Mercedes W124

since 1985-1995 of release

Repair and car operation



W124 Mercedes
+ Governing bodies and control devices
+ MAINTENANCE
+ 2. Maintenance (diesel engines)
+ ENGINE
- 4. Repair of 6-cylinder petrol SOHC engines
   4.2. General information
   4.3. Repair operations on the engine established in the car
   4.4. Check of pressure of compression
   4.5. Top dead point (VMT) of the piston of the first cylinder
   4.6. Cover of a head of the block of cylinders
   4.7. Pulley cranked shaft / quencher of krutilny fluctuations and nave
   + 4.8. Covers of a driving chain
   4.9. Driving chain
   + 4.10. Mechanism of a tension of a driving chain, asterisk and uspokoitel of a chain
   + 4.11. Drive of valves, pushers and camshaft
   4.12. Head of the block of cylinders
   4.13. Oil pallet
   4.14. Oil pump
   4.15. Replacement of a chain of a drive of the oil pump
   4.16. Drive flywheel / plate
   4.17. Replacement of sealing rings
   4.18. Bearing replacement in an end face of a cranked shaft
   4.19. Check and replacement of a support of the power unit
+ 5. Repair of 6-cylinder petrol DOHC engines
+ 6. Repair of the diesel engine established in the car
+ 7. Major maintenance of engines
+ COOLING SYSTEM
+ FUEL SYSTEM
+ 10. System of injection of BOSCH CIS-E fuel (KE-JETRONIC)
+ 11. System of injection of BOSCH HFM fuel
+ 12. Fuel system of diesel engines
+ 13. Fuel system of diesel engines
+ SYSTEMS OF START, IGNITION
+ 15. System of ignition of 4-cylinder petrol engines
+ 16. System of ignition of four-cylinder petrol engines
+ PRESTARTING HEATING
+ TRANSMISSION
+ 19. Mechanical transmission
+ 20. Automatic transmission
+ POWER SHAFTS
+ BRAKE SYSTEM
+ SUSPENSION BRACKET
+ BODY
+ ELECTRIC EQUIPMENT
+ CHECK OF MALFUNCTIONS



Гостиничные чеки москва ссылка.



4. Repair of 6-cylinder petrol SOHC engines

4.1. Technical characteristics

GENERAL INFORMATION

The SOHC engine is an engine with one camshaft established in a head of the block of cylinders.

Engine code:
– engine of 2,6 l
103.940
– engine of 3,0 l
103.980 or 103.983
Working volume:
– engine of 2,6 l
2597 cm3
– engine of 3,0 l
2960 cm3
Diameter of cylinders:
– engine of 2,6 l
82,9 mm
– engine of 3,0 l
88,5 mm
Piston stroke
80,2 mm
Direction of rotation of a cranked shaft of the engine
Clockwise, if to look from a forward part of the car
Cylinder No. 1 arrangement
From a driving chain
Operating procedure of cylinders
1–5–3–6–2–4
Pressure of compression:
– minimum admissible pressure of compression
8,5 bar
– the most admissible difference between two any cylinders
1,5 bar
Extent of compression
9,2: 1

Camshaft

Axial люфт:
– the nominal
0,030-0,110 mm
– maximum permissible
0,150 mm
Working gap of bearings of a camshaft:
– the nominal
0,040-0,082 mm
– maximum permissible
0,100 mm
The most admissible length of bolts of fastening of a head of the block of cylinders
108,4 mm

Greasing system

The pressure created by the oil pump:
– on idling turns
0,3 bar
– at 3 000 rpm
3,0 bar

Bolts of fastening of a flywheel / plate of a drive

Minimum diameter
8,0 mm
Maximum length
22,5 mm

Tightening moments

Bolts of fastening of a cover of a head of the block of cylinders
15 Nanometers
Bolts of fastening of a pulley of a cranked shaft / quencher of krutilny fluctuations
300 Nanometers
Bolts of fastening of a casing of the fan of a radiator
21 Nanometers
Bolt of fastening of a drive of a rotor of the distributor to a camshaft:
– bolt М7
16 Nanometers
– bolt М8
21 Nanometers
Bolts of fastening of the top cover of a driving chain
21 Nanometers
Bolts of fastening of the bottom cover of a driving chain:
– bolt М6
9 Nanometers
– bolt М8
21 Nanometers
Bolt of fastening of the mechanism of a tension of an auxiliary driving belt (М12)
75 Nanometers
Bolts of fastening of an intermediate pulley of an auxiliary driving belt
30 Nanometers
Bolt of fastening of a pulley of the mechanism of a tension of an auxiliary driving belt
30 Nanometers
Bolt of fastening of an asterisk of a camshaft
16 Nanometers
Kolpachkovy nut of the case of the mechanism of a tension of a driving chain
50 Nanometers
The carving plug of fastening of the mechanism of a tension of a driving chain to a cover
30 Nanometers
Bolts of fastening of covers of bearings of a camshaft
21 Nanometers
Bolts of fastening of a head of the block of cylinders:
– stage 1
70 Nanometers
– stage 2
to tighten on a corner 90 °
– stage 3
to tighten on a corner 90 °
Bolts of fastening of a transmission to the engine:
– mechanical transmission:
   • bolts М10 x 40
55 Nanometers
   • bolts М10 x 90
45 Nanometers
– automatic transmission:
   • bolts М10
55 Nanometers
   • bolts М12
65 Nanometers
Bolts of fastening of the oil pallet:
– bolts М6
10 Nanometers
– bolts М8
25 Nanometers
Masloslivny stopper
25 Nanometers
Stopper of a safety valve of pressure of oil
50 Nanometers
Bolt of fastening of an asterisk of the oil pump
32 Nanometers
Bolts of fastening of the oil pump
25 Nanometers
Bolts of fastening of a flywheel / plate of a drive:
– stage 1:
   • standard flywheel
30 Nanometers
   • a flywheel with the doubled weight
40 Nanometers
– stage 2
to tighten on a corner 90-100 °
Bolts of fastening of a back cover of a cranked shaft
10 Nanometers
Bolts of fastening of arms of support of the engine to the engine
55 Nanometers
Bolts of fastening of a cross-piece to an engine arm
40 Nanometers
Bolts of fastening of support of the engine
25 Nanometers
Nuts of fastening of covers of shatunny bearings:
– stage 1
30 Nanometers
– stage 2
to tighten on a corner 90-100 °
Bolts of fastening of covers of radical bearings:
– stage 1
55 Nanometers
– stage 2
to tighten on a corner 90-100 °
Stopper plum of cooling liquid from the block of cylinders of the engine
30 Nanometers