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2.0l - Lubrication - Engine Code(s): Caeb (sedan) Audi A4 B8

Lubrication System 29 illustrations ~2484 words

ENGINE OIL

Viscosity classes, oil specifications and oil capacities, refer to MAINTENANCE, DIAGNOSIS

OIL PAN AND OIL PUMP OVERVIEW

Note. If large quantities of metal particles or other deposits such as those caused by partial seizure of the crankshaft or connecting rod damage are found in the engine oil, clean the oil channels thoroughly and replace the engine oil cooler to prevent further damage.

Oil pressure, checking, refer to OIL PRESSURE, CHECKING .

Scheme 1

Scheme 1: OIL PAN AND OIL PUMP OVERVIEW
Scheme 1: OIL PAN AND OIL PUMP OVERVIEW
  1. Oil Level Thermal Sensor -G266
  2. Gasket Replace
  3. Bolt Replace Tightening sequence (Scheme 2)
  4. Lower Oil Pan Removing and installing, refer to «LOWER OIL PAN»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__lower-oil-pan)
  5. Oil Baffle Replace
  6. Suction Line Clean strainer if contaminated.
  7. Bolt 9 Nm
  8. O-ring Replace Lubricate
  9. Oil Pump Removing and installing, refer to «OIL PUMP»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__oil-pump)
  10. Centering Sleeve
  11. O-ring Replace
  12. Oil Pressure Regulation Valve -N428- Removing and installing, refer to «Oil Pressure Regulation Valve -N428»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__oil-pressure-regulation-valve-n428)
  13. Bolt 9 Nm
  14. Chain Tensioner
  15. Drive Chain for Oil Pump Mark the running direction before removing.
  16. Bolt 9 Nm
  17. Gasket Replace
  18. Oil Separator Removing and installing, refer to «OIL SEPARATOR»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__oil-separator)
  19. Bolt Tightening sequence (Scheme 4)
  20. Upper Oil Pan Removing and installing, refer to «UPPER OIL PAN»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__upper-oil-pan)
  21. Bolt Replace Tightening sequence (Scheme 3)
  22. Bolt Replace Tightening sequence (Scheme 3)
  23. Bolt 20 Nm
  24. Gasket
  25. Bolt 9 Nm
  26. Gasket
  27. Non-Return Valve
  28. Oil Drain Plug 30 Nm Replace
  29. Nut 9 Nm

Scheme 2

Scheme 2
Scheme 2

Tighten the bolts -1 through 19- in 2 stages as follows

Tighten the bolts to 8 Nm.

Tighten the bolts an additional 45°.

Scheme 3

Scheme 3
Scheme 3

Tighten the bolts -1 through 13- in 2 stages as follows

1. Tighten the bolts to 15 Nm.

2. Tighten the bolts an additional 90°.

Scheme 4

Scheme 4
Scheme 4

Tighten the bolts to 9 Nm in the following sequence: -1 to 9-.

Scheme 5

Scheme 5: OIL FILTER, OIL COOLER AND OIL PRESSURE SWITCH OVERVIEW
Scheme 5: OIL FILTER, OIL COOLER AND OIL PRESSURE SWITCH OVERVIEW
  1. Bracket for Assemblies Removing and installing, refer to «ACCESSORY ASSEMBLY BRACKET»(/audi/a4/b8-2007-2012/remont/mechanical/#20l-crankshaft-cylinder-block-engine-codes-caeb-sedan__accessory-assembly-bracket)
  2. Oil Pressure Switch -F22- 20 Nm Blue insulation Removing and installing, refer to «Oil Pressure Switch -F22»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__oil-pressure-switch-f22) Check vehicle diagnostic tester in the "Guided Fault Finding" function
  3. Seal Replace
  4. Gasket Replace
  5. O-ring No replacement part, part of the valve unit delivery package
  6. O-ring No replacement part, part of the valve unit delivery package
  7. Valve Unit With O-rings
  8. Oil Filter Element Removing and installing, refer to «MAINTENANCE PROCEDURES»(/audi/a4/b8-2007-2012/remont/procedures/#how-to-diagnosis-the-maintenance-maintenance-procedures-sedan) Remove and install using oil filter wrench3417
  9. Seal Replace
  10. Reduced Oil Pressure Switch -F378- 20 Nm Brown insulation Removing and installing, refer to «Reduced Oil Pressure Switch -F378»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__reduced-oil-pressure-switch-f378) Check vehicle diagnostic tester in the "Guided Fault Finding" function
  11. Bolt 23 Nm
  12. Connection
  13. Seal Replace Coat with coolant additive
  14. Engine Oil Cooler See note under «OIL PAN AND OIL PUMP OVERVIEW»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__oil-pan-and-oil-pump-overview) Ensure sufficient clearance to surrounding components Removing and installing, refer to «ENGINE OIL COOLER»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__engine-oil-cooler)
  15. Gasket Replace
  16. Bolt Tightening sequence (Scheme 6)

