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W116 (1972-1980, petrol) W126 (1979-1991, petrol) W140 (1991-1998) W220 (1998-2005)
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  • W140 (1991-1998)
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  • Replacing valve seats

Replacing valve seats (Mercedes-Benz S-Class W140)

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Contents: Processing ↡ Replacing the valve seat ↡
Milling and grinding of valve seats

Milling and grinding of valve seats


Processing



1. Remove the valves.

2. Check the valve guides.

3. Grind the valve seats.

4. Check the valves for leaks.

5. Measure the valve seat chamfer width. Valve seat chamfer dimensions are given in Specifications.

Replacing the valve seat



Valve seat installation details

Valve seat installation details


Dimensional characteristics are given in Specifications.
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The article has been verified: Polyakov Zakhar Grigorievich
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S-Class W140 / Diesel engine OM606
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Removal, inspection and installation of valve guide bushings
Checking the condition of the valves
Timing Drive — General Information, Component Maintenance
Timing Chain Tensioner — Installation Details
Removal and installation the timing chain cover
Removal and installation pistons
Removal and installation piston rings
Removal, condition check and installation of connecting rods
Measuring cylinder diameters
Checking the condition of the crankshaft, replacing the seals
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W220 (1998-2005) 
  • General information
  • Introduction to guide
  • User manual
  • Maintenance
  • Power unit
  • Engine repair
  • Cooling and heating systems
  • Power and exhaust systems
  • Ignition and control system
  • Charge and launch systems
  • Transmission
  • Automatic gearbox
  • Drive shafts
  • Chassis
  • Brake system
  • Front suspension
  • Rear suspension
  • Steering
  • Body
  • Body elements
  • Electrical equipment
  • Equipment and devices
  • Electrical circuits
W140 (1991-1998) 
  • User manual
  • Controls and instruments
  • Driving and operation
  • Maintenance
  • Power unit
  • Petrol engine V6
  • Petrol engine V8
  • Petrol engine V12
  • Diesel engine OM603
  • Diesel engine OM606
  • Cooling system
  • Power supply and injection system
  • Control system HFM-SFI
  • Control system LH-SFI
  • Control systems ME-SFI
  • Diesel control system
  • Ignition system
  • Charge and launch system
  • Transmission
  • Mechanical gearbox 717.438
  • Mechanical gearbox 717.454
  • Automatic gearbox 722.5
  • Automatic gearbox 722.6
  • Clutch and drive shafts
  • Differential
  • Chassis
  • Brake system
  • Steering
  • Front suspension
  • Rear suspension
  • Body
  • Exterior (external elements)
  • Interior (internal elements)
  • Electrical equipment
  • Equipment and devices
  • Electrical circuits
W126 (1979-1991, petrol) 
  • Power unit
  • Engine repair
  • Ignition system
  • Lubrication system
  • Cooling system
  • Fuel system
  • Fuel injection system
  • Transmission
  • Clutch and cardan
  • Mechanical gearbox
  • Automatic gearbox
  • Chassis
  • Front suspension
  • Rear suspension
  • Steering
  • Brake system
  • Electrical equipment
  • Power devices
  • Electrical circuits
W116 (1972-1980, petrol) 
  • General information
  • Introduction to guide
  • Power unit
  • 8-cylinder V8 engine
  • 6-cylinder I6 engine
  • Cooling and lubrication system
  • Power system (carburetor)
  • Fuel injection system
  • Ignition system
  • Transmission
  • Clutch and cardan
  • Car gearbox
  • Chassis
  • Front suspension
  • Rear suspension
  • Steering
  • Brake system
  • Electrical equipment
  • Power devices
  • Electrical circuits
 
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