Komatsu 6136-32-2110 Piston 4D105

Product representation

Detailed product information

Material: usually made of high -strength aluminum alloy, has characteristics of lightweight and good thermal conductivity. It can effectively reduce engine weight and improve fuel savings. At the same time, good thermal conductivity helps to quickly dissipate heat, reduce the working temperature of the piston and renew the service life. In some high -performance models, special coatings, such as molybdenum coating, can be used on the piston surface, to increase wear resistance and corrosion resistance.

Structure: consists of three parts: piston head, piston skirts and holes under the piston finger. The piston head is the main part that perceives the pressure of the gas, and usually has recesses or protrusions of various forms to optimize the combustion process; The piston skirt is in contact with the cylinder wall, performing the guide and supporting role, and, as a rule, has a certain curvature and a gap to compensate for thermal expansion; The hole for the piston finger is used to install the piston finger, connection of the piston and connecting rod and power transmission.

Size: There are different sizes in accordance with the requirements of various models of Komatsu engines. For example, the diameter of the piston of the excavator engine Komatsu PC200-8, most likely, will be about 100 mm, and the piston height-from 120 mm to 150 mm.

Productivity parameters: if you take as an example the piston of the engine Komatsu Wa380-3, then the maximum pressure of the explosion that it can withstand can reach approximately 15–20 MPa, and the speed of reciprocating movement of the piston can reach a relatively high level at the rated engine speed, Usually from 8 to 12 m/s.

Stages of installation

Preparation: Prepare tools, such as a device for compressing piston rings, a key of connecting rods, special tools for disassembling and assembling cylinder sleeves, a micrometer for measuring the internal diameter, etc. Clean the interior of the engine, delete the fog and dirt, check, no whether scratches or wear on the walls of the cylinders.

Install the piston ring: insert the piston rings into the grooves of the piston rings at a time, making sure that the openings of the piston rings are displaced by 120 °, and apply a small amount of motor oil to the upper part of the piston.

Gather the piston and the connecting rod: put on the smaller end of the connecting rod on the piston finger, press and fix it with a special tool, make sure that the piston finger and the hole of the smaller end of the connecting rod are in good alignment, and measure the gap between the piston skirt and the cylinder wall using the internal micrometer for measuring the internal diameter.

Set the connecting rod cover and bolts: combine the connecting rod cover with the big end of the connecting rod and tighten it with the bolts of the connecting rod, following the principle of "gradual puff from the middle to both sides several times."

Install the piston: place the assembled piston node in the cylinder, squeeze it using a device for compressing the piston rings, carefully turn the cranks by hand so that the piston reaches the lower dead point, and check the gap between the piston skirt and the cylinder wall.

Common malfunctions

Distance of the piston: including wear of the piston skirts, wear of the grooves of piston rings, wear of the upper part of the piston, etc. The reasons can be: insufficient lubrication, incomplete combustion, excessive thermal load, hitting mechanical impurities, improper assembly, etc.

Piston deformation: pistons are subject to thermal deformation under the influence of high temperature and high pressure, which leads to a change in the clearance from the cylinder wall and an increase in wear. The main reasons are excessive thermal loads caused by the malfunctions of the cooling system and the unreasonable design of the combustion chamber.

The jammed or broken piston ring: a jammed or broken piston ring can lead to a leak in the engine and a decrease in compression pressure due to the accumulation of soot, insufficient lubrication, etc.; A broken piston ring can also cause similar problems that can be caused by the low quality of the piston ring, improper assembly, etc.

Cracks or ablation on the surface of the piston: cracks on the surface of the piston affect strength and tightness, and ablation increases wear, usually due to excessive thermal load, concentration of mechanical stresses, low quality fuel, etc.

After -sales service

Warranty service: a guarantee for a certain period of time, usually 1 year or a certain number of hours of operation, is usually applied to the pistons of the Komatsu engines, depending on what will occur earlier. During the warranty period, any malfunction or damage caused by inhuman factors may be replaced or repaired for free.

Supply of accessories: Komatsu has a complete system of access of accessories, which can supply original pistons and related accessories in a timely manner, guaranteeing the quality and compatibility of accessories.

Technical support: providing professional technical consulting services. If users are faced with problems during installation, use and maintenance, they can get the maintenance through hot lines of customer service, online consultations, etc.

Maintenance: We have a professional maintenance team and service centers throughout the country that provide service on the spot or returned to the plant for repair. Technical maintenance staff can quickly diagnose and eliminate malfunctions associated with pistons.

Regular repeated visits: regular repeated visits to users to study the features of the use of pistons and user needs, collect reviews and constant improvement of products and services.

