Car gasoline engine V6 Mercedes 190 (W201)

Technical data
General Engine code - 103942 Working volume - 2597 cu. cm. Cylinder diameter - 82.9 mm Stroke - 80.2 mm Direction of rotation - Clockwise (when viewed from the front of...

Basic information
How to use this chapter This part of chapter 2 describes the repair work. which can be carried out without removing the engine from the vehicle. If the engine is removed...

Compression — checking and analyzing results
The procedure is similar to that described in Chapter 2 Part A for 4-cylinder petrol engine.

Engine and timing marks — basic information and use
1. Top dead center (TDC) is the highest point in the cylinder that each piston reaches in its stroke as the crankshaft rotates. Each piston reaches TDC at the end of the...

Camshaft cover — removal and installation
Removing Note: A new gasket may be required during installation. 1. Disconnect the negative battery terminal. 2. Raise the hood to the fully open position. 3. Unfasten...

Crankshaft pulley / vibration damper and hub — removal and installation
Crankshaft pulley / vibration damper Removing 1. Disconnect the negative battery terminal. 2. Where required, remove the engine shield from below as described in Chapter...

Camshaft drive chain covers — removal and installation
Top casing Note: Sealant required for installation, new camshaft timing chain case gasket (see text) and a new O-ring for the cooling tube. It is also recommended to...

Camshaft Drive Chain — Check and Replace
Examination 1. Remove the upper drive chain cover as described in paragraph 6 . 2. Using a socket wrench on the crankshaft pulley/damper hub bolt, turn the crankshaft to...

Camshaft timing chain tensioner, sprockets and guides
Tensioner Note: A new tensioner cover nut o-ring will be required during installation. Removing 1. Disconnect the negative battery terminal. 2. Raise the hood to the...

Asterisk of cams, pushers and camshaft — basic provisions, check and installation
Basic provisions 1. The timing gear is part of the camshaft bearing caps. The cams are mounted on separate short shafts that are seated in the camshaft bearing caps....

Cylinder head — removal, inspection and installation
Removing Note: This operation requires a hoist, winch and sliding hammer and adapter. Installation requires a new gasket. New cylinder head bolts may be required. 1....

Pallet — removal and installation
Removing Note: This operation requires a hoist and winch. Installation will require a new gasket and may require new exhaust clamp nuts. 1. Disconnect the negative...

Oil pump and drive chain — removal, inspection and installation
Oil pump Removing 1. Remove the drip tray as described in paragraph 11 . 2. Turn away a bolt of fastening of an asterisk of the pump and remove a washer. Remove the oil...

Flywheel / drive faceplate — removal, inspection and installation
The steps are the same as described in Chapter 2A for four cylinder petrol engines.

Oil cuffs — replacement
Front camshaft seal 1. Unfasten the radiator fan shroud and position it on top of the fan blades as described in Chapter 3 . 2. Where provided, remove the cap from the...

Crankshaft centering bearing — replacement
The steps are the same as described in Chapter 2A for four cylinder petrol engines.

Power unit supports — check and replace
The steps are the same as described in Chapter 2A for four cylinder petrol engines.