Installing high pressure pump
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NOTE:
RISK OF DAMAGE
Damage to the engine .
If the engine is manually rotated in the wrong direction of rotation, the engine can be damaged .
Damage to the engine .
If the engine is manually rotated in the wrong direction of rotation, the engine can be damaged .
- Only rotate the engine manually in the correct direction of rotation: a) clockwise when looking at the damper, or b) counterclockwise when looking at the chain drive. b) applies only if the timing chain is installed in the rear.
NOTE:
TECHNICAL INFORMATION
Only G05 and G07
On vehicles with an active stabilizer (ARS), the fan cowl must be removed to crank the engine.
For additional information see: REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN .
Only G05 and G07
On vehicles with an active stabilizer (ARS), the fan cowl must be removed to crank the engine.
For additional information see: REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN .
NOTE:
TECHNICAL INFORMATION
The high pressure pump is preloaded by the piston spring and must be removed by alternately unscrewing the screws without tilting.
Before installing the high pressure pump, the cam of the high pressure pump drive must be turned to bottom dead center.
If necessary, turn the engine in the direction of engine rotation on the central bolt of the crankshaft, otherwise there is a risk of piston breakage of the high pressure pump.
The high pressure pump is preloaded by the piston spring and must be removed by alternately unscrewing the screws without tilting.
Before installing the high pressure pump, the cam of the high pressure pump drive must be turned to bottom dead center.
If necessary, turn the engine in the direction of engine rotation on the central bolt of the crankshaft, otherwise there is a risk of piston breakage of the high pressure pump.
- Place the depth gauge (1) flat onto the high pressure pump flange.
- Turn the engine on the central bolt in the direction of engine rotation until the camshaft has reached the BDC position.
The depth gauge (1) is in the deepest position.
NOTE: RISK OF DAMAGE
Damage to the engine .
If the engine is manually rotated in the wrong direction of rotation, the engine can be damaged .- Only rotate the engine manually in the correct direction of rotation: a) clockwise when looking at the damper, or b) counterclockwise when looking at the chain drive. b) applies only if the timing chain is installed in the rear.
- Rotate the engine with the special tool 0 493 380 (11 6 480)
until the cam of the high-pressure pump drive is at the BDC position
.
- Guide out and remove gasket (1).
- Replace gasket (1).
Parts : Gasket
NOTE: TECHNICAL INFORMATION
The sealing surfaces must be free of oil, grease and cleaning agents. - Check the threads (1) on the high pressure pump flange for sealing compound residue: Remove sealing compound residue as needed.
- Clean the thread (1) with a thread cutter M6 .
- Make sure that no contamination enters the engine.
- Cover opening at the high pressure pump flange with suitable materials.NOTE: TECHNICAL INFORMATION
The sealing surfaces must be free of oil, grease and cleaning agents. - Clean sealing surface (1).
- Insert and install the gasket (1).
- Make sure that seal (1) is correctly positioned in marked
area.NOTE: RISK OF DAMAGE
Damage to the surface .
The use of metal-cutting tools (e.g., emery cloths) for cleaning surfaces can damage them and lead to leaks and/or engine damage .- Do not use any metal-cutting tools.
NOTE: TECHNICAL INFORMATION
The sealing surfaces must be free of oil, grease and cleaning agents. - Clean sealing surface (1).
- Feed in and install high pressure pump (2).
- Replace the bolts (arrows).
Parts : screw
- Bring the screws (arrows) at the high pressure pump (2) into position and tighten in alternating order
in steps of 90°
.
Compliance with this specification is imperative to make sure that the piston will not break due to twisting.
TIGHTENING TORQUE SPECIFICATIONSHigh pressure pump to high pressure pump flange M6x25
Replace screws.Joining torque 12 Nm Angle of rotation 90° - Connect connectors (1) and lock.
- Make sure the connector (1) engages audibly.
Follow-up work
- Refer to INSTALLING THE HIGH-PRESSURE LINE BETWEEN THE HIGH-PRESSURE PUMP AND THE HIGH-PRESSURE RAIL .
- Refer to INSTALLING FUEL DELIVERY LINE .
- Refer to INSTALLING ALL IGNITION COILS .
- Refer to INSTALLING ACOUSTIC COVER AT REAR .
- Refer to INSTALLING ACOUSTIC COVER .
- Refer to INSTALLING FRONT UNDERBODY PROTECTION .
- Refer to ACTIVATING THE 48 V ELECTRICAL SYSTEM .
- Refer to CONNECTING ALL BATTERY GROUND LEADS .