Special Features And Component Deviations - V6

Information 

Please observe the following for the V6 => 

• The repair concepts for the V6 are the same as for the V8. 
• The special features and component deviations are listed and shown in →  1001IN TIGHTENING TORQUES, TIGHTENING SEQUENCES AND ASSEMBLY OVERVIEWS  . 
• More significant deviations are shown in separate descriptions. 
• If no special features are specifically highlighted, the assembly and adjustment instructions for the V8 apply. 
  Fig 1: Identifying Upper Part Of Crankcase

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1. Upper part of crankcase
2. Lid
3. Sealing ring
4. Screw plug for upper part of crankcase → Tightening torque: 30 Nm (22 ftlb.)  and → Torque angle: 60° 
5. Dowel sleeve
6. Oil spray jet
7. Screw, M6 x 16 → Tightening torque: 10 Nm (7.5 ftlb.) 
   Fig 2: Lower Part Of Crankcase (4WD)

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1. Lower part of crankcase
2. Straight pin, 6 x 18
3. Dowel sleeve
4. Seal
5. Sealing flange
6. Screw, M6 x 20 → Tightening torque: 13 Nm (9.5 ftlb.) 
7. Screw, M8 x 35 → Tightening torque: 23 Nm (17 ftlb.) 
8. Screw, M8 x 50 → Tightening torque: 23 Nm (17 ftlb.) 
9. Sealing rings for sealing flange/cross tube
10. Cross tube for all-wheel drive cross shaft
11. Aluminum screw  , M8 x 70; (cross bolt connection); always use new aluminum screws; → Initial tightening: 10 Nm (7.5 ftlb.)  and → Final tightening: 90° 
12. Thrust-bearing screw M10; tighten screws within 5 minutes; observe tightening sequence. → Initial tightening: 22 Nm (16 ftlb.)  → Torque angle: 60° 
13. Thrust-bearing screw M11; tighten screws within 5 minutes; observe tightening sequence. → Initial tightening: 30 Nm (22 ftlb.)  → Torque angle: 90° 
14. Sealing ring

-  - Sealant application - Doboseal 224N (999.915.573.43, status 09/08)

Fig 3: Identifying Lower Part Of Crankcase (2WD)

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1. Lower part of crankcase
2. Straight pin, 6 x 18
3. Sealing ring
4. Sealant application - Doboseal 224N (999.915.573.43, status 09/08)
5. Thrust-bearing screw M11; tighten screws within 5 minutes; observe tightening sequence. → Initial tightening: 30 Nm (22 ftlb.)  → Torque angle: 90° 
6. Thrust-bearing screw M10; tighten screws within 5 minutes; observe tightening sequence. → Initial tightening: 22 Nm (16 ftlb.)  → Torque angle: 60° 
7. Aluminum screw  , M8 x 70; (cross bolt connection); always use new aluminum screws; → Initial tightening: 10 Nm (7.5 ftlb.)  and → Final tightening: 90° 
8. Screw, M8 x 35 → Tightening torque: 23 Nm (17 ftlb.) 
9. Screw, M8 x 50 → Tightening torque: 23 Nm (17 ftlb.) 
10. Dowel sleeve 
    Fig 4: Tightening Sequence For Crankcase Screws

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1 to 16  - Tightening sequence for M11 and M10 screws => Observe different torques!

• - Tightening sequence for securing lower part of crankcase to upper part of crankcase (M8 cross bolt connection) - start at the center and tighten uniformly in diagonally opposite sequence

Fig 5: Sealant Applying Areas Of Lower Part Of Crankcase

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1. Apply Doboseal 224N sealant (999.915.573.43, status 09/08); wipe off sealant residue following fitting
   Fig 6: Identifying Bracket (2WD)

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1. Bracket for auxiliary units
2. Screw, M10 x 45 → Tightening torque: 65 Nm (48 ftlb.) 
3. Dowel sleeve
4. Hydraulic mount, left
5. Nut, M12 → Tightening torque: 120 Nm (89 ftlb.) 
   Fig 7: Identifying Bracket (4WD)

