Your trusted partner for 6271-31-2300 Piston and Heavy equipment piston ring replacement solutions.
As a factory-direct and original source manufacturer, Honour Time Machinery Limited offers comprehensive foreign trade export services. We specialize in the customization and development of various engine components, particularly Cylinder Liners, ensuring perfect fit and top quality for even the most unique machinery.
Komatsu PC200-8 Cylinder Liner | Caterpillar 320D Cylinder Liner | cummins QSB6.7 Cylinder Liner
Honour Time Machinery Limited provides reliable, high-quality engine components essential for maintaining the performance of your construction machinery. We stock the critical Komatsu 4D95 parts you need, ensuring longevity and efficient operation. Below are the core product details for the 4D95 Engine.
| Engine Model No | Piston Part No | Alternative Piston No | Liner Part No | Piston Ring Part No |
|---|---|---|---|---|
| 4D95 | 6271-31-2300 | 6271312300 | 6204-21-2110 | 6204-31-2030 |
| Piston Specification | Liner Specification | Ring Set Specification |
|---|---|---|
| Piston No: 6271-31-2300 | Liner No: 6204-21-2110 | Ring Set No: 6204-31-2030 |
| Bore Diameter: 95mm | Inside Bore: 95mm | RIK No: 33735 |
| No. of Cyl: 4 | Bottom Outside: 100mm | TP No: TKS-45371 |
| Total Length: ~91mm | Total Length: 170mm | NPR No: 35706 |
| Comp Height: ~56.2mm | Top Outside: 104mm (Flange) | Top Ring: 2.0mm |
| Chamber Dia: 53mm | Flange Depth: 6.5mm | 2nd Ring: 2.0mm |
| Ring Groove: 2.0/2.0/4.0 | Surface Treatment: Anti-Rust Coating | Oil Ring: 4.0mm |
| Pin Size: 30 x 70mm | FF/SF: Semi-Finished | Bushing No: 6204-31-3610 |
Honour Time Machinery Limited is a leading supplier of engine rebuilding parts wholesale, catering to global markets with a focus on quality and reliability. We specialize in parts for major brands including cummins, komatsu, Caterpillar, isuzu, kubota, yanmar, and weichai.
Our extensive product line covers complete engine overhaul kit price solutions and individual components:
Cylinder Liner and Piston sets, Piston Ring sets for construction machinery.
Precision-engineered Crankshaft Bearing (main bearing) and Connecting Rod Bearing (con rod bearing), along with Thrust Washer.
Comprehensive Overhaul Kit and specialized parts like Diesel Pump and Injector.
Major engine assemblies including Crankshaft, Turbocharger, Water Pump, Oil Pump, Cylinder Block, Cylinder Head, and Connecting Rod.
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Understanding the role and location of critical components is vital for effective maintenance.
Cylinder Liner (Liner): Installed in the cylinder block, it forms the combustion chamber and guides the piston. Keyword Example: Komatsu PC75-1 Liner
Piston Ring: Installed in the piston ring grooves. Function: Seals the combustion chamber, transfers heat, and regulates oil consumption. Keyword Example: Cummins QSB6.7 Piston Ring
Thrust Washer: Installed on the crankshaft main bearing journals. Function: Absorbs axial movement of the crankshaft. Keyword Example: Caterpillar 320D Thrust Washer
Connecting Rod Bearing (Con Rod Bearing): Installed between the connecting rod and the crankshaft journal. Function: Reduces friction for connecting rod rotation. Keyword Example: Isuzu 4HK1 Con Rod Bearing
Turbocharger: Bolted to the exhaust manifold. Function: Increases engine power by forcing more air into the cylinders. Keyword Example: Weichai WP12 Turbocharger
Oil Pump: Inside the engine oil pan or timing cover. Function: Circulates lubricating oil throughout the engine. Keyword Example: Kubota V3307 Oil Pump
Water Pump: Attached to the cylinder block/timing cover. Function: Circulates coolant through the engine and radiator. Keyword Example: Yanmar 4TNV88 Water Pump
Injector (Fuel Injector): Installed in the cylinder head. Function: Sprays precise amounts of fuel into the combustion chamber. Keyword Example: Komatsu PC200-8 Injector
Crankshaft: Runs along the bottom of the engine block. Function: Converts the reciprocating motion of the pistons into rotational motion. Keyword Example: Cummins M11 Crankshaft
Cylinder Head: Sits on top of the cylinder block. Function: Seals the top of the cylinder and houses the valves and injectors. Keyword Example: Caterpillar D6T Cylinder Head
A common issue reported for the Komatsu PC200-8 Excavator powered by the 6D107 engine is excessive black smoke and lack of power under load. Black smoke indicates incomplete combustion, usually due to too much fuel or not enough air.
The initial step is to perform a detailed inspection of the fuel system pressure and confirm that the fuel filter is clean. If the filter is clogged, fuel delivery is restricted. Next, the turbocharger should be inspected for damage to the impeller (on both the intake and exhaust sides), as a failure here will prevent adequate air compression. A common cause for this specific Komatsu model is a failing fuel injector or a leak in the air intake system (e.g., a cracked intercooler hose or loose clamp). A full diagnostic requires checking injection timing and turbo boost pressure using specialized diagnostic tools to pinpoint the exact failure point before replacing expensive components like the Komatsu PC200-8 Injector.
Contact Honour Time Machinery Limited today for factory-direct pricing on all 4D95 and major brand engine components.
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