Premium Replacement Parts for Cummins NT855 Engines

Welcome to Honour Time Machinery Limited. We are a premier supplier of high-quality aftermarket and replacement parts for heavy-duty engines. We are proud to feature our components for the reliable Cummins NT855 engine series. Whether you are performing a complete overhaul or routine maintenance, we have the precise parts you need, including pistons and cylinder liners.

Detailed Specifications: Piston 6711-31-2110

We provide complete transparency for our components. Below are the detailed specifications for our Piston 6711-31-2110, compatible with OEM part 6711-31-2010.

About Honour Time Machinery Limited

Honour Time Machinery Limited is your trusted partner for engine assemblies and spare parts. We specialize in a wide range of brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai.

Our main engine products include:

• Cylinder Liner

• Piston

• Piston Ring

• Crankshaft Bearing

• Connecting Rod Bearing

• Thrust Washer

• Overhaul Kit

• Diesel Pump

• Injector

• Crankshaft

• Turbocharger

• Water Pump

• Oil Pump

• Cylinder Block

• Cylinder Head

• Connecting Rod

Explore Our Engine Solutions

We serve a global clientele with parts for every need. Find us with these terms:

• heavy machinery engine parts supplier

• diesel engine components for Komatsu

• Caterpillar C-series engine parts

• Cummins NT855 rebuild kit

• Kubota V2403 engine parts wholesale

• Isuzu 6HK1 diesel engine piston

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Understanding Your Engine: Key Components

Here are definitions for common parts found in heavy machinery:

1. Komatsu SAA6D114E Engine Piston

The piston is a component of reciprocating engines. It is contained in a cylinder and is made gas-tight by piston rings. It moves up and down in the cylinder to compress gases and transmit force. Location: Inside the cylinder block.

2. Caterpillar 3306 Engine Cylinder Liner

A cylinder liner (or sleeve) is a cylindrical part placed in the engine block to form the cylinder. It provides a hard-wearing surface for the piston and rings. Location: Inserted into the engine block.

3. Cummins 6BT Engine Piston Ring

A piston ring is a split ring that fits into a groove on the outer diameter of a piston. It serves to seal the combustion chamber, support heat transfer, and regulate oil consumption. Location: In the grooves of the piston.

4. Isuzu 4HK1 Engine Connecting Rod Bearing

Also known as a big-end bearing, it is a split plain bearing used on the connecting rod where it journals to the crankshaft. Location: Between the connecting rod and the crankshaft.

5. Kubota D902 Engine Crankshaft

The crankshaft translates the linear motion of the pistons into rotational motion. Location: In the lower part of the engine block.

6. Yanmar 3TNV88 Engine Injector

A fuel injector sprays diesel fuel into the combustion chamber at the precise moment for ignition. Location: In the cylinder head, with the nozzle tip in the combustion chamber.

7. Weichai WD615 Engine Turbocharger

A turbocharger is a forced induction device that uses exhaust gases to spin a turbine, which in turn spins a compressor to force more air into the cylinders. Location: Attached to the exhaust and intake manifolds.

8. Komatsu PC200-8 Excavator Water Pump

The water pump circulates coolant through the engine, radiator, and hoses to maintain optimal operating temperature. Location: Mounted on the front of the engine block, driven by a belt.

9. Caterpillar 320D Excavator Oil Pump

The oil pump circulates engine oil under pressure to the bearings, pistons, and camshaft to lubricate and cool them. Location: Typically inside the oil pan, driven by the crankshaft.

10. Cummins KTA19 Engine Cylinder Head

The cylinder head sits on top of the cylinder block, closing the top of the cylinders to form the combustion chambers. It also houses the valves, injectors, and camshafts. Location: Atop the engine block.

Troubleshooting: Komatsu PC300-7 Engine Overheating

Equipment:

Komatsu PC300-7 Excavator with SAA6D114E Engine

Fault:

The engine experiences rapid overheating, and coolant is being lost from the expansion tank overflow.

Analysis:

This symptom often points to over-pressurization of the cooling system, which is caused by combustion gases entering the coolant. The most common causes are a failed cylinder head gasket or a cracked cylinder liner. A cracked liner, such as a Komatsu 6710-21-2210, can develop a micro-fracture that opens under high temperature and pressure, allowing coolant into the combustion chamber (visible as white smoke) or combustion gas into the coolant jacket.

Solution:

1. Initial Diagnosis: Perform a bubble test. With the engine running and radiator cap off, look for a constant stream of bubbles in the coolant, indicating gas leakage.

2. Pressure Test: Conduct a cooling system pressure test to see if it holds pressure. Also, test the radiator cap to ensure it holds the correct pressure.

3. Disassembly: If tests confirm a leak, begin engine disassembly. Remove the cylinder head.

4. Inspection: Carefully inspect the cylinder head gasket for any breaks or compromised fire rings. Check the cylinder head and engine block surfaces for warping using a straight edge.

5. Component Testing: Send the cylinder head to a machine shop for pressure testing to check for cracks.

6. Liner Inspection: Carefully inspect all cylinder liners (sleeves) for vertical cracks or signs of pitting. A dye penetrant test can reveal fractures invisible to the naked eye.

7. Replacement: Replace all faulty components. This includes the head gasket, any cracked or warped cylinder heads, and any compromised cylinder liners.

8. Reassembly: Reassemble the engine using new gaskets and seals. Ensure all bolts are torqued to the manufacturer's exact specifications in the correct sequence. Refill the cooling system and check for leaks.

Contact Us Today

Get in touch with the Honour Time team for quotes, questions, or to place an order. We are ready to help you find the right parts at a competitive price.

WhatsApp: +8613532379052

Email: [email protected]