🔑 Key Parts Terminology (Volvo EC210B/EC240B Focus)

1. Hydraulic Return Filter Element (VOE14509379): Located in the hydraulic tank, it cleans the oil returning from the system to the reservoir. Essential for preventing contamination and protecting the **Volvo EC210B Hydraulic Pump**. *EN: Volvo EC210B Hydraulic Return Filter; CN: 沃尔沃 EC210B 液压回油滤芯; RU: Гидравлический обратный фильтр Volvo EC210B.*

2. Sprocket (VOE14532401): A toothed wheel that engages the track chain, providing drive power. Installed at the final drive of the undercarriage. Example: **Volvo EC240B Sprocket**. *EN: Volvo EC240B Sprocket; CN: 沃尔沃 EC240B 链轮; RU: Звездочка Volvo EC240B.*

3. Pilot Filter Element (SA1030-61460): Used in the pilot line of the hydraulic system to ensure clean oil for the low-pressure pilot control circuit. Crucial for smooth joystick operation. Example: **Volvo EC210B Pilot Filter Element**. *EN: Volvo EC210B Pilot Filter Element; CN: 沃尔沃 EC210B 导向滤芯; RU: Пилотный фильтрующий элемент Volvo EC210B.*

4. Track Roller (VOE14527314): Undercarriage part that supports the weight of the machine and guides the track chain. Found along the bottom of the track frame. Example: **Volvo EC240B Track Roller**. *EN: Volvo EC240B Track Roller; CN: 沃尔沃 EC240B 滚轮; RU: Опорный каток Volvo EC240B.*

5. Fuel Filter (VOE11711074): Filters contaminants from the fuel before it reaches the injection system, protecting sensitive engine components. Installed between the fuel tank and the fuel pump. Example: **Volvo EC210B Fuel Filter**. *EN: Volvo EC210B Fuel Filter; CN: 沃尔沃 EC210B 燃油滤清器; RU: Топливный фильтр Volvo EC210B.*

6. O-ring (SA9511-22190): A mechanical gasket in the shape of a torus, used to seal joints in fluid systems (engine or hydraulic) to prevent leaks. Found in filter housings or connection points. Example: **Volvo EC240B Hydraulic O-ring**. *EN: Volvo EC240B Hydraulic O-ring; CN: 沃尔沃 EC240B 液压O形圈; RU: Уплотнительное кольцо Volvo EC240B.*

7. Adapter (VOE14522962): The component welded to the bucket that the removable tooth point attaches to, part of the Ground Engaging Tools. Example: **Volvo EC210B Tooth Adapter**. *EN: Volvo EC210B Tooth Adapter; CN: 沃尔沃 EC210B 齿的配接器; RU: Адаптер зуба ковша Volvo EC210B.*

8. V-Belt (VOE14515565): A rubber belt used to transmit power from the engine's crankshaft to accessories like the alternator or fan. Located on the engine front. Example: **Volvo EC240B Engine V-Belt**. *EN: Volvo EC240B Engine V-Belt; CN: 沃尔沃 EC240B 发动机V-皮带; RU: Клиновой ремень двигателя Volvo EC240B.*

9. Wiper Motor (SA1123-00160): An electric motor that drives the windshield wiper mechanism. Installed inside the cabin roof or dashboard. Example: **Volvo EC210B Wiper Motor**. *EN: Volvo EC210B Wiper Motor; CN: 沃尔沃 EC210B 刮水器马达; RU: Мотор стеклоочистителя Volvo EC210B.*

10. Slow Blow Fuse (SA9879-10400): A type of fuse designed to allow a current surge for a short time before blowing, often used in circuits with motors or transformers. Located in the main fuse box. Example: **Volvo EC240B Slow Blow Fuse**. *EN: Volvo EC240B Slow Blow Fuse; CN: 沃尔沃 EC240B 慢熔保险丝; RU: Медленноплавкий предохранитель Volvo EC240B.*

💡 Maintenance Quick Tips (Searchable Q&A)

Q: How often should I replace my excavator's hydraulic return filter (VOE14509379)?
A: It's generally recommended to change the **Hydraulic Return Filter (VOE14509379)** every 1000 hours, or as specified in your **Volvo EC210B** maintenance manual, to ensure optimal **hydraulic system** cleanliness and prevent premature wear of high-value components like the main pump and cylinders.

Q: Why does my heavy truck's engine V-belt (VOE14515565) keep squealing, and what should I check?
A: A squealing **V-belt (VOE14515565)** in your **Heavy Truck** or **Volvo EC240B** often indicates improper tension (too loose) or wear. Check the belt for cracks, glazing, and proper alignment of the pulleys. Adjust the tensioner or replace the belt if damaged.

Q: What is the main function of the coolant filter (VOE20532237) in my engine?
A: The **Coolant Filter (VOE20532237)**'s main function is to remove debris and sediment from the engine's cooling system and, more critically, to release **Supplemental Coolant Additives (SCAs)** to prevent corrosion, scale, and pitting, especially in the liners of a **construction machinery** engine.

⚠️ Excavator Troubleshooting Guide: Volvo EC240B Hydraulic Pump Noise

Issue: A **Volvo EC240B** excavator experiences excessive noise and jerky operation from the main hydraulic pump (e.g., when swinging or booming up). The **Drain Filter Element VOE14524170** and **Breather Filter VOE14500233** were recently replaced.

Probable Cause: Hydraulic pump **cavitation** due to a suction side problem, often caused by a blocked suction strainer (**Screen/Mesh VOE14531866**) or air ingestion.

Solution:

1. Immediately stop the machine to prevent severe pump damage.
2. Check the hydraulic fluid level—low fluid can introduce air.
3. Inspect and clean or replace the **Hydraulic Suction Screen/Mesh (VOE14531866)** in the reservoir. Even small debris can starve the pump.
4. Check all suction line fittings and hoses leading to the pump for leaks that might be sucking in air. Tighten the **O-rings (SA9511-22190)** on filter housings.
5. Bleed the hydraulic system as per the manual to remove any trapped air. If noise persists, the pump may require internal inspection or replacement.