Scheme 528
- Balance Shaft Removing and installing, refer to «BALANCE SHAFT»(ref-522411-S39356547942013011400000)
- Bolt 60 Nm For loosening and tightening, use the locating pin T40116 as a counter holder
- Balance Shaft Transmission Side Can only be placed on the balance shaft in one position
- Gear Carrier
- Bolt 13 Nm
- Balance Shaft Belt Pulley Side Can only be placed on the balance shaft in one position
- Bolt 60 Nm For loosening and tightening, use the locating pin T40116 as a counter holder
CAMSHAFT TIMING CHAINS OVERVIEW
Left Camshaft Timing Chain
Scheme 529
- Bolt 80 Nm + 90° turn Replace
- Bolt 80 Nm + 90° turn Replace
- Camshaft Chain Sprocket for the Exhaust Camshaft Removing and installing, refer to «CAMSHAFT TIMING CHAINS, REMOVING FROM CAMSHAFTS»(ref-522411-S19267544082013011400000)
- Camshaft Adjuster for Intake Camshaft Identification "Intake" Removing and installing, refer to «CAMSHAFT TIMING CHAINS, REMOVING FROM CAMSHAFTS»(ref-522411-S19267544082013011400000)
- Left Camshaft Timing Chain Mark the running direction with paint for reinstallation Remove from the camshafts, refer to «CAMSHAFT TIMING CHAINS, REMOVING FROM CAMSHAFTS»(ref-522411-S19267544082013011400000) Removing and installing, refer to «CAMSHAFT TIMING CHAINS»(ref-522411-S38751920112013011400000)
- Bolt 9 Nm
- Gliding piece
- Left Camshaft Timing Chain Tensioner Removing and installing, refer to «CAMSHAFT TIMING CHAINS, REMOVING FROM CAMSHAFTS»(ref-522411-S19267544082013011400000)
- Drive Chain Sprocket Bearing Plate
- Bolt 8 Nm + 45° turn Replace
- Left Camshaft Timing Chain Drive Sprocket
- Pivot Pin for Drive Sprocket for the left camshaft control chain
- Bolts Tightening specification, refer to item 3: 3
Right Camshaft Timing Chain
Scheme 530
- Bolt 80 Nm plus an additional 90° turn Replace
- Camshaft Chain Sprocket for the Exhaust Camshaft Removing and installing, refer to «CAMSHAFT TIMING CHAINS, REMOVING FROM CAMSHAFTS»(ref-522411-S19267544082013011400000)
- Bolt 80 Nm plus an additional 90° turn Replace
- Camshaft Adjuster for Intake Camshaft Identification "Intake" Removing and installing, refer to «CAMSHAFT TIMING CHAINS, REMOVING FROM CAMSHAFTS»(ref-522411-S19267544082013011400000)
- Bolt Tightening specification, refer to item 15: 15
- Pivot Pin for Drive Sprocket For the right camshaft timing chain Asymmetrical version Installed position (Scheme 544)
- Right Camshaft Timing Chain Drive Sprocket Installed position (Scheme 544)
- Right Camshaft Timing Chain Mark the running direction with paint for reinstallation Remove from the camshafts, refer to «CAMSHAFT TIMING CHAINS, REMOVING FROM CAMSHAFTS»(ref-522411-S19267544082013011400000) Removing and installing, refer to «CAMSHAFT TIMING CHAINS»(ref-522411-S38751920112013011400000)
- Thrust Washer for Drive Sprocket For the right camshaft timing chain Asymmetrical version Installed position (Scheme 544)
- Right Camshaft Timing Chain Tensioner Removing and installing, refer to «CAMSHAFT TIMING CHAINS, REMOVING FROM CAMSHAFTS»(ref-522411-S19267544082013011400000)
- Gliding Piece
- Bolt 9 Nm
CYLINDER HEAD OVERVIEW
Note. The illustration shows the cylinder bank 2 cylinder head (left).