After -sales maintenance of the piston engines Komatsu usually includes the following aspects:

Warranty service

Warranty period: As a rule, the warranty period is 1 year or a certain number of working hours (for example, 2000 hours), depending on what will come earlier.

The warranty volume: during the warranty period, if the piston is damaged or faulty due to inhuman factors, such as defects in the material, problems of the production process, such as piston cracks, abnormal wear of the piston ring, etc., Komatsu will repair or replace it for free.

Supply of accessories

Original accessories: Make sure that the pistons and related accessories are the original Komatsu products that guarantee compatibility and compliance with the engine, reliable quality and efficient maintenance of engine performance.

Timely supplies: thanks to the integrated logistics distribution network and the reserves of spare parts, we can quickly respond to customer needs, supply the necessary spare parts and reduce equipment downtime.

Technical support

Consulting services: providing users with professional technical advice and answers to questions about installing, using pistons, faults, etc. Support can be obtained on a hot line of customer support service, by e-mail, through the online customer support service and other channels.

Tuition services: regularly or irregularly conducting technical training courses for large corporate customers or professional maintenance personnel in order to clarify the principles of design, methods and points of service, as well as other knowledge about Komatsu pistons to increase the capabilities of technical maintenance users.

Repair services

Maintenance on the spot: In some emergency situations or for large equipment, Komatsu organizes the involvement of professional personnel for maintenance on the spot, quick diagnosis and elimination of malfunctions associated with pistons and engines, as well as restoration of equipment.

Factory repairs: for complex malfunctions or situations requiring more specialized equipment and technologies, the piston or engine can be returned to the factory for repair. After the repair, strict tests and quality tests will be carried out to guarantee compliance with factory standards.

A guarantee of repair quality

Quality control: repaired pistons and engines undergo strict quality control and testing, including pressure tests, tightness tests, operational tests, etc., to guarantee the quality of the repair.

After -sales tracking: Subsequent interaction with the User after maintenance, to understand the use of the piston and the working condition of the equipment, collect reviews and eliminate possible problems in a timely manner.

Emergency response services

A round -the -clock hotline of service: Create a 24 -hour hotel hotline in order to respond to customers about faults and emergency requests at any time, guaranteeing the provision of support in the shortest possible time.

The reserve of spare parts for an emergency situation: for some wear -long parts and key components, such as pistons, a reserve of spare parts for an emergency situation was created so that they can be quickly involved in an emergency to meet the needs of customers for maintenance.

Exhibition cabinets

Acquaintance with the plant

The plant operates a team of highly qualified and experienced engineers who continuously introduce technological innovations and improve products. Currently, the company has a number of independent intellectual property rights and patented technologies. The manufactured construction equipment includes a wide range of equipment such as excavators, loaders, taps, bulldozers and other machines. Products are highly productivity, reliability, energy efficiency and environmental friendliness, as well as the ability to adapt to difficult operating conditions in various climatic and working media around the world.

Awards and fightsFixation

frequently asked questions

1. In which countries are we exporting?

Asia: Vietnam, India, Indonesia, Pakistan, Kazakhstan, Uzbekistan, etc.

Europe: Russia, Belarus, Ukraine, Lithuania, Saudi Arabia, etc.

South America: Brazil, Chile, Paraguay, Argentina, etc.

Africa: South Africa, Ethiopia, Libya, etc.

2. What kind of payment conditions can we accept?

Usually we can work on T/T, 30% TT before production and 70% TT before shipping

3. What ways can we work for delivery?

1) for most countries in Europe, South America and Africa, etc. We can go along the container or Roro through the ocean freight.

2) for neighboring countries of China, such as Russia, Vietnam, Kazakhstan, Uzbekistan, etc. We can deliver by road or railway.

3) for light spare parts in the urgent requirement, we can send it using the international courier service, such as DHL, TNT, EMS or other air transportation.

4. How can you guarantee that you delivered goods to customers?

A: We will provide you with complete information about delivery for you.

5. What are our advantages compared to other manufacturers/factories?

1) Reliable quality: we carefully choose permanent manufacturers to support spare parts, such as engines, bridges, transmission, and many parts developed and produced by us always adapting the best materials.

2) a competitive price: the concentration of mechanized production in large quantities reduces production costs to ensure a competitive price.

3) The service team: firstly, our sales managers work 24 hours a day, are ready to answer your questions at any time. Secondly, a professional training team with senior equipment, ready to provide support services to users and dealers. Most problems can be solved within 24 hours.

4) Fast delivery: As a rule, we can deliver within 10 working days at the plant after receiving prepayment from customers.

6. How can you provide customers after sales service?

A: We will answer you at first and help you solve problems within 24 hours. If we really need your local, we

We will send your professional person to your settlement to help you solve problems without any fluctuations, supply you with comprehensive