
Automatic Transmission Clutch Plate 1878004832 For MAN Trucks And Buses
2.Part No.:878004832
3.Car make:MAN truck
4.Weight:9.412KG
High quality Sachs automatic clutch plate, part number 1878009556. Suitable for heavy-duty trucks and AMT transmissions. OE standard, durable, and reliable performance for European commercial vehicles or Heavy duty truck.
| Parameter | 430MM |
| Hub profile | 2" -10N |
| NO. OF TEETH &SPRING | 10/6 |
| Weight: | 9.4KG |
| Suitable vehicle | MAN |
Photoes for ATM clutch disc 1878009556

🔧 Structure of Triple-Damper Clutch Disc
A Triple-Damper Clutch Disc is specially designed to absorb higher torque and reduce vibration in commercial vehicles and heavy-duty machinery. Its structure includes the following components:
🧩 Main Components
Friction Linings
High-performance friction materials bonded on both sides of the disc
Designed to engage smoothly with the flywheel and pressure plate
Wear-resistant and heat-resistant
Core Plate (Steel Disc Base)
The rigid steel plate that provides structural support
Precisely engineered for strength and flatness
Multi-Stage Damper Springs (Triple-Damper System)
Primary Damper Springs: Handle low-speed torque fluctuations
Secondary Damper Springs: Absorb mid-level torque impulses
Tertiary Damper Springs: Manage high torque load and shock
This layered damper design significantly reduces drivetrain vibrations and enhances driving comfort
Spline Hub with Floating Function
Precision-machined inner spline matches transmission input shaft
Often designed with a floating or flexible interface to reduce wear and noise
Cushion Plate or Wave Spring (Optional)
Allows gradual engagement of the friction linings
Softens initial contact with the flywheel for smoother operation
Rivets & Damping Plates
Securely connect friction linings to the steel core
Additional damping plates may be included for high-load applications
✅ Key Advantages
Superior shock absorption
Enhanced durability under heavy torque
Smooth engagement and gear shifting
Extended service life, especially in trucks, buses, and agricultural machinery
Clutch plate 1878009556 structure diagram


Clutch disc 1878009556 is used for clutch kits as follow:
| 1 | Clutch Kit | 3400 122 201 |
| 2 | Clutch Kit | 3400 127 401 |
| 3 | Clutch Kit | 3400 700 327 |
| 4 | Clutch Kit | 3400 700 330 |
| 5 | Clutch Kit | 3400 700 332 |
| 6 | Clutch Kit | 3400 700 333 |
| 7 | Clutch Kit | 3400 700 334 |
| 8 | Clutch Kit | 3400 700 379 |
| 9 | Clutch Kit | 3400 700 399 |
| 10 | Clutch Kit | 3400 700 403 |
| 11 | Clutch Kit | 3400 700 450 |
| 12 | Clutch Kit | 3400 700 485 |
| 13 | Clutch Kit | 3400 700 493 |
| 14 | Clutch Kit | 3400 700 495 |
| 15 | Clutch Kit XTend | 3400 700 508 |
| 16 | Clutch Kit | 3400 700 688 |
Our factory Equipment & samples