Scheme 531
- Cylinder Head Gasket Removing and installing, refer to «CYLINDER HEADS»(ref-522411-S07119504162013011400000) Installed position: the part number faces the cylinder head Change the coolant and engine oil after replacing
- Cylinder Head Removing and installing, refer to «CYLINDER HEADS»(ref-522411-S07119504162013011400000) Check for distortion (Scheme 535)Reworking dimension (Scheme 536)Change the coolant and engine oil after replacing
- Bolt Tightening specification, refer to «Specifications»(ref-522417-S29423962822013011400000)
- Vacuum Pump Removing and installing, refer to «Removal and Installation»(ref-522417-S31420784792013011400000)
- O-ring Replace
- Camshaft Position Sensor Cylinder bank 1 (right) Camshaft Position (CMP) sensor -G40- Cylinder bank 2 (left) Camshaft Position (CMP) sensor 2 -G163
- Bolt Tightening specification, refer to «Specifications»(ref-522374-S02878801272013011400000)
- Bolt Replace Follow the sequence when loosening, refer to «LOOSEN THE CYLINDER HEAD BOLTS IN THE FOLLOWING SEQUENCE -1 THROUGH 8»(ref-522411-S15433403792013011400000) Tightening specification and sequence (Scheme 534)
- Ignition Coil Removing and installing, refer to «Removal and Installation»(ref-522374-S02718468402013011400000)
- Cylinder Head Cover Removing and installing: left, refer to «LEFT CYLINDER HEAD COVER»(ref-522411-S28258937192013011400000), right refer to «RIGHT CYLINDER HEAD COVER»(ref-522411-S03319100642013011400000)
- Gasket Replace if damaged or leaking
- Cover
- Bolt Replace if the seal is damaged Tightening specification and sequence: left cylinder head cover (Scheme 532), right cylinder head cover (Scheme 533)
- Bolt Tightening specification, refer to «Specifications»(ref-522374-S02878801272013011400000)
- Connector Strip For the ignition coils
- Cylinder Head Cover Gasket Replace if damaged or leaking
- Camshaft Adjustment Solenoid Valve Cylinder bank 1 (right) camshaft adjustment valve 1 -N205- Cylinder bank 2 (left) camshaft adjustment valve 2 -N208
- Bolt 5 Nm
- O-ring Replace
Scheme 532
Tighten the bolts to 9 Nm in the following sequence: -1 to 12-.
Scheme 533
Tighten the bolts to 9 Nm in the following sequence: -1 to 12-.
Scheme 534
Note. Replace any bolts that were tightened with an additional turn.
Tighten the bolts in 4 steps and in the sequence shown
| Stage | Bolts | Tightening Specification/Additional Turn |
|---|---|---|
| 1. | 1 through 8 | Install all the way in by hand. |
| 2. | 1 through 8 | 40 Nm |
| 3. | 1 through 8 | Tighten 90° further |
| 4. | 1 through 8 | Tighten 90° further |
Scheme 535
Check the cylinder head on several locations for distortion using a straight edge 500 mm VAS 6075 and a feeler gauge.
- Maximum warp: 0.05 mm.
Scheme 536
Resurfacing cylinder head (face grinding) is only permissible to minimum dimension -a-.
- Minimum dimension -a- = 139.20 mm.
Scheme 537
Tighten the bolt -arrow- to 9 Nm.