Scheme 6

Scheme 6
Scheme 6

FASTENER TIGHTENING SPECIFICATIONS

ComponentBolt SizeNm
Chain tensioner9
Engine oil cooler23
Oil baffle9
Oil drain plug 130
Oil level thermal sensor, nut9
Oil pump20
Oil pressure regulation valve9
Oil pressure switch20
Reduced oil pressure switch20
Suction line9
1 Always replace

Lower Oil Pan, Tightening Sequence

Tighten the bolts -1 through 19- in 2 stages as follows

Tighten the bolts to 8 Nm.

Tighten the bolts an additional 45°.

Upper Oil Pan, Tightening Sequence

Tighten the bolts -1 through 13- in 2 stages as follows

1. Tighten the bolts to 15 Nm.

2. Tighten the bolts an additional 90°.

OIL PRESSURE SWITCH, CHECKING

Check the oil pressure switch, see vehicle diagnostic tester in the "Guided Fault Finding" function.

OIL PRESSURE, CHECKING

Special tools and workshop equipment required

  1. Oil Pressure Gauge V.A.G 1342

Test Prerequisites

  1. Oil level OK
  2. Engine oil temperature at least 80 °C (176 °F) (radiator fan must start up once).

Test Sequence

Note. Place a cloth under the accessory assembly bracket to collect leaking engine oil.

Disconnect the electrical connector -4- on the reduced oil pressure switch -F378-.

Scheme 7

Scheme 7
Scheme 7

Remove the reduced oil pressure switch -3-.

Screw the V.A.G 1342 into the oil filter bracket in place of the oil pressure switch.

Install the reduced oil pressure switch -- in the V.A.G 1342.

Start the engine.

  1. Oil pressure at idle: 1.2 to 2.1 bar.
  2. Oil pressure at 2000 RPM: 1.6 to 2.1 bar positive pressure.
  3. Oil pressure at 3700 RPM: 3.0 to 4.0 bar positive pressure.

Note. During the break-in phase, the oil pressure may be at 2000/min at 3.0 to 4.0 bar.

Assembling

  1. For the correct tightening specifications, refer to «OIL FILTER, OIL COOLER AND OIL PRESSURE SWITCH OVERVIEW»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan) .

Install the oil pressure switch.

OIL LEVEL, CHECKING

Check the oil level. Refer to MAINTENANCE PROCEDURES

OIL SEPARATOR

Special tools and workshop equipment required

  1. Engine Support Bridge 10 - 222 A

Removing

Support the engine. Refer to ENGINE, SUPPORT WITH ENGINE SUPPORT BRIDGE .

Loosen the hose clamps -arrows- and remove the air guide hose.

Scheme 8

Scheme 8
Scheme 8

Remove the left front wheel.

Remove the noise insulation. Refer to Description and Operation .

Remove the left wheel housing liner. Refer to Removal and Installation .

Remove the left engine mount bolt -1-.

Scheme 9

Scheme 9
Scheme 9

Remove the left engine support.

Remove the oil separator -1 through 9-.

