REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz C-Class (from 1993 to 2000, the year of issue)

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Mercedes-Benz
	C-class
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				Introduction
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				The bottom cover of the engine compartment
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				Chain tensioner
				Camshaft
					The engine capacity of 2.0 liters
					The engine capacity of 2.2 / 2.5 L
				Cylinder Head
				Valve stem seals
				Cylinder head cover (2,2 / 2,5)
				Hydraulic bucket tappets
				Valves
				Valve guide
				Valve seats in the cylinder head
				The cylinder head and engine block
				Compression
				V-ribbed belt
				Tensioned V-ribbed belt device
				Fault diagnosis (DD)
		Lubrication system
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		Ignition system
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		Electrical

printable version

The engine capacity of 2.2 / 2.5 L

The camshafts are located in a separate housing in the cylinder head. Located opposite each other bearings intake and exhaust camshafts have a common cover that covers both camshafts. Thus, both camshafts are always dealt with together.

Withdrawal

Bolts camshafts

PERFORMANCE ORDER

1. Remove the cylinder head cover.
	2. Set the first cylinder in the ignition TDC. To do this, move the transmission to idle and turn the crankshaft clockwise with a star attached central bolt pulley on the crankshaft. Rotate the crankshaft until the mark is "ON" on the belt pulley will not be under the pointer (arrow).
A warning Do not turn the engine back. In no case did not turn the shaft of the bolt of the distributor gear.
	3. In this position, insert the locking pin or other suitable rod with a diameter of 6.75 mm into the opening of the intake camshaft gear (2) through the cover of the first camshaft bearing or rotate the crankshaft one full turn and insert the pin.
4. Mark the position with respect to each other's distribution gear and control circuit with the help of polish or graver, pre-wiping cloth is a place on the gear chain.
5. Remove the chain tensioner.
6. Unscrew the bolts and remove the exhaust camshaft gear. To loosen the bolts need a key with the end nozzle size T40. A warning The control circuit must remain in engagement with the pinions of the crankshaft and a fuel pump. Otherwise, change the valve timing, which may cause malfunction in the engine.
7. Put the control circuit to the side and attach the wire to the cylinder head.
8. Number the order of the camshaft bearing caps to the subsequent installation to install them to their original location.
9. The 2.5-liter engine: Unscrew the camshaft bearing caps. A warning The camshafts are very fragile. To avoid damaging them, strictly observe the sequence of disassembly, first loosen all of the bolts bearing 1, 3, 4 and 6 (arrows). Then loosen the screws alternately on both bearing caps 2 and 5 (respectively 1/2 turn) until there is no opposition (see. Fig. Bolts camshafts).
10. The engine capacity of 2.2 liters: first unscrew the bearing caps 1, 3 and 5. Then gradually loosen the bolts bearing caps 2 and 4 (or 1/2 turn) until there is no resistance.
11. If necessary, remove the bucket tappets and check for external damage (scratches), replace if necessary. For pulling the pusher used in the workshop siphon ejector which in the home can be made of the sucker wall hook.

Setting

A warning

When replacing the camshaft using a shaft with the same index. The index is stamped near the middle bearing.

PERFORMANCE ORDER

1. Clean camshaft and bearing caps with benzine and lubricate with engine oil. If dismantled tappets, lubricate them with oil and set in the cylinder head in the same position as before dismantling.
	2. Check the washer for axial location of the camshaft grooves in the middle of the bearing, replace if necessary.
	3. Grease camshafts engine oil and insert into the cylinder head, wherein both openings (3) (d = 1.5 mm) should be in the timing gears opposed to each other. This position can be set and the rod.
4. Install the camshaft bearing caps in accordance with their numbering and evenly, in reverse order of removal, tighten to a torque of 15 Nm
5. Insert the flange of the intake camshaft rod.
6. Install the camshaft sprocket overlaid with the chain on the exhaust camshaft and tighten the new bolts to 20 Nm Labels applied to the control circuit and sprocket must match. A warning Remove the core from the sprocket.
7. Install the chain tensioner with a new seal.
8. Install the cylinder head cover and the engine Complement.

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The engine capacity of 2.0 liters

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Cylinder Head