Tag: Engine

Article about engine

Volvo D12DAAE2 Engine Tuning

Engine timing is a crucial task to ensure optimal performance and engine longevity. In this blog, Taoparts experts will guide you through the process of tuning the Volvo D12DAAE2 engine, used in the A35D articulated dump truck. We will also discuss the specific tolerances for the intake and exhaust valves.

Materials Needed

  • Adjustment tools (torque wrench, micrometer, valve gauge)
  • Volvo D12DAAE2 engine service manual
  • New engine oil and filters
  • Protective gloves and glasses

Engine Tuning Steps

Volvo A35D swing motor

1. Preparation

  • Disassembly: Start by disassembling the engine and making sure all parts are clean and free of debris.
  • Component Inspection: Inspect engine components such as pistons, connecting rods, and rings to make sure there is no damage.

2. Adjusting the Intake Valves

  • Valve Clearance: Use the valve gauge to measure the intake valve clearance. Adjust the valves to the specified tolerance of 0.2 mm.
  • Check: Check the valve clearance again to make sure it is within tolerance.

3. Adjusting the Exhaust Valves

  • Valve Clearance: Similar to intake valve adjustment, measure the exhaust valve clearance and adjust to the specified tolerance of 0.5 mm.
  • Check: Check the exhaust valve clearance again to ensure it is within tolerance.

4. Displacement Adjustment

  • Compression: Perform a compression test to ensure the engine is under proper pressure.
  • Cylinder Adjustment: Adjust the cylinders to service manual specifications.

5. Assembly and Testing

  • Reassembly: Reassemble the engine and replace all components that were removed.
  • Functional Tests: Perform functional tests to ensure that the engine runs properly and without problems.
Volvo D12DAAE2

Conclusion

Volvo D12DAAE2 engine timing is a detailed process that requires precision and attention to detail. By following these steps and ensuring that the valves are adjusted to the specified tolerances, you can keep your engine in top condition and extend its life.

The importance of a good timing cannot be underestimated. A well-tuned engine not only ensures smooth and efficient operation, but also prevents premature component wear. By keeping intake and exhaust valves within proper tolerances, combustion is optimized and engine power is maximized, resulting in superior performance and lower fuel consumption.

Additionally, regular engine tuning is essential to detect any potential problems early. By inspecting and adjusting valves and cylinders, mechanics can identify and correct small problems before they become major failures. Not only does this save time and money on costly repairs, it also extends engine life and ensures vehicle safety.

At Taoparts, our highly trained mechanics use the most advanced tools and techniques to perform engine tune-ups with the utmost precision. We are committed to quality and customer satisfaction, ensuring that every engine that passes through our hands performs to the best of its ability.

Proper care and maintenance of your A35D articulated dump truck not only improves its performance, but also ensures that it’s ready to meet any challenges that come your way on the jobsite. Trust Taoparts to keep your equipment in top condition and maximize its efficiency and durability.

Contact us for all your spare parts needs!

Do you need spare parts for your heavy machinery? Look no further. Contact Taopparts and we will provide you with the original spare parts you need to keep your machine running at peak performance.

www.taopparts.com

Valve adjustment in Komatsu engine

Valve timing on a diesel engine, such as the Komatsu SAA6D125E-5, is a critical procedure to maintain its optimal performance. This engine is mounted on Komatsu machines, such as the PC450LC-7 excavator, the WA480-6 loader or the HM300-2 articulated dumper. In this blog we will also address the verification of the axial play of the engine of this machine.

Komatsu SAA6D125E-5 Engine Valve Adjustment

1. Tools needed:

Before you begin, make sure you have the following tools on hand:

  1. Ratchet wrench: Useful for loosening and tightening valve nuts.
  2. Wrench and screwdriver set: To access the relevant engine parts.
  3. Calibration thickness gauge: Also known as gauges or calipers, it is used to measure the clearance between valves and camshafts.
  4. Torque wrench: Necessary to apply the correct force when tightening the valve nuts.
  5. Calibration Sheets: Provide precise specifications for valve adjustment.
  6. Engine service manual: contains precise information about the engine and manufacturer’s recommendations.

2. Preparation:

Locate the valves:

Identify the exhaust and intake valves on the engine. In the case of the SAA6D125E-5, this engine has 6 cylinders and 24 valves (12 exhaust and 12 intake).

Engine position:

Place the engine at the top dead center (TDC) of the number 1 cylinder. Consult your engine manual to find the reference mark on the crankshaft pulley.

What is an intake valve?

The intake valve is responsible for allowing the air-fuel mixture to enter the engine’s combustion chamber. During the intake phase of the engine cycle, this valve opens so that the mixture can enter and prepare for combustion.

