Contents: Injection system of gasoline engines ↡ Diesel engine injection system ↡ Tightening force of threaded…↡
Note: Individual characteristics are also given in the text of the Chapter and, if their implementation is mandatory, are highlighted in bold.
Injection system of gasoline engines
| Types of fuel used | Cm. Specifications |
| Fuel tank capacity | Cm. Specifications |
| Injection system type | Electronic microprocessor-controlled distributed injection system ME-SFI |
| The principle of air flow measurement | Hot-wire air mass flow (MAF) sensor |
| Fuel pump type | Pierburg D-722156.00 |
| Idle speed, min⁻¹ | |
| 600÷850 |
| 550÷800 |
| CO content at idle speed, at oil temperature of 60°C (all models) | Not more than 0.5%, not subject to adjustment |
| CO content at 2200-2800 rpm (all models) | Not more than 0.3% |
| HC content at idle speed, ppm (particles) (all models) | 100 |
| ₂ content at idle speed (all models) | 14.5-16% |
| Contents About ₂ at idle (all models) | 0.1-0.5% |
| Lambda value at 2200-2800 rpm (all models) | 0.97-1.03 |
Diesel engine injection system
| Types of fuel used | Cm. Specifications |
| Fuel tank capacity | Cm. Specifications |
| Injection system type | CDI |
| The principle of air flow measurement | Hot-wire air mass flow (MAF) sensor |
| Exhaust gas opacity | |
| No more than 73% |
| 56% |
| Setting the valve timing (for 2mm valve opening with a non-new timing chain) | |
| |
| |
| 19° after TDC |
| 7° after TDC |
| |
| 9° before TDC |
| 22° before TDC |
| |
| |
| |
| 18° after TDC |
| 6° after TDC |
| |
| 11° before TDC |
| 23° before TDC |
| |
| |
| 18° after TDC |
| 6° after TDC |
| |
| 11° before TDC |
| 28° before TDC |
| Idle speed, min⁻¹ | |
| 640÷840 |
| 510÷710 |
| Maximum allowable speed (no load), min⁻¹ | |
| 4200÷4600 |
| 4500÷4900 |
Tightening force of threaded connections, Nm
Power supply system
Petrol models
| Bolts securing the intake manifold to the cylinder head | 20 |
| Electronic throttle actuator to intake manifold mounting bolts | 9 |
| Fastening the fuel supply line to the fuel distribution line | 38 |
Diesel models
M612
| Cylinder Head Cover Trim Panel Fastening Screws | 10 |
| Air Distributor Trim Panel Fastening Screws | 10 |
| Air distributor bolts (M7) | 16 |
| Bolts for fastening the support bracket to the air distributor | 20 |
| Bolts for fastening the electric motor of the intake port shut-off drive to the air distributor | 9 |
| Exhaust manifold flange connection bolts to turbocharger | 30 |
| Bolt securing the outlet oil line to the turbocharger | 9 |
| Threaded nozzle for fastening the oil supply line to the turbocharger | 30 |
| Bolt securing the oil supply line to the cylinder head | 9 |
| Bolt securing support bracket to turbocharger | 30 |
| Turbocharger support bracket to engine crankcase mounting bolt | 20 |
| Exhaust manifold to cylinder head mounting nuts | 30 |
| Bolts securing the fuel pre-pump to the upper cylinder head cover | 9 |
| Nuts for fastening the pressure line to the injection pump/fuel distribution line | 23 |
| Fuel injection pump support bracket bolts | 9 |
| Bolts for fastening the injection pump to the cylinder head | 14 |
| Bolts securing the fuel distribution line to the cylinder head | 14 |
| Hollow bolt of the union connection of the oil drain line to the fuel distribution line | 20 |
| Nuts for fastening pressure lines to injectors/fuel distribution line | 23 |
| Bolts for fastening clamps on injectors | |
| 7 |
| Pull to a 90° angle |
| Fastening the pressure sensor to the fuel distribution line | 20 |
| Bolts securing the pressure control valve to the fuel rail | |
| 3 |
| 5 |
[Information copied from the website: Mercedesman.ru]
M628
| Air distributor bolts (M7) | 16 |
| Bolt securing EGR pipe to EGR cooler | 15 |
| Exhaust manifold flange connection bolts to turbocharger | 30 |
| Bolt securing the outlet oil line to the turbocharger | 9 |
| Threaded nozzle for fastening the oil supply line to the turbocharger | 30 |
| Bolt securing the oil supply line to the cylinder head | 10 |
| Bolt securing support bracket to turbocharger | 30 |
| Exhaust manifold to cylinder head mounting nuts | 30 |
| Bolts for fastening the fuel pre-pump to the high-pressure fuel pump | 9 |
| Nuts for fastening the pressure line to the injection pump/valve assembly | 23 |
| Bolts for fastening the fuel injection pump to the cylinder head | 14 |
| Bolts securing the fuel distribution line to the cylinder head | 20 |
| Nuts for fastening the pressure line to the valve assembly/fuel distribution line | 23 |
| Bolts for fastening clamps on injectors | |
| 7 |
| Pull to a 90° angle |
| Fastening the pressure sensor to the valve assembly | 35 |
| Hollow bolt of the union connection of the oil drain line to the fuel distribution line | 20 |
| Fastening the valve assembly to the air distributor | 12 |
| Bolt of the clamp for fastening the pressure line to the air distributor | 8 |