The 5-speed automatic transmission Mercedes 722.5 began to be installed in 1990, but only on the Gelendvagen SUV, and other models of the concern received it four years later. The transmission is the first automatic transmission with so many gears and electronic control.
This series includes: 722.3, 722.4, 722.5, 722.6, 722.7, 722.9, 725.0.
Specifications
Production years | since 1990 |
Type | automatic transmission |
Number of gears | 5 |
Type of drive | all wheel / rear |
Engine volume, l | up to 6.0 |
Torque output, Nm | up to 580 |
Recommended oil | DEXRON III or VI |
Oil capacity, liter | 8.5 |
Replacing the oil | every 50,000 km |
Replacing the filter | every 50,000 km |
Gearbox lifespan, km | ~300 000 |
Gear ratios Mercedes 722.5
Using the example of a Mercedes E-Class 1994 with a 3.2 liter engine:
Main | 3.690 |
1st | 3.871 |
2nd | 2.247 |
3rd | 1.436 |
4th | 1.000 |
5th | 0.750 |
Reverse | 5.586 |
The transmission was installed on:
- Mercedes G-Class W463 in 1990 – 1997;
- Mercedes E-Class W124 in 1994 – 1997;
- Mercedes S-Class W140 in 1994 – 1998;
- Mercedes SL-Class R129 in 1994 – 1998.
Disadvantages of the Mercedes 722.5 gearbox
- Quite a lot of calls to service stations regarding sudden failure of fifth gear.
- A drop in lubricant level leads to intense wear of the oil pump bushing.
- The entire Reverse package, in which the springs fall apart, is regularly replaced.
- The weak points of this transmission also include the vacuum modulator.