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W123 (1976-1985) W124 (1984-1995) W210 (1996-2002)
  • Main
  • E-Class
  • W123 (1976-1985)
  • Power unit
  • Repair M110 and M123 engines
  • Removal engines M110 and M123

Removal engines M110 and M123 (Mercedes-Benz E-Class W123)

0

Exhaust system (EG)



Above are carburetor engines

Above are carburetor engines
below are the fuel injected engines

1 - intake pipe; 2, 4 - central muffler; 3 - rear muffler; 5 - catalytic converter; 6 - bracket for mounting the inlet pipe to the gearbox; 7 - gasket; 8 - clamps


Removal engines



The engine can be removed from the vehicle separately or as part of the power unit. The total weight of both the engine and the power unit is quite significant. It is recommended to remove the engine separately using a hoist and an assistant.

Engine Wire Harness Connector

Engine Wire Harness Connector


Connecting the upper hose to the thermostat housing

Connecting the upper hose to the thermostat housing




Disconnecting the oil pressure line

Disconnecting the oil pressure line


Engine mount damper

Engine mount damper


Location of the motor ground jumper

Location of the motor ground jumper


Unscrewing the upper gearbox and transmission bolts using a socket head with an extension

Unscrewing the upper gearbox and transmission bolts using a socket head with an extension




Removing the engine mount through bolts

Removing the engine mount through bolts


Removing the engine

Removing the engine


1. Secure the hood in a vertical position or remove it completely.

2. Disconnect the negative terminal from the battery.

3. Drain the coolant.

4. Remove the radiator and cooling fan.

5. Remove the air conditioning compressor mount, move it to the side and secure it.

6. Disconnect the hoses from the power steering pump and close the channels with plugs.

7. Remove the air cleaner and disconnect the carburetor throttle control rods and, where necessary, the injection system components.

8. Mark and record (write down) the installation locations of all electrical connectors removed from the engine.

9. Disconnect the heater hoses, remaining coolant hoses and all vacuum hoses.



10. Disconnect the fuel hoses and the oil delivery line.

11. Apply the parking brake, raise the front of the vehicle and place it on stands.

12. On models equipped with an automatic transmission (AT), drain the fluid (oil) and disconnect the oil dipstick tube from the intake manifold. Disconnect the pipes from the oil cooler and remove their fastening elements on the power unit. Unscrew the bolts of the front transmission cover and fastening of the drive disk to the torque converter. Install two bolts on the top of the cover.

13. Disconnect the ground wire and unscrew the nuts from the shock absorbers on the front crossmember.

14. Remove the exhaust system.

15. Remove the starter.

16. Place a support under the gearbox. Remove the rear crossmember mounting bolts from the underbody and lower the unit slightly. Remove all transmission-to-engine mounting bolts using socket wrenches with extensions from the rear to gain access to the upper bolts. With all bolts removed, install the rear crossmember on the underbody.

17. Using an Allen key, loosen the lower mounting bolts. If the bolts are sticking, remove the engine mount from the body along with the shield.

18. Slightly raise the front of the engine with chains from a hoist attached to the engine mounts.

19. Remove the engine from the supports and move it forward (the front of the engine is raised) before disconnecting the primary (drive) shaft of the gearbox (or from a torque converter). On models with automatic transmission, pay attention to the connection of the oil pump to the torque converter.

20. Remove the engine from the engine compartment, being careful not to touch the surrounding elements. Secure the gearbox to the body.
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The article has been verified: Levin Kirill Glebovich
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E-Class W123 / Repair M110 and M123 engines
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Checking and adjusting clearances in the valve drive mechanism on M123 and M110 engines
Removal the cylinder head
Removal the camshaft
Disassembling the cylinder head
Replacing the camshaft chain
Removal the intermediate sprocket and shaft
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W210 (1996-2002) 
  • General information
  • Vehicle description
  • Working conditions and tools
  • Car care
  • Diesel engines
  • Engine repair
  • Lubrication system
  • Cooling system
  • Injection system
  • Supply system
  • Exhaust system
  • Gasoline engines
  • Engine repair
  • Lubrication system
  • Cooling system
  • Control system
  • Power and exhaust system
  • Transmission
  • Clutch
  • Mechanical gearbox
  • Automatic gearbox
  • Drive shafts
  • Chassis
  • Car suspension
  • Steering
  • Tires and wheels
  • Brake system
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Doors and windows
  • Heating and ventilation
  • Electrical equipment
  • Equipment and devices
  • Power devices
  • Lighting and signaling
  • Electrical circuits
W124 (1984-1995) 
  • General information
  • Governing bodies
  • Driving and operation
  • Weekly care
  • Maintenance (gasoline)
  • Maintenance (diesel)
  • Troubleshooting
  • Power unit
  • I4 petrol engine
  • V6 petrol engine (SOHC)
  • V6 petrol engine (DOHC)
  • Diesel engines
  • Engine overhaul
  • Cooling system
  • Heating and ventilation
  • Fuel system (carburetor)
  • Injection system «Bosch CIS-E»
  • Injection system «Bosch HFM»
  • Diesel fuel system
  • Supply system
  • Starting and charging system
  • Ignition system (I4)
  • Ignition system (V6)
  • Preheating
  • Transmission
  • Clutch
  • Mechanical gearbox
  • Automatic gearbox
  • Drive shafts
  • Chassis
  • Brake system
  • Car suspension
  • Steering
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Doors, locks and windows
  • Electrical equipment
  • Equipment and devices
  • Switches
  • Headlights and lighting
  • Electrical circuits
W123 (1976-1985) 
  • General information
  • Introduction to the guide
  • Power unit
  • Engine device
  • Repair M102 engines
  • Repair M110 and M123 engines
  • Cooling and lubrication (M102)
  • Cooling (M110 and M123)
  • Ignition system
  • Power system «Stromberg»
  • Power system «Solex 4A1»
  • Fuel injection «K-Jetronic»
  • Fuel injection «L-Jetronic»
  • Transmission
  • Clutch
  • Mechanical gearbox
  • Automatic gearbox
  • Cardan and rear axle
  • Chassis
  • Front suspension
  • Rear suspension
  • Steering
  • Brake system
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Doors, locks and windows
  • Electrical equipment
  • Equipment and devices
  • Power devices
  • Electrical circuits
 
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