11704999 BACK-UP RING FOR V O L V O CONSTRUCTION EQUIPMENT

1. Quick Details of  seal 11704999 :

2. 11704999  parts on group :

3. 11704999 picture:

4. Service ring parts no. :

 
5. FAQ

Q: What's this rubber ? What is its name and function?

A: This is a very interesting question.The rubber you mentioned inside the Damper Assembly play a critical role. They are commonly referred to as rubber bushings, bump stops, or dust boot/buffer sleeves.

    the functions  are as follows:

• Core Function: Cushioning and Limit-Stopping
• Prevents Metal-to-Metal Impact: When the damper is compressed to its limit (e.g., when a vehicle hits a large bump or pothole), the internal piston can slam into the bottom of the damper tube. This rubber cylinder acts as a "soft cushion," absorbing the final impact energy to avoid a hard collision. This protects the damper's internal precision components (such as the piston rod and oil seal) from damage.
• Reduces Noise: Without this rubber buffer, the metal-on-metal impact at the limit position would create a loud "clunking" sound. The rubber component effectively eliminates this noise.
• Dust and Contaminant Protection: In many designs, this cylinder is hollow and encases the piston rod, extending and compressing like an "accordion cover." Its primary role is to prevent dust, mud, road grime, water, and road salt from entering the damper's interior. If contaminants get inside, they can quickly wear down the oil seal and piston rod surface, leading to fluid leaks, performance degradation, and eventual damper failure.
• Retains Grease: For components requiring additional lubrication, it can also help keep grease in the intended area.

Q: Is a transmission repair kit in the grader important?
A:  Absolutely, a transmission repair kit is extremely important for a grader, or any piece of heavy equipment.
    Let me tell you why:

• Minimizing Downtime: Graders are essential to construction and road-building projects. A transmission failure can halt an entire project. Having a repair kit allows for a quicker repair, minimizing the unexpected downtime that can ruin project timelines and cost a significant amount of money.
• Longevity and Safety: A properly maintained and repaired transmission extends the overall lifespan of the grader. A malfunctioning transmission can also affect the safe operation of the machine, making timely repair a safety necessity.
• Maintaining Performance: The transmission is the "heart" of the drivetrain; it ensures engine power is delivered to the wheels effectively and efficiently. Worn parts inside the transmission can lead to problems like slow engagement, overheating, or loss of drive. Replacing these worn parts with a kit restores the machine's optimal performance.

Q:The material of the ring seal is a mixture of PTFE and fiberglass. What are its advantages?
A: the PTFE and fiberglass mixture creates a synergistic material that is far more capable than either component alone, offering a unique combination of strength, durability, and resistance to extreme environments.
I can explain it to you briefly in a few points, and you will understand why the prices of products of the same size vary so much.

• Combined Advantage: It has the advantages of both materials.The surface is extremely easy to clean, prevents material buildup, and allows for the easy release of substances. This is crucial for applications like food processing belts, release sheets, and architectural membranes where dirt and snow need to slide off.
• This material can withstand high temperatures and operate in lower environments, greatly improving the working life of the machine.

 
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