Scheme 538
- Crankshaft
- Power Take-Off Drive Chain Mark the running direction with paint for reinstallation Removing and installing, refer to «POWER TAKE-OFF DRIVE CHAIN»(ref-522411-S23011380752013011400000)
- Drive Sprocket for Oil Pump Installed position: The labeled side faces the engine
- Bolt 30 Nm plus an additional 90° turn Replace
- Pressure Spring
- Bolt 15 Nm plus an additional 90° turn Replace
- Balance Shaft Chain Sprocket Installed position: The labeled side faces the transmission
- Chain Tensioner With glide track
- Bolt 10 Nm plus an additional 45° turn Replace
Scheme 539
- Bolt Replace Tightening specification and sequence (Scheme 542)
- Crankshaft Shaft Seal, Transmission Side Removing and installing, refer to «CRANKSHAFT SEAL, TRANSMISSION SIDE»(ref-522348-S06148930712013011400000)
- Bolt Replace Tightening specification and sequence (Scheme 542)
- Alignment Bushing Quantity: 2
- Threaded Pin Tightening specification (Scheme 542)
- Left Cylinder Head Gasket
- Left Timing Chain Cover Removing and installing, refer to «LEFT AND RIGHT TIMING CHAIN COVERS»(ref-522411-S25572598492013011400000)
- Bracket For wiring harness
- Bolt Replace Tightening specification and sequence (Scheme 540)
- Lower Timing Chain Cover Removing and installing, refer to «LOWER TIMING CHAIN COVER»(ref-522411-S03259973532013011400000)
- Seals Replace
- Bolt Tightening specification and sequence (Scheme 541)
- Bracket For the electrical connectors
- Bolt Replace Tightening specification and sequence (Scheme 541)
- Right Timing Chain Cover Removing and installing, refer to «LEFT AND RIGHT TIMING CHAIN COVERS»(ref-522411-S25572598492013011400000)
- Right Cylinder Head Gasket
- Alignment Bushing Quantity: 2
- Bolt Tightening specification and sequence (Scheme 542)
- Engine Speed (RPM) Sensor -G28- Removing and installing, refer to «Removal and Installation»(ref-522374-S02718468402013011400000)
- Bolt Tightening specification, refer to «Specifications»(ref-522374-S02878801272013011400000)
Scheme 540
Note. Replace any bolts that were tightened with an additional turn.
Tighten the bolts in 2 steps and in the sequence shown
| Stage | Bolts | Tightening Specification/Additional Turn |
|---|---|---|
| 1. | 1 through 8 | 5 Nm |
| 2. | 1 through 8 | Tighten 90° further |
Scheme 541
Note. Replace any bolts that were tightened with an additional turn.
Tighten the bolts in 2 steps and in the sequence shown
| Stage | Bolts | Tightening Specification/Additional Turn |
|---|---|---|
| 1. | 1 through 8 | 5 Nm |
| 2. | 1 through 8 | Tighten 90° further |
Scheme 542
Note. Replace any bolts that were tightened with an additional turn.
Tighten bolts in 8 stages as follows
| Stage | Bolts | Tightening Specification/Additional Turn |
|---|---|---|
| 1. | Arrows | 3 Nm |
| 2. | 1 through 10 | 3 Nm in a diagonal sequence |
| 3. | 1, 2, 4, 5, 7- and -arrows | Tighten 90° further |
| 4. | 8, 9, 10 | 8 Nm |
| 5. | 8, 9, 10 | Tighten 90° further |
| 6. | 3 | 16 Nm |
| 7. | 6 | 20 Nm |
| 8. | 6 | Tighten 90° further |
Scheme 543
- Guide Rail
- Bolt 10 Nm plus an additional 90° turn Replace
- Bolts 5 Nm plus an additional 60° turn Replace
- Pivot Pin for Drive Sprocket
- Drive Sprocket for Left Timing Chain
- Bolt 10 Nm plus an additional 90° turn Replace
- Power Take-Off Drive Chain Mark the running direction with paint for reinstallation Removing and installing, refer to «TIMING MECHANISM DRIVE CHAIN»(ref-522411-S38072150232013011400000)
- Bolt 10 Nm plus an additional 90° turn Replace
- Guide Rail
- Bolt 8 Nm plus an additional 45° turn Replace
- Drive Chain Sprocket Bearing Plate For the right camshaft timing chain Asymmetrical version
- Drive Sprocket for Right Timing Chain Installed position (Scheme 544)
- Thrust Washer asymmetrical version Installed position (Scheme 544)
- Pivot Pin for Drive Sprocket Asymmetrical version Installed position (Scheme 544)
- Bolt 30 Nm plus an additional 90° turn
- Gasket Replace
- Chain Tensioner Removing and installing, refer to «TIMING MECHANISM DRIVE CHAIN»(ref-522411-S38072150232013011400000)
- Bolt 9 Nm
- Crankshaft
- Bolt 10 Nm plus an additional 90° turn Replace
Scheme 544
- The alignment bushings in the right camshaft timing chain drive sprocket mounting pins -3- must engage in the holes in the thrust washer -1- and cylinder block.
