Gears engage with effort: gearbox malfunctions
In cars with a manual transmission, gear shifting is done by the driver himself. Using a lever from the interior, it acts on the rocker and then on the entire gearbox mechanism. Simply put, the driver moves the gears on the shafts.
Since the shafts rotate at high speeds, cooling is required. This is done using special gear oil. Oil also protects the surfaces of rubbing parts from premature wear. The lubricant must be changed on time. On average, this is done after every 40-50 thousand kilometers.
As for the reasons for tight gear engagement, there may be several of them. However, most often they are associated with problems in the clutch or the gearbox itself. If you study the list of the most common breakdowns, then you can highlight the following:
The exception is reverse gear, since it does not have synchronizers; By the way, when the reverse gear is difficult to engage, extraneous noises, clanging, and crunching often occur. Such phenomena directly indicate wear of the gear teeth.
Problems with switching to automatic transmission
Shifting problems with automatic transmissions are not uncommon. Problems with the automatic machine arise for several reasons.
- backstage malfunction . This mechanism is the most problematic in old-type automatic transmissions. To eliminate the malfunction, the unit will need to be replaced. In most cases, it will be necessary to dismantle the gearbox for these purposes;
- insufficient oil level . The presence of lubricant leaks on the automatic transmission housing may indicate wear of the sealing gaskets, which are not difficult to replace yourself. After this, you need to change the oil in the box. Also, owners of cars with an automatic transmission are recommended to visually inspect the gearbox for oil leaks at least once every 2000 km;
- problems with the transmission control unit can ultimately cause the automatic transmission to completely lock up. To fix the problem, you will need to replace the failed mechanism and thoroughly inspect the electrical part of the gearbox.
Important! To solve problems with automatic transmission, it is recommended to conduct computer diagnostics of transmission faults.
What's the result?
So, the main reasons why gears are difficult to engage are problems with the clutch mechanism and gearbox. However, most of them can be eliminated yourself if you have tools, spare parts and certain skills.
Why may it be difficult to engage gears or why first gear, second, reverse, etc. may not engage? The main causes of gearbox malfunctions, recommendations.
Reasons for difficulty shifting gears with the engine running. Transmission oil and level in the gearbox, wear of synchronizers and gearbox gears, clutch.
How to change gears without a clutch: driving a manual car without a clutch in case of malfunction. Tips and tricks.
Manual transmission gears (speeds) do not engage after replacing the clutch: main reasons, settings and adjustments. Diagnosis of problems, useful tips.
Clutch: basket, release, clutch disc. Purpose and design, principle of operation of the clutch basket. How to increase clutch life.
The automatic transmission does not change gears: the car does not move forward or backward, the automatic transmission does not switch to individual gears, reasons.
Source
About the clutch and its drive
Many people often confuse faults between the gearbox and attachments.
By this term I mean the clutch and its drive (in one case it is hydraulic, in the other it is mechanical). As usual, they are located outside the mechanical box, but directly affect its operation. The clutch itself consists of a disc and a basket. Over time, the disc wears out, or rather its friction linings wear out and it can slip and simply not stop. THIS leads to poor gear shifting and slipping (when the engine growls but the car does not develop power).
If the basket is damaged, it has special “petals” that are affected by the release bearing, then as a rule they break and you simply cannot engage the gear! None at all.
If the clutch pedal has become “light”, not the same as it was before, and again there is no engagement, then this may be a problem with the drive. Either the cable broke or liquid leaked out (in the case of a classic VAZ).
However, this is a problem with the attachments, now let’s go over the main faults and how to fix them, I’ll post a table.
Messages 12
1 Topic by ander_kr 2014-05-13 07:52:26
Topic: Gears don't engage well (they hit something and grind)
Hi all! I didn’t find anything similar on the forums. The situation is like this, VAZ 2110, 16kl, 04. At first, 1st gear was difficult to engage from time to time (it rested on something), then 1st and 2nd were engaged with difficulty and every other time, reverse turns on with a slight grinding noise, sometimes not the first time. Then 1.2 hardly turn on, they rest against something, then I noticed that if the gearshift knob is not pushed to the left all the way when shifting gears to 1.2, then the gears are engaged (no grinding, but like on a washboard), it turns out that 1 and 3 are very close, as are 2 and 4. The clutch pedal is slightly lowered. I pulled the cable, the pedal became slightly higher than the brake pedal, then the gears began to engage as expected in the extreme left position (again, as on the washboard), 3rd gear seems to click there. The travel of the clutch pedal has increased (very inconvenient) and the clutch engages with the engine only at the very end. YES, AND THIS IS ALL BOTH INITIALLY AND AFTER TENSIONING THE CABLE BOTH WITH THE ENGINE RUNNING AND ON STUFFED. Can anyone tell me what? They say on the forums that since they don’t shift gears when the engine is switched off, it’s definitely a case of removing and repairing the gearbox. Could there be another reason? I don’t want the service department to take the trouble to repair the gearbox for nothing. Thank you all
2 Reply from klimashov.roman 2014-05-13 08:13:06
Re: Gears don't engage well (they hit something and grind)
Well, first of all, pay attention to the clutch and in particular to the basket, and if it is already all crooked or askew, replace it. Try to adjust the rocker to the position where it will engage best and at the same time unscrew the bolts with the speed locks, there are 3 of them, well, this is more likely to calm the soul. If not, then most likely the gears have come to a halt and this is just a repair. Only if you take it to the service station, be as close as possible when they start disassembling it, otherwise they will issue you a bill for a new box; it will be easier to buy, and they can take out the good parts
Knocking out the speed
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If it turns on, but immediately turns off, then the latch may be stuck in the squeezed position, so it no longer does its job. It is also possible that the spring that presses the ball retainer is destroyed. Without the force of the spring, it will not be able to hold the slider in the desired position.
If significant force is applied while shifting into gear, the shift fork may bend.
If this happens, then the gears will no longer fully engage, and the slider itself will not reach the stop, which will prevent the latch from entering the groove.
Poor switching may also be caused by incorrect installation of the gearshift knob. In this case, the rocker does not bring the gear to full engagement.
VAZ 2110 16 valve gears don't engage well - reasons
I have the same *****, I haven’t solved the problem yet, let me know if anything is resolved
As soon as I solve the problem I will post it.
Check the clutch pedal travel and make sure there is nothing obstructing it. Happens.
No, everything is fine, I checked it right away, right down to the floor. It seems like there might be something wrong with the box, damn it.
I have exactly the same problem. It hits something. If you repress the clutch, it sometimes helps. It happens with reverse speed too. I've been driving this way for almost a year now, and I'm already used to it. In the workshop they said the disease is ten-thousand and you can live..
I’m not going to leave this matter like this, otherwise sometimes when it doesn’t stick in all the way, out of habit I still start to move away and in the box the gears are clearly not fully engaged and there’s a crunching sound, and I’m afraid this may lead to the box being repaired
