel is worn to a certain extent. Generally speaking, the trowel needs to be replaced if the blade wears more than 2-3 mm.
Adjust the machine travel speed:
According to the state of the concrete and the requirements for smoothing, reasonably adjust the travel speed of the trowel. In the initial smoothing stage, you can slow down the speed appropriately to ensure that the trowel can fully act on the concrete surface; in the fine smoothing stage, you can speed up appropriately.
Pre-treat the concrete surface:
Before using the trowel, preliminarily treat the concrete surface, such as using a scraper or other tools to roughly flatten the surface so that the unevenness is within the effective working range of the trowel.
Machine driving problems
Cause of failure
Tire damage:
Punctured, severely worn or insufficient tire pressure will affect the driving stability and normal driving of the trowel. At the construction site, sharp objects can easily puncture tires.
Steering system failure:
Damage or wear of steering system components such as steering shafts and knuckles will cause the trowel to turn inflexibly or lose control. For example, a loose connection at the steering shaft will cause inaccurate steering operations.
Transmission system failure:
Broken or loose transmission chains or belts, or problems with the gearbox will affect the power transmission of the trowel and cause abnormal driving.
Solution
Check and repair tires:
Regularly check the tire pressure and wear, and repair or replace tires in time if they are damaged. Keep the tire pressure within the specified range. Generally, the tire pressure of a riding trowel is about 2-3 atmospheres.
Check and repair the steering system:
Check the steering system, tighten loose parts, and replace worn parts. For example, if the steering knuckle is severely worn, it should be replaced with a new one, and the steering clearance should be adjusted.
Check the transmission system:
Check the tightness of the transmission chain or belt, and adjust or replace it if necessary. For problems with the gearbox, such as difficulty in shifting gears, abnormal noises, etc., professional maintenance personnel are required to inspect and repair.
Thanks to All the Friends Who Support and Trust Shandong Vanse Machinery Technology Co., Ltd.
If you want to know more about Shandong Vanse Machinery Technology Co., Ltd. or have any questions, please feel free to contact us:
Our Factory
Shandong Vanse Machinery Technology Co., Ltd.
Share this article
About the Author: Shandong Vanse Machinery Technology Co., Ltd.
Shandong Vanse Machinery Technology Co., Ltd. is a high-tech manufacturer specializing in concrete construction machinery, including laser screeds and related equipment. The company integrates R&D, production, and global sales, with products exported to over 60 countries and widely used in infrastructure projects worldwide.
Previous Post
Next Post
Related Articles
You Might Also Like
Application of Spreaders in Anti-corrosion Concrete Flooring (e.g., Acid-resistant, Oil-resistant)
In the construction of anti-corrosion concrete floors (e.g., those resistant to acids, oils, and chemical corrosion), **spreaders** play a crucial role in transforming the process from "manual, extensive work" to "standardized, precise construction." Unlike ordinary wear-resistant floors, anti-corrosion floors have stringent requirements for the uniformity and density of material distribution. The following is an analysis of the specific applications of spreaders in this field: When constructing anti-corrosion concrete floors (typically involving hardeners, aggregates, or special resin mortars), spreaders primarily address the following three major challenges: Precise Quantity Control: Anti-corrosion materials (such as quartz sand, corundum, or alloy aggregates) are generally more expensive than ordinary materials. Spreaders can precisely control the amount spread per square meter within an error range (e.g., 5 kg/m²), avoiding localized areas that are too thin (easily corroded) or too thick (easily cracked) due to manual spreading. Physical Density: Spreaders are typically used in conjunction with laser leveling machines to uniformly spread the material over a large area during the initial setting phase of the concrete. This uniformity ensures a tight bond between the anti-corrosion surface layer and the base concrete, reducing porosity and thus improving the floor's impermeability-a key factor in anti-corrosion. Synchronized Progress: The construction window for anti-corrosion flooring is extremely short. The high efficiency of spreaders ensures that, during large-area construction, the material is pressed into the surface in the optimal hydration state of the concrete. This type of flooring requires extremely high sealing properties. Application: Use a spreader to evenly distribute non-metallic hardened aggregate. Effect: The resulting dense layer effectively prevents engine oil and cutting fluid from seeping into the concrete through capillaries, avoiding a loose or crumbling base layer. Although concrete itself is not resistant to strong acids, modern processes often involve applying a vinyl ester mortar or epoxy anti-corrosion mortar to the surface. Application: When laying anti-corrosion aggregate layers over large areas, the spreader ensures a consistent distribution density of the corrosion-resistant filler. Effect: Eliminates "weak points and gaps" left by manual operation, preventing acidic media from "drilling" through sparsely distributed areas and corroding the reinforcing steel. Links Manual material application Automatic spreading machine application Uniformity Relies on experience, easily resulting in uneven application and weak areas. Uniform height, fully automated control. Denseness Secondary leveling is difficult. Instant bonding with the substrate after application, minimizing air bubbles. Corrosion resistance life Due to localized weaknesses, premature pitting corrosion is likely. Uniform coating thickness, extending overall lifespan by over 30%. Material loss Loss rate is approximately 10%-15%. Loss rate controlled below 3%. Timing: In anti-corrosion flooring construction, spreading the aggregate too early will cause it to settle to the bottom, negating its anti-corrosion protective