Mercedes W124

since 1985-1995 of release

Repair and car operation



W124 Mercedes
+ Governing bodies and control devices
+ MAINTENANCE
+ 2. Maintenance (diesel engines)
- ENGINE
   3.2. General data
   3.3. Repair operations on the engine established in the car
   3.4. Check of pressure of compression
   3.5. Top dead point (VMT) of the piston of the first cylinder
   3.6. Cover of a head of the block of cylinders
   3.7. Pulley cranked shaft / quencher of krutilny fluctuations and nave
   + 3.8. Cover of a driving chain
   3.9. Check and replacement of a driving chain
   + 3.10. Mechanism of a tension of a driving chain, asterisk and uspokoitel of a chain
   3.11. Intermediate shaft
   + 3.12. Drive of valves, pushers and camshaft
   + 3.13. Head of the block of cylinders
   3.14. Oil pallet
   3.15. Oil pump
   3.16. Drive flywheel / plate
   3.17. Replacement of sealing rings of a cranked shaft
   3.18. Bearing replacement in an end face of a cranked shaft
   3.19. Check and replacement of a support of the power unit
+ 4. Repair of 6-cylinder petrol SOHC engines
+ 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






ENGINE

3. Repair of the 4-cylinder petrol engine established in the car

3.1. Technical characteristics

General data

Engine code:
– the engine of 2,0 l with the carburetor
102,922
– the engine of 2,0 l with system of injection of fuel
102,963
– engine of 2,3 l
102,982
Working volume:
– engine of 2,0 l
1996 cm3
– engine of 2,3 l
2298 cm3
Diameter of cylinders:
– engine 2,0
89,0 mm
– engine of 2,3 l
95,5 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
1–3–4–2
Minimum pressure of compression:
– engine of 2,0 l
6,5 bar
– engine of 2,3 l
7,5 bar
The most admissible difference between cylinders
1,5 bar
Extent of compression:
– engine of 2,0 l
9,1: 1
– engine of 2,3 l
9,0: 1

Camshaft

Axial люфт:
– the nominal
0,70-0,150 mm
– maximum permissible
0,180 mm
Working gap of bearings:
– the nominal
0,050-0,091 mm
– maximum permissible
0,110 mm

Bolts of fastening of a head of the block of cylinders

The most admissible length
122,0 mm

Greasing system

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

Bolts of fastening of a flywheel / driving disk

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 N
Bolts of fastening of a pulley of a cranked shaft/quencher of krutilny fluctuations to a nave
25 Nanometers
Bolt of fastening of a nave of a pulley of a cranked shaft
300 Nanometers
Bolts of fastening of a cover of a driving chain
25 Nanometers
Bolt of fastening of the mechanism of a tension of an auxiliary driving belt (М12)
80 Nanometers
Bolt of fastening of a pulley of the mechanism of a tension of an auxiliary driving belt
28 Nanometers
Bolts of fastening of a rack of the shock-absorber of the mechanism of a tension of an auxiliary driving belt
10 Nanometers
Bolt of fastening of an asterisk of a camshaft
80 Nanometers
Nut of a cover of the mechanism of a tension of a driving chain
70 Nanometers
The mechanism of a tension of a driving chain to the block of cylinders of the engine
15 Nanometers
Bolt of fastening of an auxiliary shaft
5 Nanometers
Bolts of fastening of covers of bearings of a camshaft
21 Nanometers
Bolts of fastening of a head of the block of cylinders:
– bolts М12:
   • stage 1
55 Nanometers
   • stage 2
to tighten on a corner 90 °
   • stage 3
to tighten on a corner 90 °
– bolts М8
25 Nanometers
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 N
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
30 Nanometers
Bolts of fastening of a cover of the oil pump
10 Nanometers
Bolts of fastening of a flywheel:
– 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 an arm of a suspension bracket to the engine
55 Nanometers
Bolts of fastening of an arm of the engine to a cross-piece
40 Nanometers
Nuts of fastening of a shatunny cover of the bearing:
– stage 1
30 Nanometers
– stage 2
to tighten on a corner 90-100 °
Bolts of fastening of a radical cover of the bearing:
– bolts М12
90 Nanometers
– bolts М11:
   • stage 1
55 Nanometers
   • stage 2
to tighten on a corner 90-100 °
Stopper plum of cooling liquid from the block of cylinders
30 Nanometers