The Toyota A750H 5-speed automatic transmission was produced in Japan from 2004 to 2009 and was installed on all-wheel drive versions of the Crown and Mark X sedans together with the 4GR-FSE engine. This automatic transmission is one of the versions of the fairly common Aisin TB-50LS.
Specifications
| Type | automatic transmission |
| Number of gears | 5 |
| Type of drive | all wheel |
| Engine volume, l | up to 2.5 |
| Torque output, Nm | up to 320 |
| Recommended oil | Toyota ATF WS |
| Oil capacity, liter | 9.1 |
| Partial replacement, liter | 4.0 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~400 000 km |
| Weight, kg | 85 |
Gear ratios Toyota A750H
Using a 2005 Toyota Mark X with a 2.5 liter engine as an example:
| Main | 4.3 |
| 1st | 3.520 |
| 2nd | 2.042 |
| 3rd | 1.400 |
| 4th | 1.000 |
| 5th | 0.716 |
| Reverse | 3.224 |
Using
The transmission was installed on:
- Toyota Crown 12 (S180) in 2004 – 2008;
- Toyota Mark X 1 (X120) in 2004 – 2009.
Disadvantages of the Toyota A750H gearbox
- This is a fairly rare gearbox, but it has no particular reliability problems;
- However, under aggressive driving its torque converter lockup clutch wears out quickly;
- This debris then clogs the valve body and jerking appears when shifting;
- And if you ignore it, the oil pump bushing is destroyed and leaks appear;
- It is also important to keep the cooling system clean, as this transmission dislikes overheating.
