3TNV70 Crankshaft Pulley for Yanmar Engine Parts – Excavator, Truck, Forklift, Bulldozer, Bus

Product Details

Product Overview

This is a high-quality replacement Crankshaft Pulley, specifically designed for the Yanmar 3TNV70 diesel engine. As a critical component in the engine’s front-end accessory drive (FEAD) system, this pulley ensures proper belt tension and drives essential components like the alternator, water pump, and air conditioning compressor.

Manufactured to OEM specifications, this part guarantees a precise fit and reliable performance for a wide range of heavy equipment. It is a direct replacement for the original Yanmar part and is commonly used in various industrial applications, including excavators, trucks, forklifts, bulldozers, buses, and loaders.

This listing is for a single Crankshaft Pulley for the Yanmar 3TNV70 engine. Please verify your engine model and part dimensions to ensure compatibility before purchase.

Key Features & Benefits

• Precision Fit: Manufactured to exact OEM size specifications for the Yanmar 3TNV70 engine, ensuring a seamless installation and proper alignment with the serpentine belt system.
• Durable Construction: Built from high-strength materials designed to withstand the high torsional loads and continuous vibration of diesel engine operation, extending service life.
• Enhanced Engine Performance: A balanced and correctly machined pulley reduces belt slippage and vibration, leading to more efficient power transfer and smoother engine operation.
• Direct Replacement: Designed as a direct bolt-on replacement for the original Yanmar part, minimizing downtime and simplifying the repair process for mechanics and fleet operators.
• Reliable Supply: Sourced from a trusted manufacturer with rigorous quality control, providing a cost-effective alternative without compromising on performance or reliability.

Technical Specifications

OEM Cross-Reference

This Crankshaft Pulley is designed to directly replace the original Yanmar part number. While the specific OEM part number for the 3TNV70 crankshaft pulley may vary slightly by application, this part is manufactured to match the original specifications. Please cross-reference with the following:

• Yanmar Original: 119670-35110 (Common reference for 3TNV70 series)
• Alternate Reference: 119670-35111 (Superseded part number)

Note: We recommend comparing the physical dimensions (diameter, number of grooves, and center bore) with your original part to confirm fitment.

Compatibility

• Engine Models: Yanmar 3TNV70, 3TNV70-A, 3TNV70-N
• Vehicle & Equipment Applications (commonly used for):
  • Excavators (e.g., Yanmar Vio series, Kubota KX series)
  • Forklifts (e.g., Toyota, Nissan, TCM)
  • Compact Track Loaders & Skid Steer Loaders
  • Agricultural Tractors
  • Industrial Generators & Pumps
  • Road Construction Equipment (Bulldozers, Rollers)
  • Light Trucks & Buses (with similar Yanmar engine installations)

This list is not exhaustive. Always verify the specific engine model of your equipment.

Global Supply & Distribution

We are a dedicated supplier of high-quality diesel engine parts with a robust global distribution network. Our products are shipped to major industrial centers worldwide, including:

• North America: Los Angeles, Houston, Chicago, Toronto
• Europe: Rotterdam, Hamburg, Antwerp, London
• Asia-Pacific: Singapore, Shanghai, Sydney, Tokyo
• Middle East & Africa: Dubai, Jeddah, Lagos
• South America: Santos, Buenos Aires, Valparaiso

We offer fast and reliable shipping via sea, air, and express courier (DHL, FedEx, UPS). Our experienced export team handles all international trade documentation and customs clearance requirements to ensure a smooth delivery experience for B2B buyers.

Quality Assurance

• Manufacturing Standards: Produced in ISO 9001 certified facilities, ensuring consistent quality and dimensional accuracy.
• Material Quality: Made from high-grade ductile iron or steel, heat-treated for maximum strength and wear resistance.
• Testing: Each batch undergoes rigorous inspection including dimensional checks, hardness testing, and dynamic balancing to prevent vibration issues.
• Warranty: We offer a 6-month warranty against manufacturing defects in materials and workmanship.
• Inspection Support: Video outgoing inspection and machinery test reports are available upon request to verify quality before shipment.

FAQ

Q1: How do I confirm this crankshaft pulley will fit my Yanmar 3TNV70 engine?

First, verify your engine’s model number is exactly “3TNV70”. Then, inspect your original pulley. Count the number of grooves for the serpentine belt (typically 1 or 2). Measure the outer diameter of the old pulley (usually around 130-150mm) and the inner bore size (usually around 25-30mm). Compare these measurements to the specifications provided in the product images or listing. If you are unsure, please contact us with a photo of your old part and the engine serial number for confirmation.

Q2: What are the signs of a failing crankshaft pulley?

Common symptoms include: 1) A noticeable vibration from the front of the engine, especially at idle. 2) A squealing or chirping noise from the belt area, indicating misalignment or a worn pulley surface. 3) Visible wear, cracking, or separation of the rubber damper (if present) on the pulley hub. 4) Belt misalignment or frequent belt failures. If you experience any of these, inspect the pulley immediately to prevent belt failure or damage to other components like the alternator or water pump.

Q3: Can I install this crankshaft pulley myself, or should I hire a professional?

Replacing a crankshaft pulley is an intermediate-level mechanical task. It requires specific tools, including a harmonic balancer puller/installer kit and a torque wrench to tighten the center bolt to the manufacturer’s specification (often very high torque, e.g., 150-250 ft-lbs). Incorrect installation can damage the pulley, the crankshaft, or the keyway. If you do not have the proper tools and experience, we strongly recommend having a qualified diesel mechanic perform the installation to ensure safety and proper engine function.