What is an exhaust valve?

The exhaust valve, on the other hand, is responsible for expelling the burned gases resulting from combustion out of the combustion chamber. This valve opens during the exhaust phase of the engine cycle, allowing exhaust gases to be expelled through the exhaust manifold.

Main differences

  1. Function: The intake valve introduces the air-fuel mixture, while the exhaust valve expels the burned gases.
  2. Temperature: The exhaust valves support higher temperatures due to the hot combustion gases, reaching between 600º and 800º Celsius, while the intake valves handle lower temperatures, between 200º and 400º Celsius.
  3. Material: Exhaust valves are made of more heat-resistant materials, such as stainless steel alloys, to withstand high temperatures.
  4. Size: Intake valves are usually larger than exhaust valves to allow greater air intake and improve engine efficiency.

3. Measurement and Adjustment:

  • Exhaust valves:
  • Using the torque wrench, loosen the exhaust valve locknut.
  • Use the feeler gauges or calipers to measure the clearance between the cam and the valve. Adjust if necessary.
  • The recommended clearance for the exhaust valves is 0.71 mm
  • Intake Valves:
  • Repeat the same process for the intake valves.
  • The recommended clearance for the intake valves is 0.33 mm
komatsu engine valve adjustment

Tighten the locknut:

Once the valves are adjusted, tighten the locknut without moving the valve position. In the following image you can see a Taopparts mechanic carrying out this task.

Ajuste de valvulas

4. Verification:

1. Turn the engine:

Crank the engine manually several times to ensure there is no interference between the valves and pistons.

2. Check again:

Remeasure the valves after cranking the entire engine.

Make sure all valves are within the specified range.

Valve timing has a significant impact on engine performance. Here are some of the ways it affects:

  • Combustion Efficiency:
  • The valves control the air intake and exhaust gas output. If the valves are not properly adjusted, the air-fuel mixture may be inadequate, which affects combustion efficiency.
  • Power and Torque:
  • Incorrect adjustment can affect engine power and torque. Valves that are too tight or too loose can decrease overall power and performance.
  • Emissions:
  • Valves influence emissions. If the exhaust valves are not closed properly, exhaust gas leaks may occur, increasing pollutant emissions.
  • Noise and Vibration:
  • Poorly adjusted valves can cause excessive noise and vibration. Proper adjustment helps reduce these discomforts.
  • Engine Durability:
  • Poorly adjusted valves can cause premature wear on engine components such as camshafts and valve guides.

In summary, accurate valve timing is essential for optimal performance of the Komatsu SAA6D125E-5 engine in terms of power, efficiency and durability.

How to Check Axial Play on a Komatsu SAA6D125E-5 Engine

Axial play refers to the lateral movement allowed between the rotating parts of the engine. In the case of the Komatsu SAA6D125E-5 engine, it is important to check it to ensure optimal operation. Follow these steps:

  1. Preparation:
  2. Top Dead Center (TDC) Location:
    • Crank the engine manually until the number 1 cylinder reaches top dead center (TDC). Consult your manual to find the reference mark on the crankshaft pulley.
  3. Axial Play Measurement:
    • Use a magnetic dial gauge to measure axial movement in the crankshaft.
    • Place the dial gauge so that its tip touches the end of the shaft.
    • Rotate the crankshaft while checking the end play.
  4. Comparison with Specifications:
    • Consult the manual for the exact end play specifications for the SAA6D125E-5 motor.
    • The axial play should be in the range 0.14 – 0.315 mm.
  5. Registration and Document
    • Record the measured values ​​and any adjustments made on a recording sheet.
Magnetic comparator clock

At TaopParts, each Komatsu engine goes through a rigorous verification process before being offered for sale. Mechanics not only perform axial adjustment, but also perform compression tests and other evaluations to ensure the engine is in perfect condition.

At Taopparts, we are committed to offering the highest quality spare parts and services so that our customers can operate with maximum efficiency and peace of mind.

Contact us for all your spare parts needs!

Do you need spare parts for your heavy machinery? Do not look any further. Contact Taopparts and we will provide you with the original spare parts you need to keep your machine running at peak performance.

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The Liebherr Excavator: An Icon in the Construction Industry.

Since its founding in 1949, Liebherr has been a key player in the construction industry, manufacturing high-quality machinery for projects of all types and sizes. With a wide range of products including cranes, trucks, excavators, and loaders, it has earned a reputation as a leading brand in its field.

Excavators have become an icon of the brand, being used in construction projects all over the world. From demolishing buildings to constructing roads and bridges, they have demonstrated their versatility and reliability in a wide variety of applications.