Installing

Install in reverse order of removal. Note the following

Oil separator tightening sequence. (Scheme 4)

  1. For the correct tightening specifications, refer to «SUBFRAME MOUNT OVERVIEW»(/audi/a4/b8-2007-2012/remont/mechanical/#20l-engine-assembly-engine-codes-caeb-sedan)

LOWER OIL PAN

Special tools and workshop equipment required

  1. Used Oil Collecting and Extracting Device V.A.G 1782
  2. Hand drill with plastic brush attachment
  3. Protective goggles
  4. Silicone sealant

Removing

Remove the noise insulation. Refer to Description and Operation .

Remove the crossbrace -4-. Refer to Removal and Installation .

Scheme 10

Scheme 10
Scheme 10

Remove the stabilizer bar -1-. Refer to Removal and Installation .

Remove the bolts -2- and nuts -3-.

Move the steering gear -5- slightly to the right, lower it approximately 10 cm and then tie it up.

CAUTIONRisk of damaging the oil lines and hoses. Do not stretch, kink or bend oil lines and hoses.
CAUTIONSuspension components could be damaged. Never rest the vehicle on its wheels if the subframe mount, steering gear or subframe crossbrace are not installed correctly. Do not support the vehicle on the subframe or the subframe crossbrace, for example, by a floor jack or similar device.

Remove bolt -arrow-.

Scheme 11

Scheme 11
Scheme 11

Remove the steering column -1- from the steering gear -2-.

Place the V.A.G 1782 under the engine and drain the engine oil.

Note. Observe disposal regulations!

Disconnect the connector from the oil level thermal sensor -G266- -arrow-.

Scheme 12

Scheme 12
Scheme 12

Remove the oil level thermal sensor.

Remove the bolts -1 through 19-.

Remove oil pan, if necessary loosen by applying light strikes with a rubber hammer.

Installing

  1. For the correct tightening specifications, refer to «OIL PAN AND OIL PUMP OVERVIEW»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__oil-pan-and-oil-pump-overview)
  1. Silicone sealant

Note. Note the expiration date of the silicone sealant. The oil pan must be installed within 5 minutes after application of silicone sealant. Replace the bolts which are being tightened with an additional turn. Replace sealing rings, seals and self-locking nuts.

Spray the sealing surface with sealant remover and allow it to work.

Remove any sealant residue on the upper oil pan using a flat blade scraper.

WARNINGRisk of eye injury. Wear protective goggles.

Remove any remaining sealant on lower oil pan using for example a rotating plastic brush.

Scheme 13

Scheme 13
Scheme 13

Clean sealing surfaces, must be free of oil and grease.

Cut the tube nozzle at the front marking (nozzle diameter: approximately 3 mm).

Scheme 14

Scheme 14
Scheme 14

Apply silicon sealant to clean sealing surfaces of the lower oil pan as shown in illustration.

Scheme 15

Scheme 15
Scheme 15
  1. Thickness of sealant bead: 2 to 3 mm

Note. The oil pan must be installed within 5 minutes after application of silicon sealant. The sealant bead may not be thicker than specified, otherwise excess sealant could enter the oil pan and clog the oil intake tube.

Position the lower section of the oil pan immediately and tighten the bolts, tightening sequence. (Scheme 2)

Note. After installing oil pan, allow sealant to dry for approximately 30 minutes. Only after then may the engine oil be replenished.

Fill the engine oil and check the level. Refer to MAINTENANCE PROCEDURES

Install the steering gear. Refer to Removal and Installation .

Install stabilizer bar. Refer to Removal and Installation .

Install the crossbrace. Refer to Removal and Installation .

Install the noise insulation. Refer to Description and Operation .

Assemble in reverse order of disassembly.

OIL PUMP

Special tools and workshop equipment required

  1. Assembly Tool T10118
  2. Locking Tool T40265

Removing

Remove the lower oil pan. Refer to LOWER OIL PAN .

Remove the oil baffle -arrows-.

Scheme 16

Scheme 16
Scheme 16

Pull the chain tensioner spring with the T10118 in the direction of the -arrow- and secure it with the T40265.

Scheme 17

Scheme 17
Scheme 17

Remove the bolts -arrows- and the oil pump.

