Preparing to remove the 111 series engine (1 of 4)
Preparing to remove the 111 series engine (2 of 4)
Preparing to remove the 111 series engine (3 of 4)
Preparing to remove the 111 series engine (4 of 4)
1. Illustrative material on preparation for engine removal is presented in the accompanying illustrations, to which all references in the text refer.
2. Disconnect the negative cable from the battery.
3. Drain the cooling system (see Chapter Coolant Replacement - General Notes).
4. Remove the cooling system fan assembly (3 - impeller with viscous coupling) (See Chapter Cooling, heating and air conditioning systems).
5. Remove the cooling fan shroud (2) (see Chapter Cooling, heating and air conditioning systems).
6. Install the radiator/condenser protection screen.
7. Remove the air cleaner assembly (1).
8. Remove the accessory drive belt (4) (see Chapter Engine).
9. Disconnect the throttle actuator rod (5).
10. Disconnect the brake booster vacuum lines (7) and the regeneration line (6).
11. Disconnect the fuel line (9).
12. Remove the expansion tank (8).
13. Disconnect the cooling system hoses (10, 11, 12, 13 and 14)
14. Disconnect the engine wiring connector(s).
15. Remove the steering pump (26).
16. Remove the upper transmission dome mounting bolts from the engine.
17. Remove the starter (see Chapter Engine electrical systems).
18. Remove the exhaust pipe (16) from the exhaust manifold.
19. Unbolt the bracket (15) from the intake pipe.
20. Remove the bolts securing the exhaust system support bracket (17) to the transmission housing.
21. Unbolt the K/V compressor (25) and, without disconnecting the refrigeration lines, move the assembly to the side and secure it by tying it with wire.
22. Unbolt the right and left front supports of the power unit suspension (23).23 Connect the chains (38) of the lift to the rigging eyes of the power unit.
23. Suspend the engine on a winch and support the transmission assembly (21) from below.
24. Remove the right powertrain suspension support (23).
25. Remove the remaining bolts securing the transmission dome to the engine.
26. Carefully separate the engine from the transmission, lift it up and remove it from the engine compartment.
27. Installation is carried out in reverse order.
M112/113
Preparing for engine removal of series 112 and 113 (using engine 112.942 as an example - 1 of 5)
Preparing for engine removal of series 112 and 113 (using engine 112.942 as an example - 2 out of 5)
Preparing for engine removal of series 112 and 113 (using engine 112.942 as an example - 3 out of 5)
Preparing for engine removal of series 112 and 113 (using engine 112.942 as an example - 4 out of 5)
Preparing for engine removal of series 112 and 113 (using engine 112.942 as an example - 5 out of 5)
1. Illustrative material on preparation for engine removal is presented in the illustrations, to which all references found in the text refer.
2. Remove the power unit cover.
3. Make sure that the engine lifting eyes are installed correctly - the rear eyes have a reinforced design.
4. Disconnect the negative cable from the battery.
5. Remove the air deflector (23) - only models equipped with engine 113.942.
6. Disconnect the hose (16) and drain the coolant from the radiator.
7. Drain the engine oil (see Chapter Changing engine oil and oil filter).
8. Remove the cooling system fan assembly with viscous coupling (1), - except for models equipped with engines 113.981 and 113.965.
Note: The threads are right-handed.
9. Remove the fan shroud (2),
10. On models equipped with engines 113.981 and 113.965, remove the electric cooling fan.
11. Install the radiator/condenser protection screen.
12. Remove the expansion tank (1).
13. Remove the air cleaner assembly (7).
14. Remove the resonator chamber (9) with the connecting sleeve (8) (see Chapter Removal and installation air intake tract components).
15. Disconnect the connecting hose (15) from the water pump.
16. Remove the hose (17) running from the radiator to the thermostat housing.
17. On models equipped with 113 series engines, remove the radiator (see Chapter Cooling, heating and air conditioning systems).
18. Disconnect the vacuum line (5) connecting the brake booster servo to the rear of the intake manifold.
19. Pump out the oil from the steering pump (19).
20. Disconnect the pressure and return lines from the steering pump assembly (19) - immediately plug the open ends of the lines to prevent dirt from entering the hydraulic system.
21. Disconnect the vacuum line (6) of the regeneration tract from the inlet pipe.
22. Disconnect the fuel line (4).
23. Remove the cooling tract line (14).
24. Remove the accessory drive belt (3) (see Chapter Engine).
25. Disconnect the electrical wiring from the A/C compressor (10).
26. Unscrew the fasteners and disconnect the K/V compressor (10) from the timing drive cover.
(Full article available on the resource: Mercedesman.ru)
27. Remove the left front wheel arch protection liner (24) (models with 113 series engines).
28. Remove the deflector (25) (models with 113 series engines).
29. Disconnect the exhaust system inlet pipes (11) from the exhaust manifolds.
30. Disconnect the exhaust system support bracket (12).
31. Unbolt the rotation converter (20) from the engine starter ring gear (21).
32. Disconnect the electrical wiring connectors of the left and right pre-catalytic lambda probes (G3/3x1 and G3/4x1) on the transmission housing.
33. Remove the starter mounting bolts - do not disconnect the electrical wiring.
34. Loosen the transmission dome mounting bolts to the engine, remove all bolts except the two upper ones (112 series engines)/lower (113 series engines).
35. Loosen the nuts of the powertrain suspension supports (18).
36. On models with automatic transmission, unscrew the oil filler pipe on the right cylinder head.
37. Connect the winch chains to the engine rigging eyes.
38. Suspend the engine and support the transmission (22).
39. Remove the remaining two transmission-to-engine mounting bolts and carefully remove the latter from the vehicle's engine compartment.
40. Installation is carried out in reverse order.