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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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CT5740F0 3151000167
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Quality :
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refurbish
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Delivery time :
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30 days
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As a commercial vehicle brand, DAF’s clutch release bearing installation adheres to the core logic of heavy-duty adaptation for commercial vehicles while aligning with the characteristics of its own clutch transmission structure. Operation requires emphasis on component compatibility and installation precision. Below is a general installation method integrated from commercial vehicle maintenance practical experience; specific details are recommended to be adjusted in conjunction with the corresponding model’s service manual:
Select a genuine DAF or OE-grade release bearing compatible with the specific DAF model (e.g., DAF XF, CF series). Manually rotate the outer ring to confirm smooth rotation without jamming or metallic abnormal noise, and ensure the seal ring is intact and undamaged.
Prepare tools including socket wrenches, special snap ring pliers (if the model is equipped with a snap ring structure), commercial vehicle-specific high-temperature lithium-based grease, a clutch alignment tool, a heavy-duty jack with stable supports, and rags and anhydrous ethanol for cleaning.
Park the vehicle on a flat, hard surface, engage the handbrake, secure the wheels, and disconnect the negative battery terminal. Lift the vehicle body with a heavy-duty jack and firmly support it bidirectionally with professional stands.
Use a transmission jack to support the transmission case, then sequentially remove components connected to the transmission such as the drive shaft, shift mechanism, and clutch hydraulic lines. Remove the transmission assembly and take out the old release bearing.
Thoroughly wipe the release guide sleeve, release fork contact points, and flywheel area with anhydrous ethanol to remove oil stains, rust, and debris. If the release fork has wear grooves or deformation, replace it simultaneously to avoid affecting the fit of the new bearing.
Evenly apply a thin layer of commercial vehicle-specific high-temperature lithium-based grease to the contact surfaces of the new release bearing and the contact points between the release fork and the bearing. The amount should be moderate—excessive grease may melt and splatter under heavy-duty, high-temperature conditions, contaminating the clutch disc.
A small amount of grease can be applied to the outer surface of the release guide sleeve to reduce sliding resistance, but never apply grease inside the bearing to avoid hindering its normal operation.
Smoothly slide the new release bearing onto the release guide sleeve. Most DAF commercial vehicle models secure the bearing with snap rings or buckles: use special snap ring pliers to firmly lock the snap ring into the groove, ensuring the bearing is free from looseness and axial play. For some older DAF models, the bearing assembly can be directly pressed to engage with the drive structure.
Align the contact position between the release bearing and the release fork during installation to ensure uniform contact, avoiding misalignment which may cause incomplete clutch disengagement.
If installing the clutch disc and pressure plate simultaneously, insert a clutch alignment tool to fix the clutch disc position, preventing displacement that could affect the release bearing’s fit.
For DAF heavy-duty models, check the angle of the clutch release lever to ensure surface contact (not point contact) with the release bearing—this avoids rapid local wear caused by point contact. Simultaneously calibrate the release lever clearance, which should generally be maintained at approximately 3–4 mm to adapt to heavy-duty operating conditions.
Slowly and accurately reset the transmission assembly, then sequentially reinstall the removed components such as the engine mounts, shift linkage, and drive shaft. Use a torque wrench to tighten all fixing bolts to the torque specified by DAF for the model to prevent driving vibration caused by loose bolts. Reconnect the clutch hydraulic lines or mechanical transmission joints and ensure no leakage.
After starting the vehicle, observe that the clutch operates without abnormal noise at idle. During the test drive, focus on testing heavy-duty starting, shifting, and other operating conditions. Check that the clutch engages and disengages completely, with no difficulty shifting, starting jitter, or hydraulic line leakage. The installation is complete once all functions are confirmed normal.
Based on DAF’s commercial vehicle heavy-duty characteristics, clutch system transmission structure (e.g., snap ring/buckle fixation, heavy-duty adapted release lever design), and universal commercial vehicle maintenance safety standards, the following are core precautions categorized by dimension. They balance heavy-duty operating condition adaptability, operational safety, and component compatibility, with emphasis on critical risk points for release bearing installation (such as heavy-load pressure adaptation, component fixation strength, and lubrication durability):
Lifting the vehicle body must use a commercial vehicle-specific heavy-duty jack + bidirectional stable supports (substituting with passenger car jacks is prohibited). Support points must align with the designated positions on the DAF frame (refer to service manual markings). Park the vehicle on a hard, flat surface, lock the wheels with reinforced wheel chocks, and shake the vehicle to confirm stability.
When removing/installing the transmission assembly (DAF commercial vehicle transmissions weigh approximately 80–150 kg), mandatorily use a hydraulic transmission hoist for auxiliary support and coordinate with at least 2 operators. Manual handling by one person with brute force is prohibited to prevent component falling, crushing injuries, or transmission case deformation.
The operating area must be dry, well-ventilated, and away from open flames (to avoid contact with flammables such as diesel and hydraulic oil), with a dry powder fire extinguisher on standby. After disconnecting the negative battery terminal, wrap the connector with insulating tape and attach a "No Power-On" label to prevent accidental reconnection and short circuits.
Special notes for hydraulic clutch models:
Before disconnecting hydraulic lines, release system pressure via a dedicated pressure relief valve (some DAF models require a diagnostic tool for auxiliary pressure relief) to avoid high-pressure hydraulic oil spraying and causing injuries.
Immediately seal the line interfaces with special plugs after disconnection—temporary blocking with rags or tape is prohibited (prone to impurity ingress into the system).
References：
The precautions for installing the clutch release bearing of DAF commercial vehicles (as previously provided) are not derived from a single exclusive DAF official service manual or individual authoritative document. Instead, they are a comprehensive compilation integrated from various public sources related to commercial vehicle maintenance. The specific reference directions for information sources are as follows:
Core operational points mentioned in the content—such as securing the vehicle body with a heavy-duty jack paired with professional supports, providing auxiliary support before removing the transmission assembly, and lubricating the release bearing’s contact surfaces with high-temperature lithium-based grease—are highly consistent with the universal installation guides for commercial vehicle clutch release bearings published on platforms like Autohome and PCauto. These general guides include basic requirements such as cleaning installation contact surfaces and avoiding grease application inside the bearing, which mutually corroborate the preliminary cleaning and grease application specifications in the content, forming the basic framework of the document.
Details in the content, such as the selection of compatible bearings for DAF XF/CF series models, snap ring fixation methods, and the requirement to maintain a release lever clearance of 3–4 mm for heavy-duty models, are derived from practical DAF maintenance cases shared by commercial vehicle repair professionals. For example, industry practices—such as DAF heavy-duty commercial vehicles commonly using snap rings to fix release bearings, and hydraulic systems requiring specialized tools for pressure relief and air bleeding—provide the basis for special precautions in the content, including compatibility checks and hydraulic system operations. Additionally, specific details like the DAF XF106 being compatible with release bearing model 1679580 are organized based on DAF’s common parts matching rules.
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