Scheme 18

Scheme 18
Scheme 18

Installing

Install in reverse order of removal. Note the following

  1. Tightening specifications, refer to «OIL PAN AND OIL PUMP OVERVIEW»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__oil-pan-and-oil-pump-overview) .

Make sure both alignment bushings for centering the oil pump are in there.

Install the chain sprocket for the oil pump and then install the oil pump.

CAUTIONDanger of causing damage to the engine. The following procedure must be observed otherwise the chain tensioner spring does not spring into the installed position

Pull the chain tensioner spring with the T10118 in the direction of the -arrow- and remove the T40265.

Insert the new oil baffle and attach it.

Note. There are plastic ribs on the oil baffle that deform permanently when tightening. The plastic ribs ensure the oil baffle is not loosen and does not rattle. Because of this, always replace the oil baffle.

Install lower oil pan. Refer to LOWER OIL PAN .

Fill the engine oil and check the level. Refer to MAINTENANCE PROCEDURES

UPPER OIL PAN

Special tools and workshop equipment required

  1. Assembly Tool T10118
  2. Locking Tool T40265
  3. Hand drill with plastic brush attachment
  4. Protective goggles
  5. Silicone sealant

Removing

Remove the transmission. Refer to Removal and Installation .

Remove the lower oil pan. Refer to LOWER OIL PAN .

Remove the rear sealing flange. Refer to SEALING FLANGE, TRANSMISSION SIDE .

Remove the oil pump. Refer to OIL PUMP .

Disconnect the connector -1-.

Scheme 19

Scheme 19
Scheme 19

Remove the bolts -arrows-.

Scheme 20

Scheme 20
Scheme 20

Remove the bolts -1 through 13- and the upper oil pan.

CAUTIONFirst pry the upper oil pan out on the transmission side. When prying out, be careful not to bend the timing chain cover.

Installing

  1. Tightening specifications, refer to «OIL PAN AND OIL PUMP OVERVIEW»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__oil-pan-and-oil-pump-overview) .
  1. Silicone sealant

Note. Note the expiration date of the silicone sealant. The upper oil pan must be installed within 5 minutes after application of silicone sealant. Replace the bolts which are being tightened with an additional turn. Replace sealing rings, seals and self-locking nuts.

Remove sealant residue from cylinder block with a flat scraper.

WARNINGRisk of eye injury. Wear protective goggles.

Remove any remaining sealant on the upper oil pan using for example a rotating plastic brush.

Scheme 21

Scheme 21
Scheme 21

Note. See if the timing chain cover is deformed. Then mount the top section of the oil pan without any sealant and check the gap between the cover and the top section. If deformation is found and the cover cannot be aligned, replace the cover after installing the upper oil pan.

Clean sealing surfaces, must be free of oil and grease.

Make sure the oil passages in the upper oil pan and in the cylinder crankcase are clean.

Cut the tube nozzle at the front marking (nozzle diameter: approximately 2 mm).

Apply silicone sealant to clean sealing surface upper oil pan as shown in the illustration -arrows-.

Scheme 22

Scheme 22
Scheme 22
CAUTIONThe lubrication system could be plugged with excess sealant. Do not apply sealant bead thicker than indicated.
  1. Thickness of sealant bead: 2 to 3 mm

Note. The upper oil pan must be installed within 5 minutes after application of silicone sealant. The sealant bead may not be thicker than specified, otherwise excess sealant could enter the oil pan and clog the oil intake tube.

  1. On the transmission side, the upper section of the oil pan and the crankcase must align.

Position the upper section of the oil pan immediately and tighten the bolts, tightening sequence (Scheme 3)

Install the bolts -arrows-. Tightening specifications, refer to item 13: TIMING CHAIN GUARDS, Camshaft Adjustment Valve 1 -N205- OVERVIEW .

Install the rear sealing flange. Refer to SEALING FLANGE, TRANSMISSION SIDE .

Install the oil pump. Refer to OIL PUMP .

Insert the new oil baffle and attach it.

Remove the lower oil pan section. Refer to LOWER OIL PAN .

Assemble in reverse order of disassembly.

