Your Trusted Partner for Komatsu Engine Parts

Welcome to Honour Time Machinery Limited, your premier global partner for high-performance diesel engine assemblies and spare parts. We specialize in providing top-tier components for the Komatsu S4/6D105-5 engine, ensuring your machinery operates at peak efficiency. Our commitment to quality and reliability makes us a leader in the industry.

Beyond Komatsu, our extensive inventory covers major brands, including Cummins, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Trust Honour Time for all your heavy-duty engine needs.

Komatsu S4/6D105-5 Featured Parts

We are proud to offer high-quality replacement parts for the Komatsu S4/6D105-5 engine series. Below are our featured components. Part numbers are highlighted for your convenience.

Our Comprehensive Product Range

At Honour Time Machinery Limited, our business focus is on providing a complete solution for engine maintenance and overhaul. Our main products include, but are not limited to:

• Cylinder Liner

• Piston

• Piston Ring

• Main Bearing (Crankshaft Bearing)

• Connecting Rod Bearing (Conrod Bearing)

• Thrust Washer / Thrust Plate

• Overhaul Gasket Kit (Full Gasket Set)

• Diesel Pump (Fuel Injection Pump)

• Injector (Fuel Injector)

• Crankshaft

• Turbocharger

• Water Pump

• Oil Pump

• Cylinder Block

• Cylinder Head

• Connecting Rod

Detailed Specifications (S4/6D105-5 Series)

Technical specifications for the corresponding parts. Please verify these details with our sales team to ensure a perfect match for your engine.

Find Us for All Your Engine Needs

We service a global clientele looking for specific, high-quality engine solutions. Our expertise includes:

• Heavy duty engine parts supplier

• Diesel engine piston kit price

• Komatsu S6D105 overhaul kit

• Caterpillar C9 injector replacement

• Genuine Cummins 6BT parts online

• Isuzu 6HK1 diesel engine water pump

• Yanmar 4TNV98 aftermarket parts

• Kubota V2203 engine rebuild kit

• Weichai WD615 engine parts supplier

• Excavator engine parts factory

• Bulldozer engine components

• Marine diesel engine spare parts

• Aftermarket cylinder head for Caterpillar

• Komatsu PC200-8 engine parts

• Caterpillar 3306 engine parts

• Cummins ISX engine main bearings

• Factory direct engine cylinder liners

• Connecting rod for Isuzu trucks

• Wholesale diesel engine oil pump

• Turbocharger for Weichai engine

Know Your Engine Parts

Understanding the function of each component is key to proper maintenance. Here are explanations for some of the parts we sell:

1. Caterpillar 3406E Turbocharger: Installed on the engine's exhaust manifold. It uses exhaust gases to spin a turbine, which forces more air into the cylinders, increasing engine power and efficiency. Used on CAT heavy-duty trucks and equipment.

2. Komatsu PC200-8 Water Pump: A key part of the cooling system, mounted to the front of the engine block. It circulates coolant through the engine, radiator, and hoses to prevent overheating in excavators like the PC200-8.

3. Cummins 6BT5.9 Crankshaft: The "backbone" of the engine, located in the lower part of the cylinder block. It converts the up-and-down motion (reciprocating) of the pistons into rotational motion.

4. Isuzu 6HK1 Injector: Mounted in the cylinder head with its tip in the combustion chamber. It sprays a fine mist of diesel fuel into the cylinder at high pressure for combustion. Common in Isuzu F-Series trucks.

5. Yanmar 4TNV98 Cylinder Head: Sits on top of the cylinder block, sealing the combustion chamber. It houses the valves, injectors (or spark plugs), and camshafts. Critical for engines in compact excavators.

6. Kubota V2203 Oil Pump: Located inside the engine's oil pan. It pumps engine oil from the pan to all moving parts, such as bearings and pistons, to lubricate and cool them.

7. Weichai WD615 Overhaul Gasket Kit: This is not a single part, but a complete set of seals and gaskets (like the head gasket, valve seals, and O-rings) needed to completely rebuild a Weichai WD615 engine.

8. Komatsu S6D102 Piston Ring: These rings are fitted into grooves on the piston. They seal the combustion chamber, transfer heat from the piston to the cylinder wall, and control oil consumption.

9. Caterpillar C15 Connecting Rod: This component connects the piston to the crankshaft. It transfers the force of combustion from the piston down to the crankshaft, causing it to rotate.

10. Cummins ISX Main Bearing: These are "plain" bearings (sleeves) that support the rotating crankshaft, holding it in place within the engine block. They are critical for handling the engine's load.

Troubleshooting Spotlight: Engine Overheating

Equipment Example: Caterpillar 3306 Engine in a D6 Bulldozer

Fault: The engine temperature gauge consistently shows overheating, especially under load.

Common Causes & Solutions:

• 1. Low Coolant Level: The most common cause.
  Solution: Check for leaks in hoses, the radiator, or the water pump. A faulty head gasket (part of an overhaul gasket kit) could also cause coolant loss. Refill the system and bleed any trapped air.

• 2. Faulty Thermostat: The thermostat may be stuck closed, preventing coolant from flowing to the radiator.
  Solution: Remove the thermostat and test it in hot water to see if it opens. If not, replace it.

• 3. Slipping Fan Belt or Faulty Fan: The fan belt may be loose, or the fan clutch (if equipped) may be failing, reducing airflow through the radiator.
  Solution: Tighten or replace the fan belt. Inspect the fan clutch for proper operation.

• 4. Clogged Radiator: External fins may be clogged with dirt and debris, or internal passages may be blocked by rust and scale.
  Solution: Clean the radiator fins externally with compressed air or water. If internally clogged, the system may need a professional flush.