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1. Bracket for auxiliary units↓
2. Screw, M10 x 45 → Tightening torque: 65 Nm (48 ftlb.) 
3. Dowel sleeve
4. Hydraulic mount, left
5. Nut, M12 → Tightening torque: 120 Nm (89 ftlb.) 
   Fig 8: Identifying Bracket For Engine Mounting

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1. Engine carrier
2. Screw, M10 x 45 → Tightening torque: 65 Nm (48 ftlb.) 
3. Nut, M12 x 1.5 → Tightening torque: 120 Nm (89 ftlb.) 
4. Hydraulic mount, right
   Fig 9: Identifying Oil Mist Separator

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1. Engine ventilation/oil mist separator
2. Molded seal
3. Molded seal

-  - Screw elements, M6 (permanently secured in oil mist separator) → Tightening torque: 10 Nm (7.5 ftlb.) 

Fig 10: Identifying Engine Ventilation Line, Aluminum Holder, Screw And Tank Ventilation

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1. Engine ventilation line
2. Line for oil mist separator to intake-air distributor
3. Aluminum holder
4. Tank ventilation
5. Aluminum screw (holder); see Timing-case cover
   Fig 11: Identifying Crankshaft Mount Sealing Ring

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1. Crankshaft
2. Straight pin, 6 x 20
3. Spring, 5 x 6.5
4. Thrust washer (grooves facing out)
5. Main bearing shell, upper
6. Main bearing shell, lower
7. Shaft sealing ring => Do not touch sealing ring lip! Clean crankshaft flange and oil lightly

-  - Crankshaft bearing classification (four types) Y  Yellow; B  Blue, R  Red; N  Green => (example: YYYY-BBB; 4 main shaft bearings with yellow marking, 3 double (6) connecting rod bearings with blue marking) => For numbering, see flywheel flange

-  - Direction of travel (main bearing 1 is the first in direction of travel against output)

Fig 12: Identifying Auxiliary Units

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1. Air-conditioning compressor
2. Screw, M10 x 100 → Tightening torque: 46 Nm (34 ftlb.) 
3. Screw, M8 x 100 → Tightening torque: 23 Nm (17 ftlb.) 
4. Screw, M8 x 20; tandem pump to bracket for auxiliary units → Tightening torque: 23 Nm (17 ftlb.)  ; power-steering pump to bracket for auxiliary units → Tightening torque: 23 Nm (17 ftlb.) 
5. Tandem pump
6. Screw, M8 x 35; power-steering pump to adapter bracket → Tightening torque: 23 Nm (17 ftlb.)  ; tandem pump/adapter bracket to bracket for auxiliary units → Tightening torque: 23 Nm (17 ftlb.) 
7. Power-steering pump
8. Aluminum screw  , M8; always use new aluminum screws → Initial tightening: 10 Nm (7.5 ftlb.)  and → Final tightening: 90° 
9. Support bracket is made of magnesium 
10. Dowel sleeve
    Fig 13: Identifying Vibration Balancer Pulleys

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1. Water pump pulley
2. Screw, M8 x 16 → Tightening torque: 23 Nm (17 ftlb.) 
3. Vibration damper
4. Screw, M18 x 1.5 x 72; use new screw; → Tightening torque: 20 Nm (15 ftlb.)  and → Tightening torque: 50 Nm (37 ftlb.)  and → Tightening torque: 100 Nm (74 ftlb.)  and → Torque angle: 180° 
5. Power-steering pump pulley
6. Screw, M8 x 16 → Tightening torque: 23 Nm (17 ftlb.) 
7. Tandem pump pulley
   Fig 14: Routing Of Belt Drive

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1. Deflection roller → Tightening torque: 32 Nm (24 ftlb.) 
2. Hydraulic belt tensioner; tensioner to lever → Tightening torque: 32 Nm (24 ftlb.)  ; tensioning roller to tensioning lever → Tightening torque: 32 Nm (24 ftlb.) 
3. Screw, M8 x 96; complete lever to timing-case cover and cylinder head → Tightening torque: 32 Nm (24 ftlb.)  ; belt tensioner and timing-case cover to bracket → Tightening torque: 32 Nm (24 ftlb.) 
4. Deflection roller → Tightening torque: 32 Nm (24 ftlb.) 
5. Dual poly V-belt
   Fig 15: Identifying Timing-Case Cover - Chain Tensioner Sealing Flange

