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Final Drive, Differential (Continuously Variable Transmission 0aw (sedan)) Audi A4 B8

Axle Shafts 13 illustrations ~1615 words

GEAR OIL LEVEL IN FRONT FINAL DRIVE, CHECKING AND FILLING

Special tools and workshop equipment required

  1. Oil Collecting and Extracting Device V.A.G 1782
  2. Protective goggles

Procedure

Scheme 1

Scheme 1
Scheme 1
CAUTIONThere is a risk of damaging the transmission. After roughly September 2008, a new gear oil will be used in the production of "Multitronic 0AW FWD" transmissions. These transmissions have a filler plug -arrow- with inner-Torx and also have new transmission code letters. For transmissions before the change, the previous gear oil is used. These transmissions have a filler plug -arrow- with an inner hex socket. Do not mix the axles oil, not even in small quantities. This will cause the sealing rings to leak. Note the allocation of the axle oils according to the transmission code letters. Only axle oil for "Multitronic 0AW" which can be obtained as a replacement part must be used in front final drive. Replace the filler plug after checking the level. Always pay attention to the allocation according to the transmission codes, Compare the old and new filler plug to prevent leakage on the transmission.
  1. Gear oil temperature from approximately 20 °C (68 °F) (room temperature) to maximum 50 °C (122 °F).
  2. Move the vehicle onto a 4-column shop hoist or over a work pit so it is completely level.
  3. After stopping the engine, wait 5 minutes so that the gear oil can drip out.

Note. Read the general repair instructions, refer to REPAIR INFORMATION . Guidelines for clean working conditions when working on automatic transmission, refer to CLEAN WORKING CONDITIONS . Always maintain the specified transmission fluid level; the transmission is very sensitive to overfilling. After repairs where the gear oil is drained, for example, after removing the front final drive cover, the front final drive must be refilled with gear oil, refer to GEAR OIL IN FRONT FINAL DRIVE, FILLING AFTER REPAIR .

Remove the right drive axle cover -1- in the wheel housing.

Scheme 2

Scheme 2
Scheme 2

If present, remove the bolts -arrows- and remove the heat shield from the right drive axle.

Scheme 3

Scheme 3
Scheme 3

Position the V.A.G 1782 under the right side of the transmission.

Note. Follow all disposal regulations.

Remove locking plug -arrow-.

Check the oil level with a self made tool for example with a bent wire.

  1. Specified value: The oil level is correct if the front final drive is full, 20 mm under the lower edge of the oil fill hole.

Too little gear oil

CAUTIONThere is a risk of damaging the transmission. There are various gear oils for the "Multitronic 0AW transmission". The only gear oil that can be used is the one available as a replacement part for the transmission code letters. Do not mix the axles oil, not even in small quantities. This will cause the sealing rings to leak. Note the allocation of the axle oils according to the transmission code letters. Only axle oil for "Multitronic 0AW" which can be obtained as a replacement part must be used in front final drive. Replace the filler plug after checking the level. Always pay attention to the allocation according to the transmission codes, Compare the old and new filler plug to prevent leakage on the transmission. Mixing the gear oils, even in minimal amounts, is not allowed The result would be leaks in the transmission.

Fill a little with gear oil and wait 5 minutes.

  1. Note the allocation of the axle oils according to the transmission code letters.

Too much gear oil

Remove gear oil and wait 5 minutes.

Note. A waiting time of at least 5 minutes is required so that the internal oil level can equalize.

Repeat the oil level test until the oil level is correct.

  1. Replace the filler plug after checking the level. Always pay attention to the allocation according to the transmission codes.

Tighten the new sealing plug.

  1. Tightening specification, refer to «FRONT FINAL DRIVE, SHAFT SEAL OVERVIEW»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-0aw-sedan__front-final-drive-shaft-seal-overview) .

If equipped, install the drive axle heat shield (Scheme 4)

Scheme 4

Scheme 4
Scheme 4

GEAR OIL IN FRONT FINAL DRIVE, FILLING AFTER REPAIR

Special tools and workshop equipment required

  1. Oil Collecting and Extracting Device V.A.G 1782
  2. Protective goggles

Procedure

CAUTIONThere is a risk of damaging the transmission. After roughly September 2008, a new gear oil will be used in the production of "Multitronic 0AW FWD" transmissions. These transmissions have a filler plug -arrow- with inner-Torx and also have new transmission code letters. For transmissions from before the change, the previous gear oil is used. These transmissions have a filler plug -arrow- with an inner hex socket. Do not mix the axles oil, not even in small quantities. This will cause the sealing rings to leak. Note the allocation of the axle oils according to the transmission code letters. Only axle oil for "Multitronic 0AW" which can be obtained as a replacement part must be used in front final drive. Replace the filler plug after checking the level. Always pay attention to the allocation according to the transmission codes. Compare the old and new filler plug to prevent leakage on the transmission.

After repairs where the gear oil is drained, for example, after removing the front final drive cover, the front final drive must be refilled with gear oil.

