REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz C-Class (W203, 2000 issue)

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Mercedes-Benz
	W203
		Introduction
		Instruction Manual
		Routine maintenance
		Engine
			Compression check in engine cylinders
			Checking the engine by means of the vacuum gauge
			Removal and installation of the engine compartment lid from the bottom
			4-cylinder petrol engines
			6-cylinder petrol engines
				Removal and installation of the cylinder head
				Replacing the timing chain and installing camshaft
				Removal and installation of the V-belt
			Diesel engines
			Engine lubrication system
		Cooling and heating
		The power supply system and release
		Electric motor
		Manual gearbox
		Automatic Transmission
		Coupling and power shafts
		Brakes
		Suspension and steering
		Body
		Onboard electric

printable version

6-cylinder petrol engines

The main elements of the motor 112 are shown in the illustrations. Applied 3 valves (two intake and exhaust 1) and 2 spark plugs per cylinder. A special device allows to disable the control valves to reduce fuel consumption (refer to the material of the Head of the Power supply system and release). The resonance intake manifold changes its length for each cylinder individually through electronically controlled dampers with servos.

6-cylinder gasoline engine 3.2 l (112)


1 - air intake hose 2 - circuit timing 3 - Oil Filter 4 - power steering fluid reservoir 5 - Crankshaft Pulley 6 - conditioner compressor 7 - meter air mass	8 - The fuel distribution pipe 9 - Injector 10 - ignition coil 11 - Spark Plug 12 - Exhaust manifold 13 - Sump

Elements of the engine 112

1 - The cylinder block
2 - The cylinder heads
3 - cylinder head gaskets
4 - head covers unit
5 - Gaskets head covers unit
6 - The intake valves
7 - The exhaust valves
8 - Valve levers
9 - Axis valve lever
10 - Upper Saddle valve spring
11 - the valve spring
12 - lower valve seat spring
13 - Rusks valve
14 - valve stem seals
15 - Supporting tube for planting stem seals
16 - valve tappets
17 - Valve seat
18 - Camshaft
19 - The front timing cover
20 - the camshaft sprocket
21 - the crankshaft sprocket
22 - an intermediate gear
23 - Timing Chain
24 - tensioner

25 - Shoe chain tensioner
26 - pacifier chains
27 - Piston Rings
28 - Piston
29 - pin sleeve rod
30 - Rod
31 - Inserts connecting rod bearings
32 - Front crankshaft oil seal
33 - Bearing Inserts
34 - Persistent half rings
35 - Crankshaft
36 - Rear crankshaft oil seal
37 - cover with crankshaft rear oil seal
38 - Vibration damper
39 - the crankshaft pulley
40 - Sump
41 - oil pump
42 - an asterisk of the oil pump
43 - The chain oil pump drive
44 - Lever tensioner
45 - Spring tensioner
46 - Finger
47 - Oil cooler

Air flows from inlet conduit 12 of variable geometry


22 - The control valve A - Receipt of the air in the open throttle B - Admission of air when the valve is closed	C - To the engine D - The air from the air filter

Management of inlet and outlet on petrol engines 112


12 - the Inlet pipeline 17 - Fuel pipe 19 - Exhaust manifold with air gap insulation	22 - Resonance flap R4 - Spark plugs (dual spark) Y62 - Injector

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Removal and installation of the V-belt

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Removal and installation of the cylinder head