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
+ 5. Repair of 6-cylinder petrol DOHC engines
- 6. Repair of the diesel engine established in the car
   6.2. General information
   6.3. Repair operations on the engine established in the car
   6.4. Check of pressure of compression
   6.5. Top dead point (VMT) of the piston of the first cylinder
   6.6. Cover of a head of the block of cylinders
   6.7. Pulley cranked shaft / quencher of krutilny fluctuations and nave
   6.8. Cover of a driving chain
   6.9. Driving chain
   + 6.10. Mechanism of a tension of a driving chain, asterisk and uspokoitel of a chain
   - 6.11. Camshafts and pushers
      6.11.2. Check
      6.11.3. Installation
   6.12. Head of the block of cylinders
   6.13. Oil pallet
   6.14. Oil pump and driving chain
   6.15. Drive flywheel / plate
   6.16. Replacement of sealing rings of a cranked shaft
+ 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






6.11.2. Check

GENERAL INFORMATION

Hydraulic pusher

1–oil chamber of low pressure;

2–oil chamber of a high pressure;

3–pusher cylinder;

4–valve core;

5–camshaft cam

Camshaft

PERFORMANCE ORDER
1. Check working surfaces of bearings and contours of cams of a camshaft on wear. In the presence of any wear replace a camshaft.

Hydraulic pushers

PERFORMANCE ORDER
1. Check a condition of hydraulic pushers and nests for pushers in a head of the block of cylinders. In the presence of wear on nests for pushers the head of the block of cylinders is subject to replacement.

Check of the hydraulic pushers established in the engine

Gap check between a pusher and a cam contour

For gap check between a pusher and a contour of a cam of a camshaft press a pusher a wooden or plastic core.


PERFORMANCE ORDER
1. Start the engine and warm up it to normal working temperature.
2. Check level of engine oil.
3. Being careful not to burn, uncover heads of the block of cylinders.
4. Establish the piston of the first cylinder in the top dead point and check that all adjusting labels were combined with indexes.
5. Check that valves of the first cylinder are closed, that is cams of a camshaft are directed up. Using a plastic or wooden core, press the top part of a hydraulic pusher (see fig. Gap check between a pusher and a cam contour).
6. Continuing to press a hydraulic pusher, shchupy measure a gap between a contour of a cam and a hydraulic pusher.
7. If the measured gap exceeds admissible value, replace a hydraulic pusher.
8. For a bolt of fastening of a pulley turn a cranked shaft of the engine and similarly check other hydraulic pushers. The gap is checked only on completely closed valves that is where the cam of a camshaft is directed up.
9. After check of hydraulic pushers establish a cover of a head of the block of cylinders.