Kubota D950 Engine Core Component Specifications

The Kubota D950 Diesel Engine is heavily utilized in small equipment, notably Kubota KX41-2 Mini Excavators and older utility tractors. High-quality replacement bore components are essential for restoring power and efficiency during a diesel engine overhaul.

• Kubota D950 Piston: Crafted to OEM standards, identified by the crucial Part Number 15732-21112. The non-hyphenated search term is 1573221112.

• Kubota D950 Piston Ring Set: Ensures necessary compression and oil control for engine health, corresponding to the specific Part Number 15901-21050 (search term: 1590121050).

• We offer complete D950 Overhaul Kits that include the Thrust Washer and Crankshaft Main Bearing sets.

Rely on Honour Time Machinery Limited for reliable Kubota Engine Parts and superior support for your Mini Digger Service requirements.

Core Business: Component Supply Chain and Targeted Long-Tail Keywords

As a global leader in engine components, Honour Time Machinery Limited supplies parts and Engine Total Assembly for these top industry brands:

Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai.

Our expansive product line covers every major engine component required for a rebuild:

• Cylinder Liner (Precision bore integrity)

• Piston (1573221112)

• Piston Ring (1590121050)

• Crankshaft Main Bearing (Lower-end support)

• Connecting Rod Bearing (Load-bearing shells)

• Thrust Washer (Crankshaft axial alignment)

• Engine Overhaul Gasket Kit (Complete sealing solution)

• Diesel Pump (Fuel metering and pressure)

• Fuel Injector (Combustion delivery)

• Crankshaft (Engine rotational mass)

• Turbocharger (Power boosting)

• Water Pump (Engine cooling system)

• Oil Pump (Engine lubrication system)

• Cylinder Block (Main engine casting)

• Cylinder Head (Engine gas exchange)

• Connecting Rod (Piston-to-crank linkage)

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Construction Machinery Parts Glossary: Location and Example

Definitions for common engine and machine components, detailing their location and providing a specific equipment example:

1. Glow Plug: Screws into the Cylinder Head Pre-combustion Chamber. Kubota D950 Engine Glow Plug – Provides heat for cold starting in indirect injection diesels.

2. Final Drive Seal Kit: Found inside the Final Drive Planetary Gearbox. Komatsu PC75UU-2 Final Drive Duo-Cone Seal – Seals the gearbox oil against dirt and water ingress.

3. Intake Manifold Gasket: Seals the connection between the Cylinder Head and Intake Manifold. Caterpillar C4.4 Engine Intake Manifold Gasket – Prevents air leakage after the turbocharger.

4. Valve Lifter (Tappet): Sits on the Camshaft Lobe inside the Engine Block. Isuzu 4HK1 Engine Valve Lifter Assembly – Transfers the rotational motion of the camshaft into linear motion to operate the valve train.

5. Oil Pick-up Tube: Extends from the Oil Pump Inlet down into the Oil Sump. Yanmar 3TNV84 Engine Oil Pick-up Tube Screen – Ensures the oil pump draws clean oil from the lowest point of the pan.

6. Flywheel Bolt: Attaches the Flywheel to the Crankshaft Flange. Weichai WP6 Engine Flywheel Bolt Set – Critical fasteners for power transmission.

7. Fuel Filter Water Separator: Mounted in the Fuel Line between the Tank and Lift Pump. Cummins B6.7 Fuel Water Separator Filter Element – Removes water and large particles from the diesel fuel before injection.

8. Boom Cylinder Seal Kit: Found inside the Hydraulic Boom Cylinder. Caterpillar 308E Boom Cylinder Rod Seal Kit – Seals the piston and rod to maintain hydraulic pressure for lifting the boom.

9. Hydraulic Tank Return Filter: Located on the Return Line Inside the Hydraulic Tank. Komatsu PC200-8 Hydraulic Oil Return Filter – Cleans the hydraulic oil returning from the cylinders and motors.

10. Oil Pressure Regulator Valve: Located inside the Oil Pump or Engine Block. Isuzu 6BG1 Engine Oil Pressure Relief Valve Spring – Limits the maximum pressure of the oil pump to protect the lubrication system.

Expert Fault Diagnosis: Engine Low Oil Pressure

Fault: Yanmar Vio35 Mini Excavator (3TNV84 Engine) Alarm for Low Oil Pressure

Fault Detail:

A Yanmar Vio35 Mini Excavator with a 3TNV84 Diesel Engine triggers the low oil pressure warning light/alarm, particularly when the engine reaches operating temperature or when idling. The oil level is correct.

Solution/Treatment Plan:

1. Verify Pressure with Mechanical Gauge: First, confirm the low pressure reading by temporarily installing a calibrated Mechanical Oil Pressure Gauge at the engine port. If the reading is genuinely low (especially below the manufacturer's specification at idle), proceed to the next steps.

2. Inspect Oil Pump and Screen: A common failure point is the Oil Pump itself, or a blockage at the Oil Pick-up Screen in the sump. The screen can become clogged with debris (like old gasket material or sludge). Dropping the Oil Pan to clean the screen and inspect the Yanmar Oil Pump is necessary.

3. Check Bearing Clearance: Excessive wear in the Crankshaft Main Bearings or Connecting Rod Bearings creates larger gaps, allowing oil to escape too quickly and dropping pressure. If pump and screen checks are clear, engine disassembly to measure the Bearing Clearances and inspect the journals (where our featured Pistons reside) is required.

Contact Honour Time Machinery Limited: Your Global Source for Engine Parts

For high-quality engine components, including the robust Kubota D950 Piston 15732-21112 and precision Ring Set 15901-21050, connect with Honour Time Machinery Limited. We are your reliable Source Manufacturer, guaranteeing Factory Direct pricing and excellent support for all your Foreign Trade Export needs.

Global Supplier of Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, Weichai Parts and Assemblies.