What is a Steering Knuckle?

A steering knuckle is a crucial part of a vehicle's suspension and steering system. It connects the wheel hub assembly to the suspension and steering linkages, supporting the wheel's vertical load while allowing it to pivot for steering.

Essentially, when you turn the steering wheel, the steering knuckle enables the wheels to change direction by pivoting on upper and lower pivot points. It plays a vital role in vehicle handling, stability, and safety by directly affecting how the car responds to steering inputs. The component is found in both front and rear suspensions, especially in modern vehicles with independent suspension systems.

The steering knuckle is a critical component in your vehicle's suspension system that connects the wheel hub to the suspension components. It acts as the base onto which various steering and suspension parts are mounted, including:

#Tie rod ends

#Ball joints

#Struts or shock absorbers

#Brake components

Steering knuckles are typically made of cast iron or aluminum and facilitate the pivot point for wheel rotation, enabling steering control while maintaining vehicle stability.

Common Symptoms of a Bad Steering Knuckle

Abnormal Tire Wear

Uneven or irregular tire wear, particularly on one front tire, often heavier toward the inner or outer edge. This occurs because a damaged knuckle throws off wheel alignment.

Noise and Vibration

Unusual sounds (grinding, clicking, clunking) or vibrations felt through the steering wheel, especially when turning or going around corners.

Vehicle Pulling

The vehicle pulls to one side when driving straight, requiring constant steering correction. This happens when the knuckle changes the wheel's road contact angle.

Steering Difficulties

Steering wheel feels stiff, binds, or is difficult to turn. This indicates the knuckle may be restricting smooth movement of steering linkages.

Additional Signs to Watch For:

Steering wheel doesn't return to center after turning

Visible grease leaks around the knuckle area

Loose suspension components or frequent bolt loosening

Brake performance issues like vibration during braking

King Long Unveils Next-Generation Buses at Busworld 2025

King Long at Busworld 2025

A brand-new chapter begins!

King Long steps onto the global stage with confidence and passion — showcasing the power of Chinese smart manufacturing.

With technology and innovation, we connect with the world and shine together.

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What Does a Hydraulic Filter Do

What Is a Hydraulic Filter?

A hydraulic filter is a precision component installed in hydraulic circuits to remove solid particles and impurities from hydraulic oil. Contaminants can originate from internal wear (metallic particles), seal degradation, or external sources (dust, rust). Without filtration, pumps, valves, and actuators suffer premature wear and failure.

Common applications: construction equipment, agricultural machinery, forklifts, industrial hydraulic units.

Main Functions of a Hydraulic Filter

Remove contaminants: captures metallic particles, sludge, and dust.
Protect components: prevents abrasive wear on pumps and valves.
Maintain oil cleanliness: extends oil service life and reduces oxidation.
Ensure system reliability: stabilizes pressure and performance.

How Does a Hydraulic Filter Work?

Hydraulic oil flows through a filter media (paper, glass fiber, or wire mesh). The media traps particles while allowing clean oil to pass. Typical flow path:

Oil enters the filter housing carrying contaminants.
Oil passes through the filter media — particles are retained.
Clean oil exits and recirculates in the hydraulic system.

If the element clogs, many systems include a bypass valve to prevent excessive pressure rises. However, bypass flow is not a substitute for timely element replacement.

Tip: Monitor differential pressure or follow OEM change intervals to avoid bypass operation and downstream damage.

Common Types of Hydraulic Filters

Filters are placed in different locations of a hydraulic circuit — each location has a distinct purpose:

Suction Filters — before the pump, protect the pump from large debris.
Pressure Line Filters — in high-pressure circuits for fine filtration.
Return Line Filters — before oil returns to the reservoir to remove contaminants generated during operation.
Spin-On Filters — disposable elements commonly used in mobile equipment for easy maintenance.

Why Regular Hydraulic Filter Replacement Matters

Delaying replacement causes:

Reduced flow and inefficient system response.
Increased wear on pumps, valves and actuators.
Higher risk of unplanned downtime and repair costs.

Regular filter maintenance preserves equipment uptime and reduces long-term ownership costs.

How to Choose the Right Hydraulic Filter

When selecting a replacement, consider:

Cross reference: match equivalent part numbers (see cross reference examples below).
Micron rating: ensures required filtration level (smaller micron = finer filtration).
Physical dimensions: outer/inner diameter and length must match housing.
Operating pressure rating: ensure filter and media are rated for your system pressure.
Quality & supplier reliability: prefer verified OEM/OEM-equivalent manufacturers.

For more details on selecting filters by size and micron, see our Hydraulic Filter product page.