History and applications of Liebherr excavators

In 1967, Liebherr introduced its first hydraulic excavator, revolutionizing the heavy machinery market and setting new standards for performance and efficiency.

Within its wide range of machinery, they have become one of the brand’s icons. These machines, mainly used in construction and mining jobs, have evolved over the years to adapt to the needs of each project.

From compact equipment for work in tight spaces to large machines for larger projects, Liebherr has developed a wide range of machinery to meet the needs of its customers.

The Liebherr R926LC Litronic excavator: features and main components

Among the most prominent models is the R926LC Litronic, which is characterized by its high efficiency and its ability to work in demanding conditions.

R926 Liebherr

It is a medium-sized model designed to offer high efficiency and productivity in excavation and earthmoving work. Among its main features are:

  • Engine

    : The R926LC Litronic features a Liebherr 150 kW diesel engine compliant with European level V regulations.

  • Hydraulic system:

    The excavator’s hydraulic system has a flow capacity of 2 x 265 l/min and a maximum pressure of 365 bar.

  • Cab:

    The operator’s cab is spacious and designed to offer excellent visibility and comfort. It features an air-suspended seat, a color touchscreen for machine control, and air conditioning.

R926 Liebherr

  • Control system:

The Litronic control system allows precise control of the machine and provides a wealth of information on its performance and condition.

  • Main components:

Main components include the mainframe, boom, arm, bucket, undercarriage, and tracks. All of them are designed and built with high-quality materials to ensure machine durability and performance.

Confidence in quality

Liebherr has established itself as a leading brand in the sector thanks to its constant innovation and technological development. Its machines offer high performance, great efficiency, and long-term reliability, making them a reliable choice for all types of construction projects.

At TAOP PARTS, the inclusion of this great brand in our offering reaffirms our commitment to warranty, quality, and excellence, allowing us to provide our customers with the best solutions for their needs.

Do not hesitate to contact us.

info@taopparts.com

Presentation of machinery catalog updated 2020

Catalog updated 2020

 

our machine's fleet

Spare parts available: Engine, Transmission, Refrigeration, Electrical System, Hydraulic System, Pneumatic System, Axes and Filming.

Therefore, we have more than 10,000 spare parts in our stock.

The engine: the element that converts power into hydraulic force

The engine represents one of the most important elements of excavators, loaders, dump truck, bulldozers, backhoe loaders and mini excavators.

Obviously, each type of machine will have a specific engine to adapt to the size and capacity of each individual machine.

Find the used spare parts komatsu volvo jcb

Taop Parts, leader of the sale of original re-usable spare parts sector, checks the functioning of each engine before dismantling, certifying its correct functionality. As mentioned, each machine has a different type of engine. Let’s see what the characteristics are. Continue reading The engine: the element that converts power into hydraulic force

Stock extension: Volvo L110G Wheel Loader

 

The most versatile machine in the VolvoCe range arrives at our facilities. The Volvo L110G Wheel Loader is designed to move and load various types of materials and to work on many job sites.

Find the used spare parts komatsu volvo jcb

Taop Parts technicians have checked the functionality, both general and of the engine; below are the test videos.

General functionality

Engine funcionality

All spare parts are in perfect condition and available for sale.

Continue reading Stock extension: Volvo L110G Wheel Loader

THE BACKHOE LOADER: the masterpiece of heavy machines

The backhoe loader is an essential machine in earthmoving works. Due to their (relatively) small size and versatility, backhoes are very common in urban engineering projects and small construction projects (such as building a small house, repairing urban roads, etc.).

Continue reading THE BACKHOE LOADER: the masterpiece of heavy machines

How to detect problems in the fluid system of wheel loaders, bulldozers, dumpers and excavators

Efficiency is a key issue when we talk about the operation of excavators, loaders, dumpers, bulldozers, etc.

The owners of heavy machines and their operator use fewer resources to complete certain jobs than others, certainly have a competitive advantage because they use the equipments more effectively.

Scheduled and preventive maintenance, which we always recommend to be carried out regularly, is the best ally to avoid breakdowns and damage to the machine.

In this article we will deal with a very important topic, namely how to detect any contamination in the fluids present in a heavy machine.

used spare parts komatsu volvo jcb

Continue reading How to detect problems in the fluid system of wheel loaders, bulldozers, dumpers and excavators

Stock extension! Last Komatsu and Volvo construction equipment arrived ready to be dismantled

Taop Parts buys several earthmoving machines every year to restore the used spare parts warehouse. A few machines have arrived in recent weeks. Let’s see them.

used spare parts komatsu volvo jcb

Continue reading Stock extension! Last Komatsu and Volvo construction equipment arrived ready to be dismantled