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Type :
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clutch pressure 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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T5189-14501
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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 installation of the clutch pressure plate for Kubota tractors requires preliminary preparations such as marking and cleaning first, followed by operations in steps including positioning and tightening, and finally commissioning. Details may vary slightly among different models. For specific operations, refer to the following general method:
Park the tractor on a flat surface, turn off the engine, engage the handbrake, and disconnect the connection between the engine and the transmission.
Prepare special wrenches, a torque wrench, cleaning cloths, lubricating grease, a clutch alignment tool (or transmission input shaft, nylon rod of the same specification). Prepare spare bolts if the original bolts are rusted.
Before removing the old pressure plate, use spray paint to mark the alignment between the pressure plate and the flywheel to avoid damaging the dynamic balance and causing engine vibration after installation.
Thoroughly clean the mating surfaces of the flywheel and pressure plate to remove oil stains, metal debris, and rust. Meanwhile, check if the pressure springs of the pressure plate have normal elasticity and if the pressure fingers are worn; replace damaged components in advance.
Place the clutch friction disc between the flywheel and the pressure plate. Insert a clutch alignment tool into the center hole of the friction disc to ensure it is centered. If no alignment tool is available, a transmission input shaft or nylon rod of the same specification can be used as a substitute to prevent the friction disc from shifting during pressure plate installation.
Note that the clutch friction disc has a front and back side; install it according to the markings (usually the convex side faces outward).
Fit the pressure plate over the friction disc, align it with the locating pins on the flywheel, and simultaneously match the pre-made alignment marks to ensure the installation angle of the pressure plate is consistent with that before removal, avoiding dynamic balance failure.
Insert the pressure plate fixing bolts. Apply an appropriate amount of thread locker to the bolt threads, then gradually tighten the bolts in a cross-symmetrical pattern in 3-4 stages.
Finally, use a torque wrench to tighten the bolts to the torque specified by Kubota for the specific model (e.g., the torque for corresponding bolts of some models may be between 29-35 N·m; refer to the model-specific manual for exact values) to prevent pressure plate deformation due to uneven force.
Apply a small amount of lubricating grease to moving parts such as the pressure finger sockets to reduce wear during subsequent use.
If other accessories were removed from the pressure plate during disassembly, reinstall them in their original positions, ensuring the pressure springs fit into the corresponding slots to avoid jamming after installation.
Use a depth gauge to measure the height of the three pressure fingers, ensuring they are on the same plane with an error within a small range (e.g., less than 0.2 mm).
If the heights are inconsistent, adjust them using the corresponding adjusting screws on the pressure fingers, while reserving a reasonable clearance to accommodate future wear of the clutch disc.
Remove the alignment tool and reconnect the engine to the transmission.
Start the tractor and repeatedly press the clutch pedal to check if the clutch engages and disengages smoothly and if gear shifting is normal.
If issues such as heavy pedal feel or incomplete disengagement occur, recheck the pressure finger clearance or bolt tightness.
The following precautions focus on installation safety, component compatibility, compliance with technical parameters, and reliability in subsequent use, integrating the working characteristics of tractor clutch systems and the design requirements of Kubota models:
Ensure the tractor is in a shut down and power-off state throughout the installation process. Engage the handbrake and place wheel chocks under the wheels to prevent the machine from sliding. It is prohibited to operate while the engine is running or not fully powered off to avoid accidents caused by sudden clutch engagement.
During disassembly/installation, if it is necessary to pry the flywheel or pressure plate, use wooden or rubber pry bars. It is strictly forbidden to directly strike the flywheel ring gear, pressure plate working surface, or locating pins with metal tools to prevent component deformation and tooth surface damage.
When installing with multiple people (e.g., lifting and installing the pressure plate), confirm the force application rhythm in advance to avoid component falling or personnel squeezing due to improper coordination. Keep the installation area clean to prevent tools, bolts, and other debris from falling into the transmission or engine.
Before installation, confirm that the pressure plate, clutch friction disc, bolts, and other components are Genuine Kubota parts or compliant compatible parts. Mixing components of different models and specifications (e.g., inconsistent spring coefficients of pressure springs, mismatched bolt thread specifications) is prohibited; otherwise, it will cause uneven force on the pressure plate and dynamic balance failure.
Inspect the flywheel mating surface: If there is warpage (flatness error exceeding 0.1mm), deep scratches (depth ＞ 0.3mm), or severe rust, the flywheel must be turned and repaired or replaced first. Otherwise, the pressure plate and flywheel will not fit tightly, leading to slipping, vibration, and other issues.
Focus on inspecting the clutch friction disc:
The surface should be free of oil stains, ablation, and exposed rivets (replace if the distance between the rivet and the friction disc surface is ＜ 0.5mm);
The spline hole should fit smoothly with the transmission input shaft without jamming or excessive wear (replace if the clearance is ＞ 0.3mm);
Install strictly according to the front/back marking, and reverse installation is prohibited.
Inspect the pressure plate components:
Pressure springs should be free of breakage, deformation, and elastic attenuation (able to reset quickly after pressing without jamming);
Pressure fingers should be free of wear and deformation, and the adjusting screw threads should be clear without stripping. Damaged components must be fully replaced, and forced use is prohibited.
References：
The precautions for installing the clutch pressure plate of Kubota tractors you previously reviewed are not derived from a single official original document or specific authoritative source. Instead, they are compiled and summarized based on the general technical specifications for Kubota tractor maintenance, industry-universal guidelines for agricultural machinery clutch installation, combined with relevant maintenance data and practical operational experience. The core reference sources are as follows:
Maintenance manuals for models such as the Kubota Mx5100 include inspection standards for clutch pressure plates and friction discs (e.g., gap tolerances of pressure plate-related components, rivet depth, and other parameters), as well as basic requirements for bolt tightening. These serve as the core basis for the technical parameters, component compatibility, and other requirements in the precautions. For example, the control of pressure finger height deviation and bolt torque specifications all refer to the universal standards in such manuals.
Practical content on the disassembly and assembly of tractor clutches shared by agricultural machinery maintenance practitioners on platforms like Douyin (TikTok) — such as making alignment marks between the pressure plate and flywheel before installation to avoid dynamic balance failure, and applying lubricating grease to pressure finger sockets to reduce wear — highly aligns with the requirements for installation marking and component lubrication in the precautions. These shared details supplement safety and operational tips at the practical level.
Technical documents such as Disassembly, Assembly, and Inspection of Main Components of Tractor Clutches included on platforms like Originality Document and Document Download Network specify universal norms for clutch installation, such as "cross-symmetrical bolt tightening," "inspection of flywheel flatness," and "light-load running-in after installation." These industry-consensus maintenance key points are also integrated into the summarized precautions to ensure the content's universality and reliability.
General technical requirements for clutch installation from platforms like Pacific Auto Q&A and Auto Encyclopedia — such as prohibiting lubricating grease from contaminating the friction disc surface and ensuring consistent height of release levers (pressure fingers) — are applicable to various clutch systems and equally suitable for Kubota tractors. These guidelines serve as important references for component inspection and operational specifications in the precautions.
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