Hydraulic Filter Cross Reference Examples

The following are commonly requested cross references — CHINA EVERLASTING PARTS supplies OEM-equivalent elements for these part numbers:

Brand	Part Number (Example)
Baldwin	PT9302-MPG
Donaldson	P566689 / P170587
Hydac	0060D010BH / HC 2055960
Parker	PR3066 / PR3066Q
MP Filtri	MP9202
Rexroth	R928017119
Wix	D34B200SV / D82E10HV

If you need help locating an exact replacement, send us the part number — we can confirm cross references and MOQ for OEM orders.

Quick Checklist Before Ordering a Replacement

Confirm OEM part number or measure OD / ID / Length.
Decide required micron rating (e.g., 10µm, 25µm).
Check operating pressure and temperature specs.
Consider OEM vs aftermarket — we recommend OEM-equivalent quality for critical systems.

About CHINA EVERLASTING PARTS CO., LIMITED

CHINA EVERLASTING PARTS CO., LIMITED is a professional manufacturer of high-quality filters. Our main products include Air Filters, Oil Filters, Fuel Filters, Hydraulic Filters, Fuel Water Separators, Air Oil Separators and filter assemblies. We accept OEM & ODM orders and support global distribution.

Contact Us for OEM or bulk orders:

WhatsApp / Wechat: +86 18965520297 / +86 18144082725
Email: Sales@filters-king.com
Website: www.filters-king.com

Published by CHINA EVERLASTING PARTS CO., LIMITED. For technical support or cross-reference inquiries, please contact our sales team.

How to Choose the Right ISUZU Wrecker Tow Truck?

As specialized vehicles for traffic rescue, the choice of a ISUZU Wrecker Truck (commonly known as a wrecker tow truck) should be based on actual operational needs, balancing cost-effectiveness and practicality.

ISUZU Tow trucks can be categorized by structure as one-on-one flatbed wrecker truck, one-on-two flatbed wrecker, integrated wrecker truck, and rotary wrecker truck.

ISUZU integrated wrecker truck

Flatbed tow trucks are a common and economical option, capable of towing two vehicles simultaneously. However, they lack independent lifting capacity. For vehicles that have run off the road, assistance from another tow truck or crane is often required, which prolongs the rescue process. Furthermore, due to structural limitations, the support arms of flatbed tow trucks cannot fully descend to the ground when in a horizontal position. Instead, they must extend at a negative angle to lift the damaged vehicle. This method can damage the bumper of low-slung vehicles and potentially cause secondary injuries. In such cases, a tow truck may be a safer and more suitable alternative. Therefore, selecting the right tow truck requires matching the type and structure to the actual towing requirements to ensure efficiency and cost-effectiveness.

ISUZU rotary wrecker truck

To know more about our ISUZU wrecker tow truck, please check below weblink:

ISUZU Flatbed Tow Truck,ISUZU Wrecker Truck,ISUZU Flatbed Wrecker

How to Troubleshoot a ISUZU Garbage Truck Solenoid Valve Failure?

The solenoid valve is a critical component in ISUZU garbage trucks, controlling the power take-off (PTO), which directly affects the lifting system. A solenoid valve failure can significantly reduce the efficiency of garbage collection operations. The following is a practical guide to diagnosing and resolving common solenoid valve problems.

If the solenoid valve fails to close, possible causes include damaged seals in the main valve core or plunger; in these cases, the seals should be replaced. If the fluid temperature or viscosity is too high, consider replacing it with a model suitable for the conditions. Debris within the valve may clog the valve core or plunger; in this case, shut down the system and thoroughly clean the components. Worn or deformed springs should be replaced, and clogged orifices should be cleaned promptly. Furthermore, if the solenoid valve has reached the end of its service life due to high frequency operation, it should be completely replaced.

ISUZU 5CBM garbage truck

If the solenoid valve does not operate after power is applied, first check the power connections for loose contact and rewire or reconnect as needed. Verify that the power supply voltage is within the specified range and adjust as needed. Check the coil for desoldering or shorting and resolder or replace it. If the operating differential pressure is incorrect, adjust the valve or install a suitable replacement valve. Excessively high fluid temperatures may require switching to a proportional solenoid valve. If contaminants cause the valve core or core to stick, the system requires immediate shutdown, cleaning, and installation of a filter; any damaged seals must also be replaced. Finally, if the fluid viscosity is too high or the valve has reached the end of its life due to heavy use, the entire system may need to be replaced.

ISUZU ELF compactor truck

By systematically comparing fault symptoms with these guidelines, operators can accurately identify and resolve solenoid valve issues. Prompt and correct action helps maintain the operating efficiency of garbage trucks and extend their service life.