effect; spreading it too late will prevent it from forming a cohesive whole with the concrete, leading to peeling later. Overlapping Area Treatment: The spreader's path should have slight overlap to ensure that the anti-corrosion performance at the joints is not compromised. Multiple Process Coordination: After spreading, a power trowel must be used for multiple finishing processes to further improve the surface layer's wear resistance and impermeability through mechanical pressure. When pursuing high-performance corrosion protection, the material spreader is not only a tool for improving efficiency but also a physical line of defense for quality control. Through its uniform physical structure, it provides the most stable carrier for chemical corrosion-resistant materials. Are you planning a specific factory flooring project? If you have specific corrosion protection requirements (such as resistance to 5% sulfuric acid or deep grease penetration), I can provide you with more targeted material proportioning suggestions or construction plan guidance. Note: The parameters provided in this document are for reference only and are not mandatory. Due to differences in technical characteristics between different brands and models of laser levelers, please consult the manufacturer for a suitable solution before actual operation. This reference document assumes no responsibility for any issues arising from failure to follow the manufacturer's instructions.In order to reduce the probability of accidents, the laser leveling machine should be operated in this way
If the laser leveler is used improperly, it is easy to cause danger, especially if it rolls over, it is likely to cause casualties. Therefore, when using the leveler, you should always maintain the correct operation method, because only in this way can the safety of the laser leveler be guaranteed to the greatest extent, and the construction quality of the leveler can be well exerted. Please see the following for the correct operation method. ◀ Before the laser leveler moves, check the road conditions, remove obstacles on the road, keep irrelevant personnel away from the leveler, and then retract the telescopic arm to start. ◀ Check the direction of travel, determine the position of the drive wheel, and then honk the horn, and the laser leveler will start to move slowly. ◀ When reversing the laser leveler, estimate the space behind the car in advance. If the blind spot is too large, ask a special person to direct and coordinate behind. ◀ The driver controls the walking speed according to the road conditions. When walking on an open flat ground, you can select "1" gear, and the walking speed of the laser leveler will automatically increase or decrease according to the working pressure of the hydraulic walking circuit; when going up and downhill, you can select "0" gear, and the laser leveler will walk at a low speed and high torque. ◀ Try to choose a flat road when the laser leveler is walking. ◀ Avoid walking the leveler in water as much as possible. If you must wade, remember to explore the water depth and the soft and hard platform of the bottom of the water in advance. It is not suitable to walk if the underwater silt is too deep or the water surface exceeds the wheels The above is the correct operation method of the laser leveler. I hope you can get some substantial reference value from this article. If you have other questions, please feel free to consult us at any time, and we will answer them one by one.Can a concrete laser leveling machine handle slopes? Which settings work best?
The short answer is yes, concrete laser leveling are actually excellent at handling slopes, provided they are equipped with the right 3D profiling systems. While a standard laser receiver is great for a perfectly flat floor, gravity and geometry require a bit more tech for inclines. Standard laser leveling uses a rotating laser transmitter on a tripod and receivers on the machine. This creates a flat "plane" of light. Single/Dual Slopes (2D): If you are doing a simple parking lot ramp or a consistent drainage slope, you can physically tilt the laser transmitter on its tripod to a specific percentage (e.g., a 1% grade). The machine will then follow that tilted plane.Complex Contours (3D): For complex curbs, valleys, or multi-directional slopes, the machine uses 3D Profiling Systems (often involving a Total Station or GPS). This allows the leveling to automatically adjust the head height based on its exact coordinate position on a digital map. To get the best finish on a slope, you can't just "set it and forget it." You need to account for the way wet concrete behaves under gravity. On a slope, concrete tends to "slump" or migrate downward. Setting: Keep the auger speed high enough to move excess material but not so fast that it creates a "wave" of concrete that pulls away from the high side. The vibrator is what settles the aggregate and brings the "cream" to the top. Setting: On steep slopes, lower the vibration frequency slightly. Over-vibrating on an incline can cause the concrete to fluidize too much, leading it to slide down the hill before it sets (slumping). Best Practice: Generally, you want to pull the machine up the slope or work across the fall. Pulling downhill can lead to "shingling," where the leveling head pushes too much material in front of it, resulting in an uneven thickness. If your machine has slope compensation software, ensure it is toggled on. This adjusts the hydraulic response time to ensure the leveling head reacts instantly to changes in elevation without "hunting" or bouncing, which happens more often on uneven grades. Factor Standard Flat Setting Slope Setting Laser Mode Horizontal / Level Grade / Manual Slope Vibration High / Normal Reduced (to prevent slump) Travel Speed Faster Slower & More Consistent Concrete Slump 4" – 5" 3" – 4" (Lower is better for slopes) Note: The parameters provided in this document are for reference only and are not mandatory. Due to differences in technical characteristics between different brands and models of laser levelers, please consult the manufacturer for a suitable solution before actual operation. This reference document assumes no responsibility for any issues arising from failure to follow the manufacturer's instructions.