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1. Joint flange (oil sealing lip with engine oil); align with sleeve or vibration balancer
2. Aluminum screw  M6 x 55; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
3. Aluminum screw  M6 x 20; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
4. Chain tensioner (Do not confuse V6 chain tensioner with V8 chain tensioner  , color of V6 chain tensioner is different to the V8 chain tensioner) → Tightening torque: 60 Nm (44 ftlb.)  and sealing ring; always replace sealing ring

-  - Cylinder head 1 to 3

1. Spark plug; when reinstalled → Tightening torque: 25 Nm (19 ftlb.)  ; if fitting new spark plugs → Tightening torque: 30 Nm (22 ftlb.) 
2. Cylinder head gasket 1 to 3
3. Screw, M8 → Tightening torque: 23 Nm (17 ftlb.) 
4. Lid
5. Stopper
6. Stopper
7. Restrictor for valve lift control → Tightening torque: 2 Nm (1.5 ftlb.) 
8. Cylinder-head screws => For tightening specifications, see Fig 18
   Fig 16: Identifying Cylinder Head 1 To 3

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1. Cylinder head 4 to 6
2. Screw plug → Tightening torque: 5 Nm (3.5 ftlb.) 
3. Spark plug; when reinstalled → Tightening torque: 25 Nm (19 ftlb.)  ; if fitting new spark plugs → Tightening torque: 30 Nm (22 ftlb.) 
4. Cylinder head gasket 4 to 6
5. Stopper
6. Restrictor for valve lift control → Tightening torque: 2 Nm (1.5 ftlb.) 
7. Stopper
8. Lid
9. Cylinder-head screws => For tightening specifications, see Fig 18
Fig 17: Identifying Cylinder Head 4 To 6
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Fig 18: Tightening Sequence For Cylinder Head

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1 to 8  - 1st Initial tightening → Tightening torque: 30 Nm (22 ftlb.)  ; 2nd Initial tightening → Tightening torque: 50 Nm (37 ftlb.)  ; loosen by 2 turns → Torque angle: 720°  ; 1st turn → Tightening torque: 30 Nm (22 ftlb.)  ; 2nd turn → Tightening torque: 30 Nm (22 ftlb.)  ; 3rd turn and final tightening (torque angle) → Torque angle: 110° 

Fig 19: Identifying Marking On Camshaft Bearing Cover, Cylinders 1 To 3

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• All markings can be read from the exhaust side/main diagram applies symmetrically for both cylinder heads 

1. Matching number for cylinder head/intake camshaft bearing cover, cylinder 1 (E1)
2. Matching number for cylinder head/intake camshaft bearing cover, cylinder 2 (E2)
3. Matching number for cylinder head/intake camshaft bearing cover, cylinder 3 (E3)
4. Matching number for cylinder head/outlet camshaft bearing cover, cylinder 1 (A1)
5. Matching number for cylinder head/outlet camshaft bearing cover, cylinder 2 (A2)
6. Matching number for cylinder head/outlet camshaft bearing cover, cylinder 3 (A3)

   arrow  - Direction of travel

   Fig 20: Locating Marking On Camshafts

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1-3  - Cylinders 1 to 3

4-6  - Cylinders 4 to 6

-  - Outlet camshaft identification (green)

-  - Intake camshaft identification (white)

arrow  - Direction of travel

1. 1  - Camshaft (outlet)
2. 2  - Camshaft (intake)
3. 3  - Hydraulic valve for variable valve-lift control
4. 4  - Screw, M5 x 12 → Tightening torque: 6 Nm (4.5 ftlb.) 
5. 5  - Switching tappet (oil with engine oil)
6. 6  - Flat-base tappet (oil with engine oil)
7. 8  - Mounting saddle 1 to 3
8. 9  - Stopper
Fig 21: Identifying Cylinder Head Camshafts, Cylinders 1 To 3
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-  - Bearing locations (oil with engine oil)

