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Type :
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clutch release bearing
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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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Euro-6 7424604883
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Quality :
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new
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Delivery time :
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30 days
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The core steps for installing the clutch release bearing of Renault vehicles are: first, safely remove the gearbox, then clean and lubricate the guide components, install the bearing and fork in the correct orientation, perform standardized fastening, air bleeding/adjustment, and finally conduct verification tests. The entire process must comply with torque and lubrication specifications, and is applicable to mainstream Renault models such as Clio, Scénic, Sandero and Trafic. Below are the standardized procedures and key points.
Vehicle Preparation and Power Disconnection
Disconnect the negative terminal of the battery. Lift the vehicle and support it securely, ensuring a load-bearing bracket is placed under the gearbox.
Tools and Accessories
Prepare socket/box-end wrenches, torque wrench, gearbox support bracket, guide shaft centering tool, new release bearing (with dust cover), fork bushing/ball joint, specified lubricating grease (e.g., MOLYKOTE BR2), lock washers, and clutch centering mandrel.
Data and Component Verification
Refer to the Renault Service Manual to confirm the bearing model, fork bolt torque (typically 21 N·m), lubrication points, and air bleeding/adjustment specifications. Check that the bearing rotates smoothly without jamming, the dust cover is free from damage, and the fork has no cracks or deformation.
Inspection of Old Components and Mounting Surfaces
After removing the gearbox, clean the input shaft splines, release fork pivot shaft and guide sleeve. Check that the diaphragm spring fingers are of uniform height and free from wear; replace the pressure plate/driven disc if necessary.
Gearbox Removal
Disconnect the clutch hydraulic line/cable and wiring harness in accordance with the manual instructions. Support the engine and lift out the gearbox. Mark the relative position of the pressure plate and flywheel for reinstallation reference.
Release Bearing and Fork Removal
Slide the bearing off the input shaft, loosen the fork pivot bolts, and remove the fork together with the bearing. Inspect the fork bushing/ball joint for wear and replace the aged dust cover.
Cleaning and Preliminary Inspection
Thoroughly clean the guide sleeve, release fork and pivot shaft. Visually check the height and wear condition of the diaphragm spring release fingers, and ensure the driven disc is free from oil contamination and burn marks.
Cleaning and Lubrication (Critical Step)
Clean the input shaft splines, guide sleeve and fork contact surfaces to remove oil stains and impurities.
Apply a thin, even layer of the specified lubricating grease to the guide sleeve and lightly coat the inner ring of the bearing, taking care to avoid grease entering the bearing raceway. Apply a thin layer of grease to the input shaft splines to prevent jamming.
Bearing and Fork Installation
Slide the bearing onto the guide sleeve in the correct orientation, and snap the dust cover into the locating groove of the housing. Install the fork onto the pivot shaft and align it with the bearing slot, ensuring the bearing shoulder abuts the fork and allows free sliding movement.
Install the fork fixing bolts (with lock washers) and tighten them to the torque specified in the manual (typically 21 N·m).
Clutch Assembly Centering and Installation
Use a centering tool to position the driven disc and pressure plate, ensuring the splines face the correct direction (the boss side faces the pressure plate).
Tighten the pressure plate bolts evenly in a diagonal sequence to the standard torque (typically 12–25 N·m, subject to manual specifications), then remove the centering tool.
Gearbox Reinstallation and Torque Fastening
Slowly refit the gearbox, aligning the input shaft with the driven disc splines to avoid impacting the bearing. Tighten the gearbox mounting bolts to the specified torque in accordance with the manual, and reconnect the clutch hydraulic line/cable.
Hydraulic/Cable System Adjustment (Sequence Cannot Be Altered)
Hydraulic type: After connecting the hydraulic line, bleed the air from the system as per the manual instructions until no air bubbles remain, and ensure the pedal free travel meets the standard (typically 3–4 mm).
Cable type: Adjust the cable length to achieve a 3–4 mm gap between the bearing and the release fingers, and ensure the return spring retracts the bearing to its rearmost position.
