Car knowledge sharing: How to adjust the clutch cable, the following methods need to be noted.

Release time:

15 Nov,2023

The clutch is the connecting component between the engine and the transmission. The operation of the clutch directly affects gear shifting, so the clutch needs regular maintenance and adjustment. During use, the clutch should be regularly checked for replacement needs. If there is a failure in the transmission components, timely repairs should be made. Main content: Adjust the shape of the clutch (split-type clutch) according to your own vehicle model; determine the transmission ratio, engagement clearance, and adjustment method based on the actual driving conditions of the car and the internal wear of the transmission.

The clutch is the connecting component between the engine and the transmission. The action of the clutch directly affects gear shifting, so the clutch needs regular maintenance and adjustment. During use, the clutch should be regularly checked for replacement needs. If there is a failure in the transmission parts, timely repairs should be made. Main content: Adjust the shape of the clutch (split clutch) according to your vehicle model; determine the transmission ratio, engagement gap, and adjustment method based on the actual driving conditions of the car and the internal wear of the transmission.

1. When repairing the car, first fix the clutch pressure plate (i.e., the semi-clutch mechanism) to the car chassis, stepping on it with your foot to ensure the clutch spring rod contacts the shaft hole with appropriate tightness.

When the tension (i.e., axial force) of the clutch pressure plate spring elastic rod is released, the clutch pressure plate contacts the shaft hole. At this time, the cam on the clutch pressure plate also moves to the center of the shaft hole, at an angle of about 90°. Then gently press with your hand to align it with the shaft hole without loosening. Then push the clutch mechanism by hand to ensure the gap between the clutch pressure plate and the hub bearing surface and bearing is appropriate. Make the gap between the shaft hole and the car pin hole the same, and then install the shaft pressure plate onto the car bearing. Tighten the axial force bolts to match the half shaft with the shaft, allowing the lubricating oil in the bearing seat to flow through the clutch pressure plate and the semi-clutch mechanism's shaft hole. Finally, install it back onto the car chassis and tighten the lock nut to the clutch pressure plate and the fastening shaft (during maintenance, tighten the above bolts). After installation, tighten the pressure plate nuts and shaft hole bolts; then measure the diameter of the threaded hole in the bearing seat. If the cam gap of one shaft hole does not meet the requirements after vehicle maintenance, adjustments are needed: use manual tools to adjust the gap between the transmission pressure plate (pressure plate) and the shaft hole to the specified size. If both methods are unavailable, the gap between the pressure plate pin hole and the shaft hole can be adjusted appropriately to ensure it is just right. However, during assembly, care should be taken to ensure that the clutch pressure plate does not wear out prematurely when the vehicle starts smoothly; conversely, it should be avoided. At the same time, it can also cause gear rotation vibrations, leading to mechanical accidents such as clutch friction plate breakage and wear. This requires automotive maintenance personnel to inspect and adjust based on the actual situation and operating conditions of the vehicle. The specific method is as follows: before car maintenance, first clean the clutch pressure plate, removing carbon deposits, rust, and other foreign objects; check whether the engagement gap meets the requirements. If it does not meet the standards, repair or replace the new semi-clutch mechanism. The engine, transmission assembly, and transmission parts must be in a non-vibrating state; adjustments should be made when the wear of each part allows; adjustment method: let technicians make adjustments.

2. After starting the engine, first pull the clutch lever and the mating surface of the pressure plate to the highest point. At this time, you should immediately step on the clutch pedal. At this moment, you can check whether the separation amount is normal.

If the segregation exceeds 60%, the pressure plate gap can be adjusted until it meets the requirements. When replacing the clutch lever, first pull out the bolt head of the pressure plate, then manually tighten the bolt in the contact area with the pressure plate mating surface. When the segregation amount exceeds 70%, adjustments should be made. If there are friction marks on the pressure plate, it means that the gap between the pressure plates is too large or mismatched. At this time, the clutch lever should be replaced; otherwise, the shaft pin should be adjusted. When it reaches 70% or above, the transmission lining must be replaced to ensure the correct transmission ratio of the transmission. However, it should be noted that if the new gear cannot be put into normal operation immediately, it must be replaced first, and oil should be added before starting the engine. Since the automatic transmission does not respond to the engine, after starting the engine, the clutch pedal should be gently lifted at idle before being fully lifted. This can ensure the clutch works normally, the engine starts smoothly, and there are no abnormal noises from the clutch; it can cause strong impact forces on the rotor of the engine's high-speed rotating parts, avoiding accelerated wear of the clutch!

3. Place the clutch disc at one end of the pressure plate or in the groove where the pressure gauge is installed.

Use an oil gauge to measure the distance between the centerline of the pressure plate and the flange to be 1.5-2.0 mm. Fix the pressure plate to the flange. The minimum flange of the clutch end pressure plate must be parallel to the flange. Otherwise, the pressure gauge will be significantly damaged and should be replaced. Place the adjustment handle in the P position. Ensure the flange on the pressure plate is parallel, then press it into the groove. Then adjust the gap between the 1-2 gears so that the clutch disc sinks about 1.5-2mm.

4. When the angle between the top surface of the pressure plate and the pressure wheel shaft is less than 90 degrees, the cam cover cam should rest against the cam bearing body;

When the angle between the top surface of the pressure plate and the pressure wheel shaft is less than 90 degrees, assuming the cam presses against the cam bearing body, the height of the cam is the height of the clutch. The clutch pedal is usually kept flat. The area that needs adjustment after pressing the clutch pedal is the clutch engagement gap. The car can only shift gears when the clutch is in neutral. When shifting gears, the clutch must be fully pressed; otherwise, it may cause serious damage to the transmission or pose a driving safety hazard. Therefore, it is very necessary to regularly check the clutch. We can also treat the automatic transmission as a machine for better driving experience. Generally, automatic cars use CVT or AT transmissions for driving. So, how can we ensure that the relationship between the transmission and the clutch is relatively tight?

5. During the adjustment process, a non-reverse tooth correction method should be used.

First, accelerate and decelerate to no load in P gear; the height and speed of the clutch pedal must meet the requirements. Then, press the clutch pedal before shifting gears so that the car can move slowly on the road without reverse forks and reverse teeth. Then stop and let the engine run for 5-10 minutes. Check whether the clutch pedal is fully pressed. If you feel the clutch pedal is pressed down but does not immediately engage, the clutch is faulty. If the vehicle is moving very slowly, it cannot be guaranteed that it will not stall. If it still does not stall, it means the clutch cannot smoothly separate. Normally, we cannot completely avoid the possibility of this failure. Because it may be that our car's clutch needs timely repair or replacement after a failure; otherwise, it will affect our relationship with the car's lifespan. This is something we should pay attention to.

6. Perform an adjustment every 3000 kilometers or so. First, shift the gear lever into gear, drive slowly for a few minutes to 1-2 minutes, then turn on the ignition switch (start the engine). At this time, if you shift into reverse gear, it still cannot engage. The required gear is sufficient.

If the upshift limit still cannot be released when shifting into reverse, the clutch needs to be adjusted again. At this time, the vehicle should be parked in place, waiting for the gear lever or other normal operations. During use, due to fatigue, local overheating, and wear of the friction plate, camshaft, and friction plate surface leading to internal metal parts loosening, the clutch mechanism can cause clutch transmission, which in severe cases may lead to engine failure. Therefore, attention should be paid to regular maintenance and adjustment when using the clutch.

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