REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz E-Class W123 (from 1976 to 1985, the year of issue)

general info. full specifications. diagnostics. hints. tips. tricks

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Mercedes-Benz
	W123
		Introduction
		Gasoline engines
			Design and specifications
			Engine adjustment
			Ignition system
			Power system
			The fuel injection system K-Jetronic
			The fuel injection system L-Jetronic
			Works by car
			Work on the engine M 102
			Work on the engine M 110 and M 123
				Removing the engine M 110 and M 123
				Removing the cylinder head
				Removing the camshaft
				Dismantling of a head of cylinders
				Replacing the chain camshaft
				Removing the intermediate shaft and sprocket
				Removing the flywheel (a leading disk)
				Replacement of a forward epiploon of a cranked shaft
				Removal of the oil pump
				Removing the rods and pistons
				Removing the crankshaft and main bearings
				Changing the oil filter
				Replacing the engine mount
				Description Service and crankcase ventilation system
				General information on inspection and recovery engine
					Inspection and restoration of the crankshaft and bearings
					Inspection and restoration of connecting rods and bearings
					Inspection and restoration of pistons and piston rings
					Inspection and restoration of the cylinder block
					Inspection and restoration of details of the distribution mechanism
					Inspection and restoration of the flywheel (a leading disk) and flywheel
					Inspection and recovery of the oil pump
					Removal of sludge, grinding valves and restoration of cylinder heads
				Build Engine
				Assembling the cylinder head
				Installing the cylinder head
				Installing the cylinder head
				Cooling system
				Removing and installing intake manifold and exhaust manifold
		Coupling
		Manual transmission
		Automatic Transmission
		Driveline and rear axle
		The front suspension
		Rear suspension
		A steering
		Brakes
		Electrical
		Body and Equipment

printable version

Inspection and restoration of details of the distribution mechanism

PERFORMANCE ORDER

Check for burrs on the necks of a camshaft and measure them with a micrometer at several locations to identify cone or oval.
Inspect the surface of the bearing housings and racks - there are no signs of wear on them in the form of grooves or burrs.
Where there were found the above defects, replace the camshaft and its rack or enclosure.
Replace camshaft if cam lobe excessively worn, with simultaneous replacement of cam follower.
Examine a star (asterisk) camshaft, crankshaft sprocket, intermediate shaft and sprocket drive gear and the distribution of the oil pump and replace them in case of excessive wear.
Rinse the camshaft chain with kerosene and check for wear. Place a support under both ends of the chain rollers to fully upright. A worn chain would severely sag while unworn slightly sag in the middle.
Check the direction of the chain tensioner and the wear and replace them if necessary.
Check clogging of oil pipes inlets camshaft and the engine M 110 check for wear on the distributor drive gear.

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Inspection and restoration of the cylinder block

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Inspection and restoration of the flywheel (a leading disk) and flywheel