Mechanical Inspection
Confirm that the bearing rotates without jamming, the dust cover is not distorted, and the fork moves smoothly without interference.
Functional Test
Reconnect the battery, start the engine, and test gear shifting at idle speed: shifts should be smooth without abnormal noise, and the clutch should disengage completely and engage steadily.
Leakage and Abnormal Noise Check
Inspect the hydraulic line for leaks, and listen for any bearing squealing or fork looseness noise. Conduct a road test to ensure gear shifts are shock-free and the pedal force is normal.
Always disconnect the negative battery cable before installation to prevent short circuits or damage to electrical components caused by accidental contact with wires during operation. When lifting the vehicle, use a professional lift combined with a load-bearing bracket. Never work with only a jack for support to avoid the risk of the vehicle slipping.
Use the vehicle’s VIN to check the Renault Official Parts Catalog and confirm that the release bearing model is fully compatible with the vehicle model (Clio/Scénic/Sandero/Trafic, etc.). Focus on verifying the bearing inner diameter, slot size, and fork adaptation parameters to avoid malfunctions such as incomplete disengagement and abnormal noise due to mismatched models.
Before installation, thoroughly clean the input shaft splines, guide sleeve, fork contact surfaces, and bearing mounting position to remove oil stains, iron filings, rust, and other impurities. This prevents foreign matter from causing bearing jamming or abnormal wear.
Only use Renault-specified lubricating grease (e.g., MOLYKOTE BR2). Apply a thin, even layer to the guide sleeve and input shaft splines; a small amount may be applied to the bearing inner ring. Strictly prohibit applying grease to the bearing raceway or contaminating the driven disc friction surface, as this will cause clutch slipping.
References：
Core Chapters: Chapter 21A (Manual Gearbox), Chapter 392 (Vehicle Lifting and Power Disconnection), and Powertrain sections, covering the installation orientation of the release bearing, fork pivot bolt torque (typically 21 N·m), diagonal tightening procedure and torque for the pressure plate (12–25 N·m), release clearance (3–4 mm), specified grease type (e.g., MOLYKOTE BR2), and hydraulic bleeding/cable adjustment specifications for models such as Clio, Scénic, Sandero, and Trafic.
Key Requirements: Power disconnection, gearbox support, dust cover orientation, clearance between the bearing and release fingers, and the use of lock washers/thread lockers are all derived from the safety clauses and assembly standards in the manuals.
Parts and Parameters: Use the vehicle’s VIN to check the Renault Electronic Parts Catalog (EPC) to confirm the release bearing model and the matching specifications of components such as the fork bushing and guide sleeve.
QC/T 25 Technical Specifications for Automotive Clutch Release Bearings: Specifies requirements for bearing cleanliness, rotational flexibility, dustproofing/sealing, wear resistance, and service life, serving as the fundamental basis for post-installation performance verification.
GB/T 5764 Clutch Release Bearings for Automobiles: Covers technical indicators including radial internal clearance, noise limits, and grease compatibility.
Official Documentation for Release Bearings (e.g., SKF and NSK Original Equipment Manufacturer (OEM) parts): Includes installation benchmarks, dust cover positioning, inner ring lubrication scope, and grease prohibition requirements for the bearing raceway, ensuring no abnormal wear or jamming of the bearing.
Lubricant Manufacturer Specifications (e.g., MOLYKOTE BR2): Clearly defines applicable operating conditions, application quantity, and prohibited contact areas (e.g., the friction surface of the driven disc).
These precautions are a standardized integration and simplified refinement of the above authoritative sources, not a verbatim quote from a single page, tailored as a quick installation reference for mainstream Renault models.
Practical common risk warnings (e.g., incorrect grease use, improper clearance, excessive bolt torque, wrong dust cover orientation) are supplemented, covering the entire process of safety, standard compliance, and fault prevention.
Common requirements across different models are unified, while the inquiry path for model-specific parameters (e.g., VIN-based EPC check) is retained, balancing versatility and accuracy.
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