The autumn rain had just stopped at a municipal road reconstruction project site, and the construction team was rushing to make up for the progress delayed by the rain. The Komatsu PC200 - 11 excavator, which was responsible for breaking the old road surface and excavating the roadbed, suddenly stopped working normally. Jake, the operator who had operated this excavator for six years, was about to break a section of the old cement road when he found that after pulling the control lever, the hydraulic motor of the excavator didn't rotate at all. He tapped the control panel lightly and restarted the excavator, but the motor only made a weak "whirring" sound and barely rotated. Even when he pushed the throttle to the maximum, the motor's speed was less than half of the normal level, and the breaker on the bucket couldn't hit the road surface with enough force, making it impossible to carry out the road breaking work.
Jake immediately reported the fault to the project manager, Lily. Lily's face turned serious when she heard the news. The municipal road reconstruction project had a strict completion deadline, and the Komatsu PC200 - 11 was the core equipment for road breaking and roadbed excavation. If the fault couldn't be fixed quickly, the entire project would be further delayed, and the team might even face fines from the municipal department. She immediately called the on - site maintenance team to conduct an emergency inspection.
The maintenance team first checked the hydraulic oil. They found that the oil level was normal and there was no water or impurities in the oil, so they ruled out the problem of oil quality. Then they measured the hydraulic oil pressure and found that the pressure was far below the standard value. They suspected that the oil pump was faulty, so they disassembled the oil pump. After inspection, the oil pump's gears and bearings were in good condition, with no obvious wear. They then adjusted the overflow valve repeatedly, but the pressure still couldn't reach the required level.
Subsequently, the maintenance team disassembled the hydraulic motor. They were shocked to find that the internal valve plate and rotor were severely worn, with deep scratches on the contact surface, leading to a large amount of hydraulic oil leakage. In addition, some small concrete fragments had entered the motor's oil passage, causing a blockage, and the motor's output shaft also had a slight jamming problem. The team tried to clean the oil passage, grind the worn valve plate, and replace the sealing elements, but after reassembly, the motor still couldn't work normally. The project site was filled with anxiety as the fault remained unsolved.
Solution:
Lily knew that the on - site maintenance team couldn't solve the problem alone, so she decided to find a professional hydraulic equipment company for help. She asked her assistant to search for companies that specialized in excavator hydraulic motor repairs and replacements online. After comparing multiple companies' technical cases, delivery times, and customer ratings, KICAN Company stood out because of its rich experience in customized hydraulic motors for Komatsu excavators and positive customer reviews.
Lily sent an online inquiry to KICAN Company immediately. She detailed the fault phenomena of the Komatsu PC200 - 11 excavator's hydraulic motor, including the non - rotation and low - speed issues, the maintenance team's inspection process and results, as well as the excavator's working hours and the intensity of road reconstruction work. She also attached photos of the worn motor parts to help KICAN's technical team understand the situation better.
KICAN's technical team responded in just 20 minutes. They organized an online meeting with Lily and the maintenance team, during which they analyzed the fault reasons in detail. They pointed out that the severe wear of the valve plate and rotor had damaged the motor's internal structure, and simple repairs couldn't restore its performance. The only reliable solution was to replace the hydraulic motor with a customized one.
Considering the Komatsu PC200 - 11's working environment (frequent contact with concrete fragments and long - hours of road breaking work), KICAN's technical team designed a customized hydraulic motor. The key parts such as the valve plate and rotor are made of high - strength wear - resistant steel, which can withstand the impact of hard debris and reduce wear. The motor's installation size and interface are completely consistent with the original one, so it can be directly installed without modifying the excavator's hydraulic system.
In terms of cost, KICAN's customized motor is 30% cheaper than the original Komatsu motor, which helps the construction company save a lot of expenses. In terms of quality, KICAN has strict quality control. Each motor undergoes 120 hours of continuous load testing and anti - impact testing to ensure it can adapt to the harsh road reconstruction environment.
Thanks to KICAN's integrated production chain (from raw material processing to final assembly and testing), the production cycle is greatly shortened. After confirming the order, the customized motor was produced in 3 working days and delivered to the project site by express logistics, which is much faster than the 15 - day delivery time of the original motor.
When the customized hydraulic motor arrived, the maintenance team started the installation under the remote guidance of KICAN's engineers. The motor's perfect fit with the excavator's interface made the installation process very smooth, and it was completed in just 1.5 hours.
When Jake restarted the Komatsu PC200 - 11, he was delighted to find that the hydraulic motor rotated quickly and powerfully. The breaker on the bucket hit the old road surface with strong force, and the motor's speed remained stable even during long - term operation. He completed the road breaking task that was originally scheduled for a day in just half a day, and the excavator didn't have any abnormal noise or lag.
Lily was very satisfied with KICAN's solution. She said: "KICAN's customized motor solved our urgent problem. The fast delivery helped us catch up with the project progress, and the high - quality motor ensured the smooth progress of road reconstruction. The lower price also reduced our project costs. We are very happy with this cooperation."
Jake also shared his experience: "The new motor makes the excavator more powerful than before. When breaking hard concrete roads, it doesn't have the previous problem of insufficient power. The operation is more stable, and I don't have to worry about the motor breaking down suddenly. My work efficiency has increased a lot."
Up to now, the Komatsu PC200 - 11 with KICAN's customized hydraulic motor has been working stably for three months. It has successfully completed the road breaking and roadbed excavation work of 5 kilometers of municipal roads, ensuring the project is on track. The construction company has also signed a long - term cooperation contract with KICAN, and will choose KICAN's products first for future excavator hydraulic equipment maintenance and replacement.
