Engine design and adjustment Mercedes E-Class (W123)

General information about engines
General information Four-stroke, four- or six-cylinder, in-line engine is mounted along the axis of the car vertically or with a longitudinal inclination at an angle of...

Design and specification of the cylinder head
Aluminum alloy cylinder head, valve seats and valve guides are plug-in. Characteristic Meaning Cylinder head height, mm M 115 nominal 84,8—85,0 minimal 83,8 M 102...

Design and specification of valves
Valves Characteristic Meaning Eccentricity of valve stems relative to the working chamfer, no more than, mm 0,03 Chamfer angle 45° + 15' Minimum height of the valve head...

The design and specification of the cylinder block
The cylinder block is cast from special cast iron and is integral with the cylinders. Characteristic Meaning Cylinder block height, mm M 102 nominal 292,45—292,55...

The design and specification of the crank mechanism
Pistons Aluminum alloy piston with flat bottom. On the bottom of the piston there is a mark for the piston diameter and an arrow for orienting the piston when it is...

The design and specification of the gas distribution mechanism
Overhead drive (SOHC and DOHC) camshafts are carried out single-row (engines M 102, M 123) or double row (engines M 110 and M 115) chain. Chain tension is adjusted by a...

Design and specification of the engine lubrication system
A pressurized lubrication system, generated by an internal gear pump with an eccentric rotor, lubricates the crankshaft, upper ends of the connecting rods and camshaft...

Design and specification of the cooling system
The liquid cooling system includes a radiator, an expansion tank, a centrifugal water pump and a thermostat. Water pump The water pump is installed on the right side of...

Design and specification of the power system
Fuel tank The tank is stamped from steel sheet and is located above the rear axle. The fuel reserve warning lamp comes on when the fuel tank has less than 9.5 (11,5) l...

Design and specification of carburetor engines
Fuel pump The mechanical fuel pump is driven by the intermediate shaft eccentric. Characteristic Meaning Vacuum pressure when the starter is turned on, kg/cm 2...

Design and Specification of the Fuel Injection System
K-Jetronic fuel injection system On car models «230» And «280» installed a mechanical fuel injection system «K-Jetronic» Bosch company. The principle of operation of the...

Design and specification of the ignition system
Ignition system of classical type, battery. Includes distributor, coil, spark plugs, power supply, high and low voltage wires. From model year 1978 on models «230E» And...