2 - Right camshaft timing chain drive sprocket
4 - Bolt
VALVE TRAIN OVERVIEW
| CAUTION | Risk of damaging valves and piston heads after working on the valve train. The motor must not be started for about 30 minutes after installing camshafts because the hydraulic equalization elements must seat themselves. To ensure valves do not strike pistons when starting, carefully rotate engine at least 2 full revolutions. |
Note. Cylinder heads with cracks between the valve seats, or between the valve seat and the spark plug threads, can continue to be used without reducing the service life, as long as the cracks have a width of max. 0.3 mm, or only the first 4 threads of the spark plug threads are cracked.
Note. The illustration shows the cylinder bank 2 cylinder head (left).
Scheme 545
- Sealing Plug Install with sealant
- Cylinder Head Valve guides, checking, refer to «VALVE GUIDES, CHECKING»(ref-522411-S07956749902013011400000)
- Valve Stem Seal Replacing with the cylinder head installed, refer to «VALVE STEM SEALS, CYLINDER HEAD INSTALLED»(ref-522411-S41169738142013011400000) Replacing with the cylinder head removed, refer to «VALVE STEM SEALS WITH CYLINDER HEAR REMOVED, REPLACING»(ref-522411-S40567305642013011400000)
- Valve Spring Installed position (Scheme 546)
- Hydraulic Adjusting Elements Clipped into roller rocker lever -8- Checking, refer to «HYDRAULIC ADJUSTING ELEMENTS, CHECKING»(ref-522411-S22724895822013011400000) Mark the installed position for installation later Lubricate the running surfaces before installing
- Valve Spring Plate
- Valve Retainers
- Roller Rocker Lever Mark the installed position for installation later Check roller for easy movement Lubricate the running surfaces before installing To assemble, clip onto the hydraulic adjusting element -9- with securing clip -5
- Clip Not available individually Make sure it is secure
- Intake Camshaft Removing and installing, refer to «CAMSHAFTS»(ref-522411-S28233398612013011400000) Axial play, measuring, refer to «CAMSHAFT, MEASURING AXIAL CLEARANCE»(ref-522411-S21054351792013011400000) Radial clearance, measuring, refer to «CAMSHAFT, MEASURING RADIAL CLEARANCE»(ref-522411-S19044355762013011400000) Maximum run out: 0.04 mm
- Bolt Replace Tightening specification and sequence (Scheme 547)
- Guide Frame With integrated camshaft bearings Removing and installing, refer to «CAMSHAFTS»(ref-522411-S28233398612013011400000)
- Compression Ring
- Compression Ring
- Exhaust Camshaft Removing and installing, refer to «CAMSHAFTS»(ref-522411-S28233398612013011400000) Axial play, measuring, refer to «CAMSHAFT, MEASURING AXIAL CLEARANCE»(ref-522411-S21054351792013011400000) Radial clearance, measuring, refer to «CAMSHAFT, MEASURING RADIAL CLEARANCE»(ref-522411-S19044355762013011400000) Maximum run out: 0.04 mm
- Oil Strainer
- Intake Valve Do not rework, only lapping is permitted Mark the installed position for installation later Checking, refer to «VALVES, CHECKING»(ref-522411-S29664310762013011400000) Valve dimensions, refer to «VALVE DIMENSIONS»(ref-522411-S18658206552013011400000) Valve guides, checking, refer to «VALVE GUIDES, CHECKING»(ref-522411-S07956749902013011400000)
- Exhaust Valve Do not rework, only lapping is permitted Mark the installed position for installation later Checking, refer to «VALVES, CHECKING»(ref-522411-S29664310762013011400000) Valve dimensions, refer to «VALVE DIMENSIONS»(ref-522411-S18658206552013011400000) Valve Guides, Checking, refer to «VALVE GUIDES, CHECKING»(ref-522411-S07956749902013011400000)
Scheme 546
- The tight spring coils -arrow- face toward the cylinder head.
Scheme 547
Note. The guide frame for the left cylinder head camshaft is shown in the illustration. The right cylinder head is identical. Replace any bolts that were tightened with an additional turn.
Tighten the bolts in 3 steps and in the sequence shown
| Stage | Bolts | Tightening Specification/Additional Turn |
|---|---|---|
| 1. | 1 through 21 | Install the bolts all the way in by hand The guide frame must touch the entire contact surface on the cylinder head. |
| 2. | 1 through 21 | 8 Nm |
| 3. | 1 through 21 | Tighten 90° additional turn |