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

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Mercedes-Benz W123
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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
 


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Inspection and restoration of connecting rods and bearings



Defective bearing a large head of a rod can be determined by a knock on the housing and a decline in the level of pressure.

PERFORMANCE ORDER

  1. Inspect the connecting rod bearing surface pitting and scuffing. Replace the ear, where necessary, new of the same size. If the crankshaft has been reground - new connecting rod bearing inserts corresponding decrease in the size of the repair.
  2. Check each rod bending, twisting and make sure to match the diameter of the stud.
  3. Place the connecting rods assembled with inserts on the respective crank pins and tighten the bearing cap bolts to the specified torque. Check the radial offset for compliance with technical data. If radial Offset too high, replace the connecting rod bearings with new ones.
  4. To remove the piston rod, remove the snap ring from both ends of the piston pin and knock him out of the connecting rod small end. Heat pistons follows as piston pins mounted therein on a floating dock.
  5. If necessary, replace the sleeve connecting rod small end and piston pin. The difference in weight of any of the six pairs of rods should not exceed 5.0 g
  6. Insert the plunger into a position in which the needle on its bottom facing forward, and the foot pads are directed to the left side of the engine.




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Inspection and restoration of the crankshaft and bearings
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Inspection and restoration of pistons and piston rings

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