So-called "missing gears" refers to the situation where, during driving, the gearshift automatically returns to the neutral position, causing the sliding gear to leave its normal meshing position. So-called "gear confusion" refers to the inability of the gearshift to engage the required gear, or after engaging, it does not enter the needed gear but instead enters another one. This causes the vehicle to lose control and may even lead to accidents. Gear confusion and missing gears are common problems in a transmission system. Both are related and occur due to wear and looseness of relevant components in the transmission system or improper adjustment of clearance.
Cause Analysis:
1. Wear, looseness, breakage, or loss of the gearshift positioning pin, which causes it to lose control and swing arbitrarily.
2. Failure of the interlock device on the gear fork shaft due to erosion; excessive wear and looseness of the gearshift ball head.
3. Gears, splines, or sleeves worn into a conical shape along the tooth length direction, causing them to disengage under axial force generated during operation.
4. Excessive wear of parts such as the gear fork shaft groove, lock pin, etc.; bending deformation of the fork or looseness between working surfaces and gear ring grooves.
5. Loosening of the rear-end fixing nut of the second shaft, leading to axial movement of the second shaft.
6. Loose or disintegrated locking pins of the synchronizer, leading to ineffective cone surface operation.
When a certain gear is found to be missing, push the gearshift into that gear again, then remove the transmission cover to observe the gear meshing condition. If the gear meshing is good, the problem lies in the gear-shifting mechanism. Push the gear fork of the jumping gear by hand to test its positioning device. If the positioning is poor, remove the gear fork shaft and check the positioning ball and spring. If the gear is not fully meshed, push the gear or sleeve by hand to ensure accurate meshing, and inspect whether the gear fork is bent or loose, if the fixing screws of the gear fork are loose, and if the gap between the fork end and gear slot is too large. If gear shifting is smooth, and the gear or sleeve can fully mesh, check whether the gear is worn into a conical shape, if the bearing is loose, and if the transmission shaft moves front and back. Based on the issues discovered during the inspection, repair according to standards, and replace parts if necessary, to completely eliminate the problems of gear confusion and missing gears.
When maintaining your car, it's easy to fall into some misconceptions. When browsing online, try to gather more information on this topic, remember what you should and shouldn't do during maintenance, avoid unnecessary detours, and keep your car healthy and valuable. Here are four things you should not do:
1. Do not wash the inside of the car body with water.
Many private car owners choose to wash their cars themselves during holidays, using water to rinse the car body while wiping it with a cloth. It should be noted that the inside of the car body should not be directly washed with water. Dirty floor mats can be cleaned with a vacuum cleaner or taken out and brushed clean with detergent, dried, and then put back in. The recessed channels and holes under the rubber floor mats in the driver's cabin are numerous. Water entering will not dry by itself, but instead flow through the holes onto components like the transmission, causing rust. The correct method is to use a vacuum cleaner for cleaning, then wipe with a cloth to prevent water accumulation.
2. Do not mix coolants from different brands.
When the coolant in your car is insufficient, have you ever poured in coolant from a different brand in a hurry? If so, it's recommended to drain the coolant and refill with coolant from the same brand. Coolants from different brands may have significantly different chemical properties. Corrosion inhibitors in one may corrode those in others. Coolants from different brands use different corrosion inhibitors, so mixing them is not recommended to avoid unnecessary trouble.
3. Do not apply oil to tire bolts and nuts.
When bicycle bolts rust, we often apply oil to make them function properly again. But what about cars? Some car owners coat the wheel bolts and nuts with lubricating oil to prevent rust, not realizing that this practice is not only incorrect but also poses a safety hazard. At high speeds, the bolts and nuts may easily loosen or even fall off, leading to traffic accidents. Once tightened, bolts and nuts have a self-locking feature. Applying oil unnecessarily may cause potential risks.
4. Do not press the gas pedal when starting an electronically injected car.
The engine of an electronically injected car differs from that of a regular car. Its fuel injection control device can automatically adjust the amount of fuel supplied based on the engine temperature and operating conditions, ensuring smooth engine start-up. In cold weather, most drivers tend to press the gas pedal a few times before starting the engine. However, this method does not apply to electronically injected cars. Equipped with an electronic fuel injection system, these engines can automatically increase fuel supply. Pressing the gas pedal as one would with a regular car may result in poor engine start-up.
The above content is jointly released by Sanitation Garbage Truck Official Website (http://www.clwlu.com/) | www_clwlu_com and Garbage Truck Manufacturer (http://www.clwwcw.com/) | www_clwwcw_com. For more content: Dongfeng Sprinkler Truck Price, Prevent air, moisture, and dust from entering internal areas prone to rust, Aerial Work Platform Price, Common Inspection and Maintenance Issues for Dongfeng Dump Truck Systems.