Transmission repairs can sometimes be very expensive when it requires a complete overhaul. When they need a restore, they often ask you to spend a lot of money fixing a problem that you may not understand well.
There are different types of transmissions and each type requires different komatsu transmission kits and different repair parts. When a transmission needs major repairs, you usually have three options.
The first is to remove and restore the existing gearbox, then reinstall the same module that was just restored into your car. The second option is to replace the existing unit with a redesigned gearbox. The third is to replace the existing device with a used transmission.
For major repairs, usually carried out at a transmission repair shop (also called transmission restoration), the transmission is removed from the vehicle and completely disassembled, with the parts laid out on a workbench.
Each hard part is inspected for wear and damage then cleaned with a special cleaning solution or replaced with another part depending on the condition. Parts with friction surfaces such as strips and plugs are replaced, as are all gaskets and seals.
The torque converter is also replaced, usually with a modified one. Upgrades are usually made to correct the flaws of the original design from the year of manufacture. Automakers often offer upgrade kits at transmission shops to fix these design flaws.