1. Screw, M6 x 35 → Tightening torque: 13 Nm (9.5 ftlb.) 
2. Bearing cover
3. Dowel sleeve
4. Bearing cover (intake)
5. Bearing cover (outlet)
6. Screw, M6 x 70 → Tightening torque: 13 Nm (9.5 ftlb.) 
Fig 22: Identifying Camshaft Mount, Cylinder Bank 1 To 3
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-  - Bearing surfaces (oil with engine oil)

1. Switching tappet (oil with engine oil)
2. Flat-base tappet (oil with engine oil)
3. Camshaft (intake)
4. Driver for drive coupling for high-pressure pump
5. Fuse (not functionally relevant if not installed)
6. Hydraulic valve for variable valve-lift control
7. Screw, M5 x 12 → Tightening torque: 6 Nm (4.5 ftlb.) 
8. Camshaft (outlet)
9. Stopper
10. Mounting saddle, cylinders 4 to 6
11. Stopper
Fig 23: Identifying Cylinder Head Camshafts, Cylinders 4 To 6
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1. Dowel sleeves
2. Bearing cover (intake)
3. Screw, M6 x 70 → Tightening torque: 13 Nm (9.5 ftlb.) 
4. Bearing cover
5. Screw, M6 x 35 → Tightening torque: 13 Nm (9.5 ftlb.) 
6. Bearing cover (outlet)
Fig 24: Identifying Camshaft Mount, Cylinder Bank 4 To 6
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-  - Bearing surfaces (oil with engine oil)

1. Threaded peg → Tightening torque: 35 Nm (26 ftlb.) 
2. Threaded peg → Tightening torque: 20 Nm (15 ftlb.) 
3. Guide rail
4. Tensioning rail
5. Chain tensioner with sealing ring; always replace sealing ring; do not confuse V6 chain tensioner with V8 chain tensioner  , color of V6 chain tensioner is different to the V8 chain tensioner → Tightening torque: 60 Nm (44 ftlb.) 

   arrow  - Direction of travel

   Fig 25: Identifying Guide Rail And Tensioning Rail

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1. Joint flange (oil sealing lip with engine oil); align with sleeve or vibration balancer
2. Aluminum screw  M6 x 55; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
3. Aluminum screw  M6 x 20; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
4. Chain tensioner (Do not confuse V6 chain tensioner with V8 chain tensioner  , color of V6 chain tensioner is different to the V8 chain tensioner) → Tightening torque: 60 Nm (44 ftlb.)  and sealing ring; always replace sealing ring

Fig 26: Identifying Timing-Case Cover - Chain Tensioner Sealing Flange

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1. Aluminum screw  , M6 x 20; hall sender (phase sensor); always use new aluminum screws → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
2. Hall sender
3. Sealing ring
4. Valve cover seal
5. Valve cover seal, inner
6. Seal for hydraulic valve for camshaft control
7. Valve cover for cylinders 1 to 4 (align over bar ignition modules)
8. Oil cap
Fig 27: Identifying Valve Cover Seals, Fitted On Cylinder Bank 1 To 3
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1. Valve cover for cylinders 4 to 6 (align over bar ignition modules)
2. Hall sender
3. Aluminum screw  , M6 x 20; hall sender (phase sensor); always use new aluminum screws → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
4. Sealing ring
5. Valve cover seal
6. Valve cover seal, inner
7. Seal for hydraulic valve for camshaft control
Fig 28: Identifying Valve Cover Seals, Fitted On Cylinder Bank 4 To 6
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1. Bar ignition module
2. Valve cover for cylinder bank 1 to 3 (align over bar ignition modules)
3. Aluminum screw  , M6 x 30; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
4. Cap
5. Steel screw  to eyelet → Tightening torque: 23 Nm (17 ftlb.) 
6. Eyelet
7. Aluminum screw  , M8 x 35 (on torque support); always use new aluminum screws; → Initial tightening: 10 Nm (7.5 ftlb.)  and → Final tightening: 90° Steel screw  to eyelet.
8. Aluminum screw  , M6 x 20; bar ignition module; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
Fig 29: Identifying Valve Cover, Mounting For Cylinder Bank 1 To 3
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1. Valve cover for cylinder bank 4 to 6 (align over bar ignition modules)
2. Eyelet
3. Steel screw  to eyelet → Tightening torque: 23 Nm (17 ftlb.) 
4. Aluminum screw  , M6 x 30; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
5. Bar ignition module
6. Aluminum screw  , M6 x 20; bar ignition module; always use new aluminum screws; → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 
7. Sheetmetal holder
8. Cap
   Fig 30: Identifying Valve Cover, Mounting For Cylinder Bank 4 To 6

