(Updated on June 25, 2020)
A vehicle with a manual transmission means you have to manually change gears by shifting the transmission. Although this can offer a fun and rewarding experience for the driver and require less maintenance for the vehicle, there are situations that could arise where your manual transmission shifting becomes more difficult.
Sometimes it will get to the point where you can’t even change gears at all. Once that happens, the vehicle will might as well be undrivable. You will have to get it towed to the nearest auto mechanic or dealership to have the transmission checked out
Top 5 Reasons a Manual Transmission is Hard to Shift
Hard shifting with manual transmission usually has to do with a problem in the gear system or with the clutch. Either one of the parts of the gear system is damaged or it is just completely worn out from too much use.
Below are five of the most common causes of a manual transmission being hard to shift gears.
1) Damaged Master Cylinder
If any one of these components is damaged, particularly the release cylinder or the clutch master cylinder, then you will have difficulty shifting gears.
2) Damaged Gears
There are lots of gears in a manual transmission system. There is 1st gear, 2nd gear, 3rd gear, 4th gear, 5th gear, reverse gear, and sometimes a 6th gear. There is also a hub gear which goes between 1st gear and 2nd gear, and then 3rd gear and 4th.
If any one of these gears becomes damaged or worn out, then you will have trouble shifting them.
3) Damaged Hub Sleeve
When the hub gear bridges between the main gears, the hub sleeve (or synchronizer hub) is what actually engages these gears. It can move either right or left, depending on where the gear has shifted. The sleeve helps ensure the hub gear teeth synchronize with the synchronizer ring’s teeth.
If the hub sleeve is worn or damaged, then synchronization won’t be there. This will cause shifting difficulties and other problems.
4) Damaged Synchronizer Ring
The synchronizer ring has a lot of small teeth which allow the hub sleeve to easily engage it, so it can go into one of the main gears.
If there is damage or wear to the synchronizer ring, then it won’t be able to engage with the hub sleeve. As a result, you will have shifting issues.
5) Low Level of Transmission Fluid or Gear Oil
It is important to flush and change your transmission fluid (or gear oil) every once in a while. If you have signs of burnt transmission fluid and you don’t change it or if you have a transmission fluid leak, then your gears won’t be getting the lubrication they need.
Low transmission fluid is not something to be ignored. This will not only make it harder for you to shift gears, but your transmission will get damaged as a result. Furthermore, you will hear lots of strange noises coming from it too.
How to Fix
Where the transmission is concerned, nothing is going to be an easy or affordable fix. If you have low transmission fluid or gear oil, then that will be the most affordable problem to fix.
But if there is a leak, then you will have to seal the hole or replace the fluid lines. This will still be more affordable than having to repair or replace the entire transmission.
One thing is for sure though, if you wait too long to fix whatever is causing the shifting problems, then your transmission can become permanently damaged. Don’t let this happen to you. Get your vehicle to the nearest mechanic as soon as you experience shifting problems.