2. Remove the nut securing the ground cable to the hood stud.
Tightening torque 9 Nm.
3. Remove the ground cable from the stud.
4. Pick up two M6 bolts 19 mm long, two nuts and two flat washers.
5. Remove the hood strut retainer (1) on the rack bracket stud.
6. Remove the post from the stud.
7. Remove covers (2) air intakes, to do this, lift the cover until the clips disengage (the figure shows the left cover, the right one is similar).
8. Ask an assistant to support the hood.
9. Turn away bolts (3) hood hinges. Tightening torque 25 Nm.
10. Raise the hood so that the notch (1) the service position of the hood is at the top of the hinge.
11. Install the MB bolts into the recesses of the service position and tighten the nuts by hand.
12. Lower the hood until the bolts stop at the bottom of the hinge. Tighten the nuts to secure the hood.
13. Now the hood is in the service position.
14. Remove the hood latch.
15. Disconnect the front end of the top tie.
16. Remove the intake manifold.
17. Release from the top hose clip (3) radiator vent hose (2).
18. Remove the clamp (1) attaching the ventilation hose to the air outlet pipe of the cooling system.
19. Remove the ventilation hose from the tube and lay it aside.
20. Remove the clamp (3) upper radiator hose.
21. Remove the upper radiator hose from the engine branch pipe.
22. Remove a collar of fastening of the bottom hose of a radiator to a branch pipe of the pump of a cooling liquid.
23. Remove the lower radiator hose from the coolant pump fitting.
24. Remove heater hoses.
25. Disconnect the connector (1) oil pressure sensor.
26. Disconnect the connector (2) oil collector.
27. Loosen the bolt securing the grounding cable at the rear of the head of the left semi-block, lay the cable aside.
Tightening torque 16 Nm.
28. Remove the pin (1) fastening the cable of the negative terminal of the battery to the head of the right half-block.
Tightening torque 25 Nm.
29. Remove cable (2) battery and ground cable (3) from the head of the right semi-block.
30. Raise the car and place the safety struts under the frame.
31. Remove clip (1) engine wire harness support.
32. Remove the pin (2) grounding cables. Tightening torque 16 Nm.
33. Remove ground cables (3) from the engine block.
34. Disconnect the connector (4) knock sensor.
35. If installed, unscrew the bolt securing the automatic transmission fluid cooler tube support clip to the oil pan.
Tightening torque 9 Nm.
36. Disconnect the connector (1) camshaft position sensor wire harness.
37. Remove the bolt (2) battery cable channel. Tightening torque 12 Nm.
38. Pull out your finger (3) channel from the oil pan.
39. Disconnect the connector (1) pressure sensor in the air conditioning system.
40. Remove the starter.
41. Disconnect the connector (1) crankshaft position sensor.
42. Disconnect the connector (2) knock sensor.
43. Disconnect the connector (4) oil level sensor.
44. Remove clip (3) supporting the engine wire bundle from the bracket for the automatic transmission fluid cooler tubes.
45. If installed, disconnect the water heater wires from the heater.
46. Lower the car.
47. Turn away a back bolt of fastening of the pump of the amplifier of a steering to the block of the engine. Tightening torque 50 Nm.
48. Turn away bolts of fastening of an arm of the generator. Tightening torque 50 Nm.
49. Move the generator bracket (along with power steering pump) to the side.
50. Remove the ignition coil to properly install the engine lift hook.
51. Turn away a nut of fastening of a tube of a dipstick of level of working liquid of automatic transmission.
52. Remove the automatic transmission fluid level dipstick tube.
53. Install the engine lifting hook on the cylinder heads. Tighten the mounting bolts. Tightening torque: bolt M8 25 Nm; bolt M10 50 Nm.
54. Remove the bolts (1) fastening the left and right engine mounts to the frame.
Tightening torque 65 Nm.
Note: When installing, tighten the center bolt first, then the side bolts.
56. Turn away bolts of fastening of the screen of the engine, remove the screen.
Tightening torque 20 Nm.
57. Turn away bolts of fastening of protection of the engine, remove protection.
Tightening torque 28 Nm.
58. Place a container under the drain plug of the oil pan to collect the oil.
59. Remove the drain plug (430). Drain the oil and replace the plug.
Tightening torque 25 Nm.
60. Remove the catalytic converter.
61. Turn away bolts of fastening of the hydrotransformer to the coupling of a drive.
Tightening torque 60 Nm.
62. Turn away a nut of fastening of an arm of a tube of the accumulator of vapors of fuel to a case of automatic transmission.
Tightening torque 20 Nm.
63. Remove the bracket from the stud and move the bracket aside.
64. On automatic transmission 4L80-E, unscrew the nut (1) transfer case ventilation hose bracket
65. On automatic transmission 4L60-E / 4L70-E / 6L80-E, unscrew the nut (2) transfer case ventilation hose bracket. Tightening torque 20 Nm.
66. Set the transfer box ventilation bracket and hose aside.
67. Unscrew the fasteners of the automatic transmission to the engine.
Shown automatic transmission 4L60-E/4L70
68. Lower the car.
69. Connect the engine hoist hooks to the hoist arms.
70. Put a temporary support under the automatic transmission (jack).
71. Remove the engine from the car.
72. Secure the torque converter with a special clamp to prevent the torque converter from falling.
73. Install the engine on a disassembly stand.
74. Installation is carried out in the reverse order.
Attention
After repair, the engine must be tested, for this, after installation on the car, perform the following operations:
- Perform engine prelubrication.
- Carry out the procedure "learning" variable valve timing systems (models since 2007 release).
- Switch off the ignition system.
- Crank the engine by hand a few times, listen for unusual noises.
- Turn on the ignition system.
- Start the engine, listen for unusual noises.
- Check oil pressure.
- Bring the engine to 1000 rpm and warm it up to operating temperature.
- Listen to the noise of the valve mechanism.
- Check the engine for fluid leaks.
- Adjust oil and coolant levels.