ISUZU 3TON garbage truck

Precautions for Operating a ISUZU High-Pressure Sewage Cleaning and Suction Truck

ISUZU High-pressure sewage cleaning and suction trucks have a wide range of uses, including cleaning municipal sewers, clearing pipe sediment, narrow ditches, and flushing walls and industrial drains. They can also be used for water sprinkling, water transport, road watering, and even emergency firefighting. To ensure safe and efficient operation, please observe the following precautions.

ISUZU 5CBM vacuum jet truck

Always keep the vacuum pump within its recommended operating speed range. Excessively high speeds can cause rotor overheating, while excessively low speeds can cause mechanical shock and premature wear. Adjust the hand throttle according to the pump type to achieve the optimal operating range. When unloading, operate only on level ground. Tilting or lifting a tank on a slope can cause component deformation, operational failure, and even rollover accidents. Before lifting a tank for unloading, open the tank door and loosen the locking bolts. Raise the rear door to the desired angle. Never attempt to lift the fuel tank with the rear door closed and fully loaded, as this creates a serious risk of rollover.

ISUZU 5CBM sewage tank truck

When engaging the oil or vacuum pump via the power take-off, ensure the engine is idling and the clutch pedal is fully depressed. Only gradually release the clutch after activating the power take-off. The vacuum and oil pumps must remain off during transport. Avoid inhaling objects larger than the hose diameter or handling waste oil and hazardous materials. When accessing a raised fuel tank for inspection or maintenance, always use support rods and safety blocks to prevent accidental collapse.

ISUZU 10CBM vacuum tank truck

When transporting wastewater, drive at a moderate and steady speed. Avoid sharp turns and sudden braking, as a liquid load raises the vehicle's center of gravity and increases instability. Always obey traffic rules and operate the vehicle in a safe and controlled manner.

ISUZU GIGA vacuum suction truck

To know more about our ISUZU High-pressure sewage cleaning and suction trucks, please check below website:

ISUZU Vacuum Suction Truck,ISUZU Sewer Vacuum Truck

Standalone and Dependent Refrigeration Units in ISUZU Refrigerated Trucks

ISUZU Refrigerated trucks typically consist of a chassis, a body, and a refrigeration unit, with the refrigeration unit playing a vital role in the vehicle's operation. Refrigeration units used in refrigerated transport are broadly categorized into two types: standalone and dependent. Choosing the right refrigeration unit based on your transport needs is crucial, as it directly impacts operating costs and efficiency. Understanding the definition, characteristics, and applicable applications of each type will help you make an informed choice.

Standalone refrigeration units are typically self-contained systems, but also available in split configurations mounted on the vehicle's frame. They contain a separate engine and generator, powering the refrigeration system independently of the truck's engine. This allows them to operate regardless of whether the vehicle is running. In contrast, dependent refrigeration units rely entirely on the truck's engine for power, lacking their own power source and unable to operate when the vehicle's engine is off.

The primary advantage of standalone refrigeration units is their operational stability and reliability—critical for temperature-sensitive cargo. They ensure continuous cooling even if the truck stalls or the engine fails, preventing cargo from spoiling. However, due to the need for an additional engine system, these units are more expensive and more complex to maintain. In contrast, dependent refrigeration units are more affordable, simpler in design, and easier to maintain. Their main disadvantage is their complete reliance on the truck engine; if the engine stops, so does cooling. This can lead to temperature fluctuations, especially with frequent door openings or engine failure, increasing the risk of cargo damage.

ISUZU 10ton refrigerator truck

Given these differences, despite their higher cost, dependent refrigeration units are more suitable for long-distance transport with larger vehicles (such as trucks and semi-trailers over 7 meters in length). Dependent units are more economical and are typically used in smaller vehicles under 7 meters in length. They are well-suited for shorter distances or urban deliveries, where engine operation is more stable and continuous cooling is less critical.

ISUZU 15ton refrigerator truck

To know more about our ISUZU refrigerator truck, please check below website:

ISUZU Reefer/Refrigerated Truck,ISUZU Box Refrigerated Truck For Sale

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Driving Green in Azerbaijan!

King Long has proudly delivered a new batch of CNG buses, bringing the King Long bus fleet in Baku to nearly 100 units and the total fleet across the country to almost 150 electric and CNG buses.

These clean energy buses are more than just transport — they help ease urban traffic congestion and support Azerbaijan’s ambitions for a greener future. As the host of COP29, Azerbaijan has committed to reducing emissions by 35% by 2030 and 40% by 2050, with green transport and energy transition as key priorities.

We are honored to play a role in this journey — contributing to sustainable mobility, supporting climate action goals, and helping make everyday travel cleaner and smarter for local communities.