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   Fig 31: Tightening Sequence For Cylinder Head Cover, Cylinder Bank 1 To 3

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Fig 32: Tightening Sequence For Cylinder Head Cover, Cylinder Bank 4 To 6

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1. Crankshaft sprocket
2. Friction plates/diamond washers; reusable 
3. Drive chain for oil pump balance shaft module
4. Screw securing timing chain (screw into crankcase)
Fig 33: Oil Pump Chain Drive On Chain Pinion
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-  - Guide and tensioning rail module

-  - Fastening screws (for tightening specifications, see oil pump)

-  - Spring wedge for crankshaft

Fig 34: Identifying Oil Pump Chain Guide
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1. Drive chain for oil pump balance shaft module
2. Guide and tensioning rail module
3. Fastening screw, M6 x 35 → Tightening torque: 13 Nm (9.5 ftlb.) 
4. Fastening screws, M6 x 20 → Tightening torque: 13 Nm (9.5 ftlb.) 

Fig 35: Identifying Oil Pump With Balance Shaft
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1. Oil pump with balance shaft
2. Dowel sleeve
3. Screw, M8 x 50 (4 ea.); 1st turn → Initial tightening: 10 Nm (7.5 ftlb.)  ; Final tightening (torque angle) → Torque angle: 80° 
4. Screw, M8 x 70 (1 ea.); 1st turn → Initial tightening: 10 Nm (7.5 ftlb.)  ; Final tightening (torque angle) → Torque angle: 110° 
5. Screw, M8 x 100 (1 ea.); 1st turn → Initial tightening: 10 Nm (7.5 ftlb.)  ; Final tightening (torque angle) → Torque angle: 120° 
6. Screw, M10 x 45; replace; 1st turn → Initial tightening: 20 Nm (15 ftlb.)  ; Final tightening (torque angle) → Torque angle: 30° 
7. Drive chain
8. Screw, M8 x 22; replace; 1st turn → Initial tightening: 20 Nm (15 ftlb.)  ; Final tightening (torque angle) → Torque angle: 90° 
9. Oil pump sprocket
10. Solenoid valve
11. Sealing rings (grease before fitting)
12. Cap screw, M36 → Tightening torque: 40 Nm (30 ftlb.) 

    arrow A  - View A; top view of balance weight on balance shaft; staking position using 6-mm drill bit or staking pin

    SW 36  - 36 mm across flats (a/f); counter with an open-ended wrench

    Fig 36: Tightening Specifications For Oil Pump And Staking Position Of Balance Shaft With Respect To Oil Pump

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Fig 37: Identifying Oil Pipes, Fitted On Oil Pump And Oil Guide Housing
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1. Oil pressure pipe
2. Sealing ring; oil before fitting
3. Sealing ring; oil before fitting
4. Oil regulating line
5. Sealing ring; oil before fitting
6. Sealing ring; oil before fitting
7. Oil pump intake manifold
8. Oil pipes to oil pump and oil guide housing → Tightening torque: 12 Nm (9 ftlb.) 
9. Oil pipes to oil pump and oil guide housing → Tightening torque: 12 Nm (9 ftlb.) 
10. Sprocket cover
11. Fastening screws on sprocket cover → Tightening torque: 12 Nm (9 ftlb.) 
    Fig 38: Identifying Oil Pipes, Fitted On Oil Pump And Oil Guide Housing (View Without Oil Pan)

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Fig 39: Identifying Oil Pressure Sensor
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1. Stopper → Tightening torque: 15 Nm (11 ftlb.) 
2. Sealing ring
3. Oil-pressure sensor adapter
4. Sealing ring
5. Oil-pressure sender with temperature sensor
6. Screw, M6 x 40 → Tightening torque: 10 Nm (7.5 ftlb.) 

