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Type :
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Clutch plate
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Specification :
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Pulley :
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Brand :
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nuojin
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Number :
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829067 20366222, 20577448
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Quality :
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Remanufacture
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Delivery time :
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10 day
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The installation of a Volvo clutch friction disc must follow the core principles of correct orientation, precise centering, diagonal and step-by-step bolt tightening, proper lubrication, and post-installation inspection to ensure smooth engagement, complete disengagement, and freedom from jitter or slippage. Below are the general installation steps and key specifications; refer to the vehicle’s service manual for model-specific details.
Park the vehicle on a level surface, engage the parking brake, shift to neutral, and disconnect the negative battery terminal to prevent accidental engine startup.
Securely support the vehicle with a lift or reliable jack; place an oil pan under the transmission to collect drained transmission fluid.
Friction disc: Ensure the friction surface is free of oil contamination, rivets are tight, rivet sinkage is ≥0.3mm, and the spline fits smoothly on the input shaft without binding.
Pressure plate: Verify the surface is flat (no burning, cracks, or warpage), the diaphragm spring has uniform elasticity, and height variation is ≤0.5mm.
Flywheel: Remove oil, rust, and debris from the surface with a clean cloth to ensure full contact with the pressure plate; inspect the flywheel ring gear and pilot bearing, replacing them if necessary.
Release bearing: Confirm it rotates freely without noise or binding; apply grease to the inner bore.
Confirm orientation: The torsion damper side of the friction disc faces the pressure plate (usually marked “TO GEARBOX”—verify before installation). For example, on Volvo C30 models, the side labeled “gearbox side” must face the transmission.
Spline lubrication: Apply a thin, even layer of Volvo-specified grease to the friction disc spline hub and transmission input shaft splines (avoid over-greasing to prevent slippage); also lubricate the release bearing inner surface and release fork contact points.
Center alignment: Insert the alignment tool into the flywheel pilot bearing, then slide the friction disc onto the tool to ensure concentricity with the flywheel and input shaft, preventing misalignment during installation.
Align marks: Match the locating pins and assembly marks on the clutch cover and flywheel (mark them manually if no factory marks exist) to ensure balance and correct positioning.
Bolt pre-tightening: Install the pressure plate mounting bolts by hand until snug to avoid uneven initial loading.
Diagonal step-by-step tightening: Use a torque wrench to tighten the bolts in a diagonal pattern in 2–3 stages to the model-specific torque specification (typically 27N·m—always refer to the service manual) to prevent pressure plate deformation.
Mount the release bearing to the release fork, ensuring it slides freely without binding; lubricate the contact point between the fork and bearing.
Install the release fork assembly, ensuring proper contact between the fork and bearing, correct installation of the return spring, and smooth movement.
Clean the transmission input shaft splines and apply a small amount of grease; slowly slide the transmission onto the engine, ensuring the input shaft fully engages the friction disc spline hub without binding.
Install the transmission mounting bolts, tightening them in a diagonal pattern in stages to the specified torque; reconnect the driveshaft, shift linkage, clutch hydraulic line (if applicable), and other components.
Hydraulic clutch: Adjust pedal free travel via the master cylinder or slave cylinder pushrod (standard range: 15–25mm—refer to the service manual for model-specific values).
Mechanical clutch: Adjust the cable length to maintain the specified clearance between the release bearing and diaphragm spring, ensuring smooth pedal return.
Startup test: Start the engine and test the clutch pedal at idle: Ensure complete disengagement when pressed and smooth engagement when released, with no noise, jitter, or slippage.
Gear shift test: Shift through all gears to verify smooth operation without grinding or binding.
Road test: Test acceleration, gear shifts, and hill climbing at low speeds to confirm stable clutch engagement with no abnormalities.
To ensure stable operation and a full service life of the Volvo clutch system after installation, the following precautions must be strictly observed:
The torsion damper side (spring side / side marked “gearbox side”) of the friction disc must face the pressure plate/transmission end; reverse installation is strictly prohibited.
For Volvo C30/S40/V50 models: The side of the friction disc printed with “gearbox side” must face the transmission directly;
For models such as XC90/XC60: The damper spring side faces the pressure plate. If there is no mark, it can be judged by the spline hub step—the step side is close to the flywheel.
Incorrect orientation will cause severe jitter during clutch engagement, incomplete disengagement, rapid burnout of the friction disc, damage to the pressure plate diaphragm spring in a short period of time, and even wear of the transmission input shaft splines.
A Volvo-specific clutch alignment tool (such as the special tool for MPS6 transmission) or a high-precision custom-fit tool must be used; manual centering based on experience is prohibited.
Fully insert the alignment tool into the flywheel pilot bearing, ensure that the friction disc spline is completely coaxial with the tool and the transmission input shaft spline, and that the friction disc end face is parallel to the flywheel end face before installing the pressure plate.
Centering deviation will make it impossible to assemble the transmission smoothly, or cause clutch abnormal noise, jitter, and early spline meshing failure during operation. In severe cases, it will lead to uneven wear and scrapping of the friction disc.
References：
This guide is a practical compilation refined based on the Volvo Official Service Manual as the core reference, supplemented by third-party repair documents and forum resources. Specific source details are as follows:
It provides key technical parameters and operational specifications, including:
Friction disc rivet sinkage ≥ 0.3mm
Diaphragm spring height variation ≤ 0.5mm
Dedicated clutch alignment tool
Genuine Volvo grease (e.g., Volvo 11611246-2)
Diagonal, step-by-step tightening of pressure plate bolts (typical torque: 27±3N·m for standard models; 30–35N·m for XC60/XC90)
Standard clutch pedal free travel: 15–20mm
For model-specific torque values and procedures (e.g., C30/S40/V50, XC60/XC90, hybrid models), refer to the corresponding vehicle service manual.
This text is a systematically integrated general technical summary and does not directly quote a single source. It takes the official manual as the core and verifies details with third-party documents to ensure accuracy and practicality.
Installation details vary across different models (e.g., C30/S40/V50, XC60/XC90, hybrid models, DCT/MPS6 dual-clutch models). For actual operations, always refer to the official service manual corresponding to the specific vehicle model.
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