MACHINE FOR CLUTCH PLATE 
SAMPLES FOR CLUTCH DISC
FAQ
Q: What is the difference between good quality clutch plate and bad quality clutch plate?
A:
Here's a breakdown of the key differences between a good quality clutch plate and a bad quality clutch plate:
✅ Good Quality Clutch Plate:
Material Quality:
Made with high-grade friction material (ceramic, kevlar, or organic).
Durable metal backing and springs to withstand pressure and heat.
Precision Engineering:
Accurately machined components ensure proper fitment and balance.
Minimal vibration or noise during operation.
Heat Resistance:
Maintains performance under high-temperature conditions.
Reduces risk of warping or early wear.
Friction Stability:
Consistent engagement and disengagement.
Prevents slippage and ensures smooth gear shifts.
Longevity:
Designed for long service life and high mileage.
Resists wear even in heavy-duty or commercial applications.
Brand Assurance:
Comes from reputable manufacturers (e.g., Sachs, Valeo, LUK).
Usually tested and certified to meet OEM standards.
❌ Bad Quality Clutch Plate:
Low-Grade Materials:
Made with cheap friction linings that wear quickly.
Springs and backing plates may be poorly heat-treated.
Poor Craftsmanship:
May have uneven surfaces or misaligned components.
Causes juddering, noise, and uneven wear.
Overheating Problems:
Cannot handle high temperatures; easily scorched or glazed.
Reduces friction efficiency and shortens lifespan.
Slippage & Shuddering:
Inconsistent engagement.
Harder to drive smoothly, especially under load.
Short Service Life:
Fails early, requiring frequent replacements.
Can damage other transmission components over time.
Unbranded or Counterfeit:
No guarantee of quality or reliability.
Risk of failure and vehicle downtime.
Q: What is a Clutch Plate and What Does It Do?
A: A clutch plate is a crucial component of a vehicle's manual transmission system. It is mounted between the engine flywheel and the pressure plate, and it plays a key role in engaging and disengaging power from the engine to the transmission.
🔧 What It Does: When the clutch is engaged, the clutch plate is pressed tightly between the flywheel and the pressure plate. This allows engine power to flow smoothly to the gearbox and wheels, moving the vehicle. When the clutch is disengaged (pedal pressed), the clutch plate is released, interrupting the power flow. This allows the driver to change gears or stop the vehicle without stalling the engine.
✅ Key Functions: Transfers power from the engine to the transmission Allows smooth gear changes Helps start and stop the vehicle without damaging the engine Absorbs vibration and protects drivetrain components
Q: How Do I Know If My Clutch Plate Is Worn Out?
A: A worn-out clutch plate shows several noticeable symptoms that affect how your vehicle drives. Here are the most common signs:
⚠️ Common Signs of a Worn Clutch Plate:
-
Slipping Clutch
-
Engine revs increase, but the vehicle doesn't accelerate properly
-
Especially noticeable when going uphill or under load
-
-
Hard or Difficult Gear Shifting
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Trouble engaging or changing gears smoothly
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Grinding noise when shifting
-
-
Clutch Pedal Feels Spongy or Too Loose
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Pedal may feel soft or sink to the floor
-
Poor response when pressing the clutch
-
-
Burning Smell
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A sharp, burning odor from under the hood (caused by friction)
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Often noticed in traffic or after aggressive driving
-
-
Vibration or Juddering When Releasing the Clutch
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Shaking or shuddering when starting from a stop
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Caused by uneven wear or damaged friction material
-
-
Poor Acceleration
-
Delay between engine revving and actual vehicle movement
-
Loss of power transfer from engine to wheels
-
🛠️ What to Do:
If you notice any of these symptoms, it's best to have your clutch system inspected by a mechanic. Driving too long with a worn clutch can damage the pressure plate, flywheel, and even the transmission.
FAQ
Q: How Long Does a Clutch Plate Usually Last?
A: The lifespan of a clutch plate depends on various factors like driving style, vehicle type, and road conditions.
On average:
⏳ Typical Lifespan:
50,000 to 100,000 kilometers (about 30,000 to 60,000 miles) for most vehicles
In commercial or heavy-duty vehicles, it may wear out sooner
In light use with good driving habits, it can last even longer
🚗 Factors That Affect Clutch Plate Life:
1.Driving Habits
Riding the clutch, aggressive starts, or frequent stop-and-go driving reduces lifespan
2.Load & Usage
Heavy loads, towing, or uphill driving puts more strain on the clutch
3.Quality of the Clutch Plate
High-quality brands (like Sachs, LUK, Valeo) generally last longer
4.Traffic Conditions
City traffic causes more wear due to frequent clutch use
5.Proper Installation
A poorly installed clutch can fail prematurely
✅ Tip:
To maximize clutch life, avoid resting your foot on the clutch pedal, engage smoothly, and use engine braking when possible.
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