Fig 40: Identifying Oil Guide Housing For Oil Filter Heat Exchanger (2WD)
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1. Oil guide housing
2. Oil/water heat exchanger
3. Screw, M6 x 20; self-tapping screws ex-works; metric screws can also be used → Tightening torque: 10 Nm (7.5 ftlb.) 
4. Heat exchanger seal
5. Heat exchanger clip
6. Oil-filter cover → Tightening torque: 25 Nm (19 ftlb.) 
7. Oil filter
8. Oil-filter sealing ring
9. Oil duct adapter (cannot be replaced)

Fig 41: Identifying Oil Guide Housing For Oil Filter Heat Exchanger (4WD)
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1. Oil guide housing
2. Oil/water heat exchanger
3. Screw, M6 x 20; self-tapping screws ex-works; metric screws can also be used → Tightening torque: 10 Nm (7.5 ftlb.) 
4. Heat exchanger seal
5. Heat exchanger clip
6. Oil-filter cover → Tightening torque: 25 Nm (19 ftlb.) 
7. Oil filter
8. Oil-filter sealing ring
9. Oil duct adapter (cannot be replaced)

Fig 42: Identifying Oil Return Oil Plate (2WD)
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1. Oil guide (oil plate)
2. Oil return seal
3. Screw, M6 x 20 → Tightening torque: 10 Nm (7.5 ftlb.) 

Fig 43: Identifying Oil Return Oil Plate (4WD)
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1. Oil guide (oil plate)
2. Oil return seal
3. Screw, M6 x 20 → Tightening torque: 10 Nm (7.5 ftlb.) 

1. Sealant application (geometry, sealing bead 1 mm); Doboseal 224N (999.915.573.43, status 01/10)
   Fig 44: Identifying Seal Applying Area On Oil Guide Housing (2WD)

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1. Sealant application (geometry, sealing bead 1 mm); Doboseal 224N (999.915.573.43, status 01/10)
Fig 45: Identifying Seal Applying Area On Oil Guide Housing (4WD)
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Fig 46: Identifying Oil Pan
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1. Oil pan
2. Seal; replace following removal
3. Seal; replace following removal
4. Oil drain plug, M18; aluminum screw; can be reused → Tightening torque: 30 Nm (22 ftlb.) 
5. Screw, M6 x 20 → Tightening torque: 10 Nm (7.5 ftlb.) 

Fig 47: Identifying Water Guide For Heating Pipe/Collection Pipe
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1. Heating coolant pipe
2. Screw plug → Tightening torque: 15 Nm (11 ftlb.) 
3. Sealing ring
4. Screw, M6 → Tightening torque: 12 Nm (9 ftlb.) 
5. Sealing ring
6. Screw plug → Tightening torque: 30 Nm (22 ftlb.) 
7. Screw → Tightening torque: 12 Nm (9 ftlb.) 
8. Coolant guide tube (collection pipe)
9. Sheetmetal seal
10. Stopper

Fig 48: Identifying Cooling Water Return Hose Ahead Of Belt Drive
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1. Connection piece on generator
2. Screw for connection piece → Tightening torque: 10 Nm (7.5 ftlb.) 
3. Screw, M6 x 20 → Tightening torque: 10 Nm (7.5 ftlb.) 
4. Coolant return line
5. Coolant return hose assembly
6. Holder
7. Screw, M6 Aluminum screw  ; always use new aluminum screws → Initial tightening: 4 Nm (3 ftlb.)  and → Final tightening: 90° 

Fig 49: Identifying Cooling Water Supply Hose
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1. Coolant supply hose for oil/coolant heat exchanger
2. Screw for connection piece → Tightening torque: 10 Nm (7.5 ftlb.) 
3. Coolant supply hose to generator
4. Connection piece on generator
5. Coolant pipe
6. Screw, M6; coolant line to collection pipe → Tightening torque: 10 Nm (7.5 ftlb.) 

