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Discover Superior Quality Excavator Parts and Accessories with Kyotechs

At Kyotechs, we take pride in offering an extensive selection of top-quality parts and accessories for excavators from leading brands such as Hitachi, Sany, Kawasaki, Volvo, and many more. Our wide range of products includes engine assemblies and parts, hydraulic pumps and parts, hydraulic motor assemblies and parts, control valve assemblies and parts, cylinder assemblies and seal kits, driving cabin assemblies and inside parts, electric parts, undercarriage parts, mini excavator accessories, pile drivers, hammers, and more.

Engine Assemblies and Parts

Our engine assemblies and parts are meticulously designed and manufactured to ensure optimal performance and durability. Whether you need a complete engine assembly or specific engine parts, Kyotechs has got you covered.

Hydraulic Pumps and Parts

Keep your excavator's hydraulic system in top condition with our High-Quality hydraulic pumps and parts. From pumps to hoses and fittings, we have everything you need to maintain the hydraulic system of your excavator.

Control Valve Assemblies and Parts

Efficiently control the hydraulics of your excavator with our high-quality control valve assemblies and parts. Our products are designed to meet the highest standards for reliability and performance.

Cylinder Assemblies and Seal Kits

Ensure smooth operation and long-lasting performance of your excavator with our cylinder assemblies and seal kits. Our products are meticulously crafted to deliver exceptional durability and functionality.

Driving Cabin Assemblies and Inside Parts

Enhance the comfort and functionality of your excavator's driving cabin with our High-Quality assemblies and inside parts. From seats to joysticks, we offer a wide array of products to meet your specific needs.

Electric Parts

Find a comprehensive range of electric parts for your excavator, including wiring harnesses, sensors, switches, and more. Kyotechs ensures that our electric parts meet the highest standards for reliability and performance.

Undercarriage Parts

Maintain the stability and maneuverability of your excavator with our top-notch undercarriage parts. From tracks to rollers and sprockets, we have everything you need to keep your machine moving efficiently.

Mini Excavator Accessories, Pile Drivers, Hammers, and More

Explore our selection of accessories and attachments for mini excavators, as well as pile drivers, hammers, and other specialized equipment. Kyotechs provides a one-stop solution for all your excavator needs.

In conclusion, Kyotechs is your trusted source for superior quality excavator parts and accessories. With our extensive product range and commitment to excellence, you can rely on us to keep your machines running at their best. Shop with confidence and experience the difference with Kyotechs.

FAQ:
Why does the hydraulic system overheat during excavation?

Possible low hydraulic oil level, clogged filter, excessive load, or cooling system failure. Solution: Check and refill hydraulic oil, clean or replace filter, reduce system load, check and repair cooling system.

How often should the coolant be changed?

Usually the coolant is changed every two years or as recommended by the manufacturer.

Why does the hydraulic system overheat quickly under low load?

Possible low hydraulic oil, clogged filter, high ambient temperature, or excessive load.

Solution: Refill hydraulic oil, clean or replace filter, ensure good ventilation, reduce system load.

What is the reason for the cylinder pulling in the excavator engine?

Reasons from the piston group
1. The piston ring gap is too small. If the opening gap, side gap or back gap of the piston ring is too small, the piston ring will be stuck due to heat expansion when the engine is working, and it will be pressed tightly against the cylinder wall, or the piston ring will be broken, which can easily pull out grooves on the cylinder wall.
2. The piston pin is out. Because the piston pin retaining ring is not installed or falls off or breaks, the piston pin will be out during movement, which can easily damage the inner wall of the cylinder and cause the cylinder to blow into the crankcase.
3. The piston cylinder gap is too small or too large. If the piston material is poor, the manufacturing size error is too large, or the piston is deformed after the piston pin is assembled, the matching gap between the piston and the cylinder is too small, and the piston is stuck after heat expansion, which will then damage the cylinder wall.
4. The piston ring is seriously carbonized. Excessive carbon deposits cause the piston ring to stick or bite in the ring groove. At the same time, carbon deposits are a hard abrasive that will grind into longitudinal grooves on the cylinder wall.
5. The piston is seriously off-cylinder. Due to the bending and twisting of the connecting rod, the parallelism and coaxiality deviations of the connecting rod journal, main journal, and piston pin seat are too large, causing the piston to be significantly off-cylinder, which will accelerate the wear of the piston ring, piston and cylinder wall and destroy the formation of the oil film.

 

Reasons for cylinder sleeves
1. The roundness and cylindricality tolerances of the cylinder sleeves exceed the allowable range, which greatly reduces the sealing of the piston and cylinder sleeves. The high-temperature gas in the cylinder flows down, destroying the oil film between the piston and the cylinder wall, and then causing cylinder pulling.
2. The cylinder sleeve is deformed during the assembly process. For example: the protrusion of the upper end surface of the cylinder sleeve is too large, and the cylinder sleeve is deformed after the cylinder head is installed; the cylinder sleeve water blocking ring is too thick, and the cylinder sleeve is deformed after being pressed into the body, which can easily cause cylinder pulling.

 

Reasons for use:
1. Whether the size of the cylinder sleeve used during assembly does not match the cylinder body and piston.
2. The air filter is not sealed, which makes the filtering effect worse. Dust, sand and other impurities in the air are sucked into the cylinder, forming abrasive wear. Tests show that if a few grams of dust are sucked in every day, the wear of the cylinder liner will increase by more than 10 times.

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