361-4678 engine camshaft for engine spare part

Short Description:

CAT 361-4678 engine camshaft fits C9.3 electronic engine. As the core drive part of valve train, it controls intake and exhaust valve timing for E-series large excavators and cold planers.


Product Detail

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description

Forged from alloy steel with deep induction-hardened cam lobes, this camshaft balances structural toughness and wear resistance. For the C9.3 engine, it actuates the valve rocker assembly and works with electronic fuel system to improve gas exchange at medium and high RPM, which directly affects load response and emission performance. It matches 336E,340E excavators, PM825 cold planers and 966K wheel loaders, widely used in road rehabilitation and mining sites with heavy shock load, high temperature and dust.

Part No.: 361-4678
Name: Engine Camshaft
Application: CAT C9.3 engine; 336E/340E excavator, 966K wheel loader, PM825 cold planer
Material: Alloy steel, induction hardened cam lobe surface
Structure: Inline single camshaft

Product Advantages

Attributes:
• Ensures balanced intake and exhaust flow, contributing to smoother engine operation and reduced vibration
• Contributes to improved airflow, allowing the engine to generate more power

Applications:
An Engine Camshaft helps proper valve timing to ensure efficient combustion by allowing the right amount of air-fuel mixture into the cylinders and allowing exhaust gases to be expelled effectively.

FAQ 

Q: Can 361-4678 fit C9 engine directly?
A: No. C9 and C9.3 have different cylinder head structure and cam profile, valve timing does not match, interchange is not allowed.

Q: How many 361-4678 camshafts are required for one C9.3 engine?
A: C9.3 is inline engine, only one camshaft is equipped per engine.

Q: Can lightly scratched cam lobes be polished and reused?
A: Polishing is not recommended. It changes cam profile and reduces valve lift, leading to poor power and higher fuel consumption over time.

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