Removal
The gearbox is removed from the engine compartment together with the engine.
1. Lower the engine on the front beam (see the relevant chapter).
Attention! To lift the engine, three chains must be passed through the right and left sides of the engine and oil pan. The chains must be positioned as vertically as possible, which is possible with the help of an appropriate frame (see illustration 1.0a).
2. Raise the power unit with a suitable overhead crane to relieve the load on the suspension supports.
3. Unscrew bolts 1 and 2 (see illustration).
1.3 Unscrew bolts 1 and 2
3 - intermediate shaft support/bearing mounting bolt
4 - intermediate shaft support/bearing
5 - right drive shaft
6 - left drive shaft
7 - engine and gearbox mounting bolt
8- centering bushings
9 - catalytic converter bracket
10 - catalytic converter bracket mounting bolt
11 - starter mounting bolt
12 - ground wire (-)
13 - gearbox support mounting bolt
14 - gearbox support
15 - gearbox
16 - engine
17 - front beam of the power unit suspension
M1 - starter
4. Using a suitable screwdriver, pry the tail of the left half-shaft 6 out of the gearbox (see illustration 1.3).
5. Unscrew bolts 3 securing the support/support bearing 4 of the intermediate shaft to the cylinder block (see illustration 1.3).
6. Using a suitable screwdriver, pry the tailstock of the intermediate shaft 5 of the right half-shaft out of the gearbox (see illustration 1.3).
7. Carefully lift engine 16 together with gearbox 15 and remove them from the front beam 17, carefully removing the tailpieces of the left half-axle, as well as the intermediate shaft from the gearbox (see illustration 1.3). Check the condition of the drive shaft retaining rings and replace them with new ones if damaged.
8. Unscrew bolts 10 securing bracket 9 of the catalytic converter to the gearbox (see illustration 1.3).
9. Disconnect wire 12 "ground" (-) from support 14 of the gearbox (see illustration 1.3).
10. Unscrew bolts 13 and disconnect support 14 (see illustration 1.3).
11. Unscrew bolts 11 and remove starter M1 (see illustration 1.3)
12. Unscrew bolts 7 and separate engine 16 and gearbox 15 (see illustration 1.3).
Caution! Do not lose the centering bushings 8 (see illustration 1.3). Before connecting the power unit, make sure the centering bushings are in place.
[Material borrowed from an online resource www.mercedesman.ru]
13. Check the transmission oil level in the gearbox. The oil level in the gearbox is normal if it is level with the lower edge of the filler hole.
Attention! If the filler and drain plugs were unscrewed, lubricate them with sealant when installing them.
14. Cars with automatic clutch. Read the codes of possible malfunctions of the automatic clutch by contacting the workshop.
The gearbox is installed in the reverse order of removal.