Clutch plate，31250-26252， 31250-60382.31250-26252.31250-60351.312502625 for Toyota

The following are the general installation steps and precautions for Toyota clutch friction discs: Preparation before installation •  Vehicle preparation: Park the vehicle on a flat, solid surface, pull up the handbrake, and put the transmission in neutral. Lift the vehicle using a jack or lift, and ensure that the vehicle is stably supported on safety stands to facilitate the operation.  •  Tool preparation: Prepare common tools such as socket wrenches, torque wrenches, screwdrivers, as well as special clutch installation tools that may be needed, such as guide shafts.Component Inspection: Carefully inspect the new clutch friction disc to ensure its surface is free from signs of damage such as wear, cracks, and oil stains. At the same time, check if the spline hole of the friction disc is deformed or damaged. Additionally, inspect related components such as the clutch pressure plate and release bearing to ensure they are in good condition. If any issues are found, they should be replaced promptly.  •  Cleaning Work: Thoroughly clean the surface of the engine flywheel and the clutch pressure plate with a clean cloth or solvent to remove oil stains, dust, and impurities. This prevents these foreign objects from affecting the normal operation of the clutch friction disc and causing problems such as slipping.Installation Steps •  Remove relevant components: First, disconnect the negative cable of the battery to prevent short circuits during operation. Then, depending on the model of the vehicle, it may be necessary to remove components connected to the gearbox such as the drive shaft, shift cable, clutch oil pipe, as well as the bolts that fix the gearbox. Separate the gearbox from the engine and place it properly.  •  Remove the old friction plate: After the gearbox is removed, the clutch pressure plate and the old clutch friction plate can be seen. Use a socket wrench to gradually loosen and remove the fixing bolts on the pressure plate in a diagonal order. Take the pressure plate off the engine flywheel, and at this point, the old clutch friction plate can be easily taken down.Installing a new friction plate: Place the new clutch friction plate correctly on the engine flywheel, paying attention to its installation direction. Generally speaking, for some Toyota models, the side of the clutch friction plate with a boss should face the gearbox, or the installation direction should be determined according to the marks on the friction plate. Ensure that the splined hole of the friction plate matches the splines of the gearbox input shaft.  •  Installing the pressure plate: Align the clutch pressure plate with the locating pins or holes on the flywheel, place it on the friction plate, and then gradually tighten the fixing bolts of the pressure plate in a diagonal order. During the tightening process, use a torque wrench to operate according to the torque specified in the repair manual to ensure that the pressure plate is installed firmly and under uniform force, avoiding problems such as pressure plate deformation.Install the release bearing and release fork assembly: Apply an appropriate amount of lithium-based grease to the relevant connection points to reduce friction and wear between components. Then, correctly install the release bearing and release fork assembly in the specified position, ensuring that the release bearing can slide freely on the sleeve of the first shaft of the gearbox.  •  Install the gearbox: Align the gearbox with the engine, slowly push the gearbox onto the engine, and ensure that the input shaft of the gearbox is correctly inserted into the splined hole of the clutch friction plate. Then, install the bolts for fixing the gearbox and tighten them to the specified torque. Next, reconnect the previously removed drive shaft, shift cable, clutch oil pipe, and other components.Restore other components and check: Put other components at the bottom of the vehicle back to their original positions, check if all connection parts are secure, and if there are any missing bolts or pipelines, etc. Finally, reconnect the negative cable of the battery.Post-installation Testing Manual Inspection: Before starting the vehicle, press the clutch pedal several times to feel if the pedal's travel and resistance are normal. Check if the clutch engages and disengages smoothly, and if there are any jamming or abnormal conditions. Startup Test: Start the vehicle, shift into first gear, and slowly release the clutch pedal. Observe whether the vehicle can start smoothly, if the clutch can engage and disengage normally, and if there are any issues such as slipping or abnormal noises. If any abnormalities are found, stop the vehicle immediately for inspection, identify the cause, and perform repairs.

When installing the Toyota clutch friction disc, in addition to the installation steps mentioned earlier, there are the following important precautions: •  Ensure components are clean: Keep the clutch friction disc, pressure plate, flywheel and other components clean throughout the installation process. Before installation, thoroughly clean the surface of the flywheel and the clutch pressure plate with a clean cloth or solvent to remove oil stains, dust, impurities, etc. Any foreign matter may affect the normal operation of the friction disc, leading to problems such as slipping. At the same time, prevent dust and debris from entering other parts of the clutch.  •  Install the friction disc correctly: Pay special attention to the installation direction of the friction disc. Generally speaking, for some Toyota models, the side of the clutch friction disc with a boss should face the gearbox, and the side without a boss should face the flywheel. Some friction discs will be marked with "Front" or "Back" on the edge or surface. During installation, the direction should be judged according to the marks. If the installation direction is wrong, it may cause failures such as clutch slipping, increased wear, or inability to disengage normally.Use special tools: It is recommended to use special tools for clutch installation, such as guide shafts, to ensure that the friction plate can be accurately installed on the flywheel. This can also prevent deformation or damage to the clutch plate caused by improper operation, and at the same time, help the transmission input shaft to be smoothly inserted into the splined hole of the friction plate.  •  Ensure good lubrication of connection parts: During the installation process, apply an appropriate amount of lubricating oil to the splines of the clutch disc to ensure smooth operation between it and the splines of the first shaft of the transmission. At the same time, the release bearing and related connection parts also need to be fully lubricated, and the release bearing should be able to slide freely on the sleeve of the first shaft of the transmission. However, it should be noted that excessive grease should not be applied, otherwise it may cause the clutch to slip.

References：The content you mentioned regarding the precautions for installing Toyota clutch friction plates mainly refers to the following materials: •  Autohome: Relevant Q&A pages on Autohome, such as What are the precautions for installing clutch friction plates?, which mention key points such as cleaning the surfaces of the pressure plate and flywheel before installation, paying attention to the installation direction of the friction plate, and applying lubricating oil on the splines; there is also What type of clutch does the Toyota Corolla use?, which involves matters such as ensuring the flatness of related components and controlling axial clearance during clutch installation, all of which provide references for organizing the precautions.  •  Xi'an Auto Network: The article Methods for Correct and Reverse Installation of Clutch Plates emphasizes that the installation directions of clutch plates vary for different models, the key points of installation direction for models such as the Toyota Corolla, as well as precautions such as confirming marks during installation, using special tools, and avoiding forced installation, which provide a basis for the relevant content.toyari:Toyota Yaris: Clutch Unit / Installation introduces the installation method of the clutch unit for the Toyota Yaris. It mentions precautions such as keeping components clean during installation, paying attention to the installation direction of the friction disc, using special tools, and the need to replace the clutch release bearing, bearing assembly, and mounting bolts after removing the manual transmission