Honour Time: Your Premier Source for Komatsu 4D94 Engine Piston & Liner Kits

Honour Time: Your Premier Source for Komatsu 4D94 Engine Piston & Liner Kits

Engineered Excellence: Custom Cylinder Liner Solutions

As a direct source manufacturer  with significant foreign trade export experience, Honour Time offers comprehensive customization and development services for various diesel engine cylinder liners.

We can support your needs for high-precision components like the Caterpillar C7 Cylinder Liner, the robust Cummins QSB6.7 Cylinder Liner, and the reliable Isuzu 4JB1 Cylinder Liner. Trust our factory direct quality for your most demanding engine repair needs.

Welcome to Honour Time Machinery Limited, your trusted global partner specializing in high-quality diesel engine components and comprehensive overhaul solutions. We pride ourselves on supplying reliable aftermarket replacement parts for major heavy equipment brands. Today, we highlight our top-tier components for the Komatsu 4D94 engine, a common power unit in construction machinery. Our inventory includes precision-engineered parts such as the Piston No: 6142-32-2110, the compatible Cylinder Liner No: 6144-21-2211, and the essential Piston Ring Set No: 6142-32-2020, ensuring your equipment's optimal performance.

Detailed Komatsu 4D94 Component Specifications

To assist with accurate procurement and installation, here are the detailed specifications for the Komatsu 4D94 engine components, including their non-hyphenated part numbers (for simplified search queries) and essential technical details.

Comprehensive Diesel Engine Solutions by Honour Time

Honour Time Machinery Limited is a leading supplier of complete diesel engine overhaul solutions. We stock and manufacture high-quality engine assembly units and a wide range of individual parts for brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our core product range focuses on precision-machined engine components like the Cylinder Liner, Piston, Piston Ring, Main Bearing, Con Rod Bearing, Thrust Washer, Overhaul Kit, Diesel Pump, Injector, Crankshaft, Turbocharger, Water Pump, Oil Pump, Cylinder Block, Cylinder Head, and Connecting Rod.

We specialize in offering robust solutions for heavy equipment engine repair. Whether you need a Komatsu 4D94 rebuild kit, a specific replacement piston for Yanmar machinery, or a Caterpillar C9 injector nozzle, we have the stock. We ensure our products meet the demanding needs of heavy duty engine overhaul projects globally. Contact us for competitive pricing on your next order of genuine engine components and reliable engine spare parts. Our inventory is perfect for those searching for diesel engine parts wholesale, high performance piston rings, and specialized parts like the full engine gasket set or crankshaft main bearing supplier.

Engine Component Glossary & Specific Applications

To illustrate the precise application of our products, here are explanations and usage examples for 10 common heavy machinery engine components:

1. Cylinder Liner: A replaceable cylindrical sleeve fitted into the engine block to form the cylinder wall. Installed in the: Cylinder Block. Example: Isuzu 4BG1 Cylinder Liner in an Isuzu mini excavator.

2. Piston: A component that moves up and down within the cylinder, transferring force from expanding gas to the crankshaft. Installed in the: Cylinder. Example: Komatsu 4D94 Piston in a Komatsu PC27R-8 mini excavator.

3. Piston Ring: Seals the combustion chamber, transfers heat from the piston to the cylinder wall, and regulates oil. Installed in the: Piston Grooves. Example: Weichai WD615 Piston Ring Set in a Weichai-powered loader.

4. Main Bearing: Supports the crankshaft, allowing it to rotate smoothly within the engine block. Installed in the: Cylinder Block. Example: Caterpillar C9 Main Bearing in a Caterpillar 330D excavator.

5. Thrust Washer: Prevents excessive axial (side-to-side) movement of the crankshaft. Installed in the: Crankshaft Saddle. Example: Cummins QSB6.7 Thrust Washer in a Cummins-powered agricultural tractor.

6. Injector: Atomizes and sprays fuel into the combustion chamber or intake manifold. Installed in the: Cylinder Head. Example: Kubota V3300 Injector Nozzle in a Kubota M8540 tractor.

7. Crankshaft: Converts the reciprocating motion of the pistons into rotational motion. Installed in the: Cylinder Block. Example: Yanmar 4TNV94L Crankshaft in a Yanmar VIO45 mini excavator.

8. Turbocharger: A forced induction device that increases an engine's power by forcing extra compressed air into the combustion chamber. Installed on the: Exhaust Manifold. Example: Caterpillar C15 Turbocharger in a Caterpillar 777F haul truck.

9. Water Pump: Circulates coolant through the engine block, cylinder head, and radiator to maintain optimal operating temperature. Installed on the: Engine Block/Front Housing. Example: Komatsu SAA6D140E Water Pump in a Komatsu HD325-7 dump truck.

10. Connecting Rod: Connects the piston to the crankshaft, transmitting the combustion force. Installed between the: Piston and Crankshaft. Example: Isuzu 6HK1 Connecting Rod in an Isuzu FTR truck.

Technical Tip: Diagnosing Piston Scoring in Heavy Equipment

Kubota V2403-M Piston Scoring & Troubleshooting

Piston scoring (deep vertical lines on the piston skirt and cylinder wall) is a common failure, often leading to excessive blow-by and oil consumption. A typical instance is found in the Kubota V2403-M Piston operating in a Kubota KX121-3 excavator.

Cause: The most frequent cause is localized overheating due to inadequate clearance between the piston and the cylinder liner, or insufficient lubrication. This can be caused by engine running too hot, incorrect assembly of the piston and liner kit, or fuel dilution in the oil compromising its viscosity.

Solution: The engine must be disassembled. If scoring is present, both the Piston and Cylinder Liner must be replaced. Ensure the new components (such as our 6142-32-2110 Piston and 6144-21-2211 Liner for the Komatsu 4D94) are dimensionally checked before installation. Always verify the cooling system is functioning correctly and use the manufacturer's specified oil and oil change intervals to prevent recurrence.