Fig 50: Identifying Vent Line And Screw
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1. Screw, M6 x 16 → Tightening torque: 10 Nm (7.5 ftlb.) 
2. Vent line

Fig 51: Identifying Intake-Air Distributor - V6
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1. Intake module
2. Decoupling module (fastening part); observe correct tightening sequence → Tightening torque: 10 Nm (7.5 ftlb.) 
3. Intake module seal; check that seal is aligned and fitted correctly! 
4. Heat socket
5. Screw, 5 x 16 → Tightening torque: 2 Nm (1.5 ftlb.) 
6. Screw, 6 x 45 → Tightening torque: 7 Nm (5 ftlb.) 
7. Electronic accelerator
8. Seal
9. Ball socket

Fig 52: Identifying Pressure Sensor, Actuators, Vacuum Line And Screws
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1. 1  - Pressure sensor
2. 2  - Screw → Tightening torque: 7 Nm (5 ftlb.) 
3. 3 to 10  - Actuators
4. 7  - Vacuum line
5. 8  - Screw, M5 x 16 → Tightening torque: 4 Nm (3 ftlb.) 
   Fig 53: Intake-Air Distributor Tightening Sequence

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Fig 54: Identifying Fuel Distributor Pipe
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1. Fuel distributor pipe (fuel gallery)
2. Stopper; in 3 turns (tighten, loosen, tighten) → Tightening torque: 25 Nm (19 ftlb.) 
3. High-pressure sensor → Tightening torque: 20 Nm (15 ftlb.) 

Fig 55: Identifying Fuel Injectors
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1. Twin holder (retainer for two injectors) => for cylinders 2 to 3 and 4 to 5
2. Screw, M8 x 30 → Tightening torque: 23 Nm (17 ftlb.) 
3. Single holder (retainer for one injector) => for cylinders 1 and 6
4. Injector (high-pressure fuel injector)

Fig 56: Identifying Fuel Distributor Pipe 2
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1. Screw, M6 x 16 → Tightening torque: 10 Nm (7.5 ftlb.) 
2. Screw, M6 x 25 → Tightening torque: 10 Nm (7.5 ftlb.) 

-  - Connection to injector (high-pressure fuel injector); in 3 turns (tighten, loosen, tighten) → Tightening torque: 25 Nm (19 ftlb.) 

Fig 57: Identifying High-Pressure Pump
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1. High-pressure pump
2. High-pressure line; (3 turns: tighten, loosen, tighten) → Tightening torque: 25 Nm (19 ftlb.) 
3. Low-pressure line; M6 screw → Tightening torque: 10 Nm (7.5 ftlb.)  and connection to high-pressure pump low-pressure line; (3 turns: tighten, loosen, tighten); counter at hexagon on high-pressure pump → Tightening torque: 25 Nm (19 ftlb.) 
4. Screw socket, M8 → Tightening torque: 23 Nm (17 ftlb.) 
5. Screw socket, M6 → Tightening torque: 10 Nm (7.5 ftlb.) 
6. Protective plate
7. Screw, M6 x 20 → Tightening torque: 10 Nm (7.5 ftlb.) 

-  - Required line distance (5 to 8 mm) between components

Fig 58: Identifying Vacuum Pump
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1. Vacuum pump
2. Screw, M6 x 25 → Tightening torque: 10 Nm (7.5 ftlb.) 
3. Sealing ring
4. Sealing ring

Fig 59: Identifying Exhaust Manifold Seal, Cylinders 1 To 3
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1. Exhaust manifold
2. Studs M8;
3. Hexagon nut, M8; replace; (check nuts by clicking once); observe tightening sequence → Tightening torque: 27 Nm (20 ftlb.) (check nuts by clicking once) 

-  - Exhaust manifold seal

-  - M6 screw; heat shield to exhaust manifold; → Tightening torque: 10 Nm (7.5 ftlb.) 

Fig 60: Identifying Exhaust Manifold Seal, Cylinders 4 To 6
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1. Exhaust manifold
2. Seal
3. Hexagon nut, M8; replace; (check nuts by clicking once); observe tightening sequence → Tightening torque: 27 Nm (20 ftlb.) (check nuts by clicking once) 
4. M6 screw; heat shield to exhaust manifold; → Tightening torque: 10 Nm (7.5 ftlb.) 
   Fig 61: Exhaust Manifold Tightening Sequence, Cylinders 1 To 3

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Fig 62: Exhaust Manifold Tightening Sequence, Cylinders 4 To 6

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