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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 pistons and piston rings



PERFORMANCE ORDER

  1. If the pistons are set back to the engine, carefully remove the piston rings, each of them apart just enough to remove the bridge between the grooves through the body of the piston.
  2. To prevent falling rings in a groove positioned above, it is recommended to insert two or three narrow strips of tin (old plate probe) under the ring at equal distances from each other, and then ring twisted together with the piston.
  3. Clean the grooves and rings of a deposit so as not to scratch the aluminum surface of the piston.
  4. If you install new rings, the top compression ring must have a stepped shape to avoid it hitting the "wear ring", which was formed at the top of the cylinder bore.
  5. Before final installation of rings on the pistons, measure the end gap rings. These clearances must conform to the technical requirements.
  6. Test the probe backlash rings on compliance. If the gap is too large, replace the piston, as its groove worn in height.
  7. Set the rings and expand their locks evenly around the circumference of the piston (120 ?�).




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Inspection and restoration of connecting rods and bearings
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Inspection and restoration of the cylinder block

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