V6 petrol engine (DOHC) Mercedes E-Class (W124)

Engine Specifications
The DOHC engine is an engine with two camshafts installed in the cylinder head. Engine code: – engine 2.8 l 104,942 – engine 3.0 l 104,980 – engine 3.2 l 104,992 Working...

General engine data
Engine with six cylinders in line with two camshafts mounted in the cylinder head. Each camshaft only controls the intake or exhaust valves. The crankshaft is supported...

Repair operations on the engine installed in the car
The following operations can be performed without removing the engine from the vehicle: removal and installation of the cylinder head; removal and installation of the...

Top dead center (TDC) of the piston of the first cylinder
Using a 4 mm drill to check the correct installation of the camshaft Piston top dead center is the point through which each piston passes as the crankshaft rotates. Each...

Cylinder head cover — removal and installation
Models with cis fuel system Removing Removing the ignition distributor housing on models with a CIS fuel injection system Unscrewing the screws securing the spark plug...

Crankshaft pulley/vibration damper and hub
Several modifications of crankshaft pulleys / vibration dampers and hubs are installed on engines. Early models installed the crankshaft pulley/vibration damper and hub...

Drive chain covers — removal and installation
Attention! Sealant and new gaskets must be used when installing the drive chain top cover. Removing Unscrewing the bolts of the ignition distributor cover on models with...

Upper Timing Chain Cover (Models with HFM Fuel Injection System)
Attention! An inertial hammer must be used to remove the chain guide locating pin. Sealant and new gaskets must be used when installing the drive chain top cover....

Lower drive chain cover — removal and installation
Attention! When installing the bottom cover, sealant and a new O-ring for the coolant pipe must be used. It is also advisable to replace the front crankshaft O-ring....

Checking and replacing the drive chain
Examination 1. Remove the top drive chain cover. 2. Remove the cylinder head cover. 3. For the crankshaft pulley bolt, turn the engine crankshaft and check the condition...

Drive chain tensioner
Attention! When installing the tensioner cap nut, a new O-ring must be used. Installing a new chain When installing a new chain, keep the chain legs in a constantly taut...

Camshaft and crankshaft sprocket
Exhaust camshaft sprocket Removing Unscrewing the bolts of the camshaft sprocket Removing the sprocket from the camshaft that controls the exhaust valves 1. Remove the...

Chain guides — removal, inspection and installation
Upper drive chain guide Removing Removing the upper drive chain damper from the dowel pins 1. Remove the cylinder head cover. 2. Remove the drive chain tensioner. 3....

Tensioner shoe — removal, inspection and installation
Removing Removing the shoe of the drive chain tensioner 1. Set the piston of the first cylinder to TDC and check that all the alignment marks are aligned with the...

Camshaft adjustment mechanism
Removing Unscrewing the camshaft bearing bolt Removing the bearing from the camshaft Unscrewing the nut from the front end of the camshaft Removing the washer from the...

Camshafts and tappets — removal, inspection and installation
Removing Marking location on the camshaft bearing cap The location of the camshaft bearing caps to be unscrewed and removed first Arrangement of persistent half rings...

Checking and adjusting the position of the camshafts
Examination 1. Remove the cylinder head cover and radiator fan shroud. 2. Set the piston of the first cylinder to TDC and check that all the alignment marks are aligned...

Cylinder head — removal and installation
Attention! A lifting mechanism must be used to remove the cylinder head. When installing the cylinder head, a new head gasket and a new intake camshaft bearing bolt must...

Oil pan — removal and installation
Removing The location of the lower bolt of the engine mount Arrangement of bolts of fastening of a pipe of an oil radiator to the oil pallet 1. Remove the ground wire...

Oil pump chain and drive — removal, inspection and installation
Oil pump Removing Unscrewing the bolt securing the oil pickup tube to the bracket Unscrewing the bolt securing the oil catcher plate The location of the bolts securing...

Replacement of O-rings
Removing the gasket from the drive plate Removing the Drive Plate on Automatic Transmission Models Measuring Drive Plate Bolt Length O-ring for exhaust camshaft on...

Oil cooler — removal and installation
Removing Removing the oil cooler bracket from the bracket Removing the bracket together with the oil cooler from under the wheel arch Removing the oil cooler bracket...