Fill the engine oil and check the level. Refer to MAINTENANCE PROCEDURES

OIL PRESSURE REGULATION VALVE -N428

Special tools and workshop equipment required

  1. Used Oil Collecting and Extracting Device V.A.G 1782

Removing

Remove the noise insulation. Refer to Description and Operation .

Place the V.A.G 1782 under the engine.

Disconnect the connector -1-.

Remove the bolt -2- and the oil pressure regulation valve -3-.

Installing

Install in reverse order of removal. Note the following

  1. Tightening specifications, refer to «OIL PAN AND OIL PUMP OVERVIEW»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan__oil-pan-and-oil-pump-overview) .

Note. Replace O-ring.

ENGINE OIL COOLER

Special tools and workshop equipment required

  1. Drip Tray for VAS 6100 VAS 6208

Removing

WARNINGRisk of scalding due to hot steam and hot coolant. The coolant system is under pressure when the engine is warm. Reduce pressure by covering coolant reservoir cap with a cloth and carefully opening.

Drain the coolant. Refer to COOLANT, DRAINING AND FILLING .

Remove the accessory assembly bracket. Refer to ACCESSORY ASSEMBLY BRACKET .

Remove the bolts -4 and 5- and remove the engine oil cooler -3- together with the seal -2-.

Scheme 23

Scheme 23
Scheme 23

Installing

Install in reverse order of removal. Note the following

  1. For the correct tightening specifications, refer to «OIL FILTER, OIL COOLER AND OIL PRESSURE SWITCH OVERVIEW»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan) .

Note. Always replace gaskets and seals. Secure all hose connections with hose clamps appropriate for the model.

Install the engine oil cooler -3- with a new seal -2-.

Install the accessory assembly bracket. Refer to ACCESSORY ASSEMBLY BRACKET .

Fill the engine oil and check the level. Refer to MAINTENANCE PROCEDURES

OIL PRESSURE SWITCH -F22

Removing

Note. Place a cloth under the accessory assembly bracket to collect leaking engine oil.

Disconnect electrical connector -1- on oil pressure switch.

Remove the oil pressure switch -2-.

Installing

Install in reverse order of removal. Note the following

  1. Tightening specifications, refer to «OIL FILTER, OIL COOLER AND OIL PRESSURE SWITCH OVERVIEW»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan) .

Note. Replace the seal. To prevent coolant loss, insert the new oil pressure switch -- in the connecting pieces immediately.

Check the oil level. Refer to MAINTENANCE PROCEDURES

REDUCED OIL PRESSURE SWITCH -F378

Removing

Note. Place a cloth under the accessory assembly bracket to collect leaking engine oil.

Disconnect the electrical connector -4- on the reduced oil pressure switch --.

Remove the reduced oil pressure switch -3-.

Installing

Install in reverse order of removal. Note the following

  1. Tightening specifications, refer to «OIL FILTER, OIL COOLER AND OIL PRESSURE SWITCH OVERVIEW»(/audi/a4/b8-2007-2012/remont/lubrication-system/#20l-lubrication-engine-codes-caeb-sedan) .

Note. Replace the seal. To prevent coolant loss, insert the new reduced oil pressure switch -- in the connecting pieces immediately.

Check the oil level. Refer to MAINTENANCE PROCEDURES

SPECIAL TOOLS

Special tools and workshop equipment required

Scheme 24

Scheme 24: SPECIAL TOOLS
Scheme 24: SPECIAL TOOLS

Scheme 25

Scheme 25
Scheme 25

Scheme 26

Scheme 26
Scheme 26

Scheme 27

Scheme 27
Scheme 27

Scheme 28

Scheme 28
Scheme 28

Scheme 29

Scheme 29
Scheme 29
  1. Assembly Tool T10118
  2. Locking Tool T40265
  3. Oil Pressure Gauge V.A.G 1342
  4. Engine Support Bridge 10 - 222 A
  5. Used Oil Collecting and Extracting Device V.A.G 1782
  6. Drip Tray for VAS 6100 VAS 6208
  7. Not illustrated
  8. Counter Hold Tool T10355

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