Scheme 5

Scheme 5
Scheme 5

The pre-filling should take place before installing the transmission so that there is enough time for the internal oil equalization to transpire.

Conditions

  1. Drain the gear oil, for example after removing the cover for the front final drive.
  2. Reinstall the front final drive cover.

For currently removed transmission, remove the sealing plug -arrow-.

Fill with 0.8 Liters of gear oil, but pay attention to the transmission code letters when allocating gear oil.

Note. Wait approximately 35 minutes when pre-filling for an already installed transmission so that the internal oil equalization in the front final drive has time to occur. Only in this way can the gear oil be correctly adjusted.

Install the sealing plug -arrow-.

After installing the transmission, check and adjust the gear oil level in the front final drive, refer to GEAR OIL LEVEL IN FRONT FINAL DRIVE, CHECKING AND FILLING .

Scheme 6

Scheme 6: GEAR OIL DRAIN AND TRANSMISSION INSPECTION PLUG OVERVIEW
Scheme 6: GEAR OIL DRAIN AND TRANSMISSION INSPECTION PLUG OVERVIEW
  1. ATF Fill and Inspection Plug Tightening specification «ATF LEVEL CHECKING, DRAINING AND FILLING OVERVIEW»(/audi/a4/b8-2007-2012/remont/automatic-trans/#controls-housing-continuously-variable-transmission-0aw-sedan)
  2. ATF Oil Level Tube Different equipment depending on version Always replace if removed
  3. O-ring Different equipment depending on version Not available individually Insert in the oil level tube groove
  4. Fill and Inspection Plug 30 Nm Replace For the transmission fluid inside the front final drive

FRONT FINAL DRIVE, SHAFT SEAL OVERVIEW

Scheme 7

Scheme 7: FRONT FINAL DRIVE, SHAFT SEAL OVERVIEW
Scheme 7: FRONT FINAL DRIVE, SHAFT SEAL OVERVIEW
  1. Shaft Seal For the left flange shaft Removing and installing, refer to «LEFT FLANGE SHAFT SEAL»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-0aw-sedan__left-flange-shaft-seal)
  2. Differential
  3. Bolt Tightening specification and sequence. Refer to «Specifications»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-internal-components-0aw-sedan)
  4. Shaft Seal For the right flange shaft Removing and installing, refer to «RIGHT FLANGE SHAFT SEAL»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-0aw-sedan__right-flange-shaft-seal)
  5. Right Flange Shaft Removing and installing, refer to «RIGHT FLANGE SHAFT»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-0aw-sedan__right-flange-shaft)
  6. Locking Ring Removing and installing, refer to «RIGHT FLANGE SHAFT»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-0aw-sedan__right-flange-shaft)
  7. Fill and Inspection Plug Tightening specification «GEAR OIL DRAIN AND TRANSMISSION INSPECTION PLUG OVERVIEW»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-0aw-sedan) .
  8. Front Final Drive Cover Pay attention to the alignment sleeves Removing and installing, refer to «Description and Operation»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-internal-components-0aw-sedan) After removing the cover for the front final drive, perform the pre-filling, refer to «GEAR OIL IN FRONT FINAL DRIVE, FILLING AFTER REPAIR»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-0aw-sedan__gear-oil-in-front-final-drive)
  9. O-ring On the front final drive cover Replace
  10. Bolt Tightening specification, refer to «Specifications»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-internal-components-0aw-sedan)
  11. Gearshift Lever
  12. Shaft Seal For the gearshift shaft Removing and installing, refer to «SELECTOR SHAFT SEAL»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-0aw-sedan__selector-shaft-seal)
  13. Transmission
  14. Left Flange Shaft Removing and installing, refer to «LEFT FLANGE SHAFT»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-0aw-sedan__left-flange-shaft)
  15. Bolt Tightening specification, refer to «Specifications»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-internal-components-0aw-sedan)
  16. Bracket Removing and installing, refer to «Final Drive, Differential»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-internal-components-0aw-sedan)
  17. Ball Bearing For the left flange shaft Removing and installing, refer to «Removal and Installation»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-internal-components-0aw-sedan)
  18. Circlip Replace Removing and installing, refer to «Removal and Installation»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-internal-components-0aw-sedan)
  19. Shaft Seal For the input shaft Removing and installing, refer to «INPUT SHAFT SEAL»(/audi/a4/b8-2007-2012/remont/axle-shafts/#final-drive-differential-continuously-variable-transmission-0aw-sedan__input-shaft-seal)
  20. Dual Mass Flywheel Removing and installing, refer to «Removal and Installation»(/audi/a4/b8-2007-2012/remont/automatic-trans/#controls-housing-continuously-variable-transmission-internal-components-0aw-sedan)

FASTENER TIGHTENING SPECIFICATIONS

ComponentsFastener SizeNm
ATF fill and inspection plug 130
Fill and inspection plug for the transmission fluid inside the front final drive 130

INPUT SHAFT SEAL

Procedure

Note. The input shaft seal can only be replaced if the transmission is already removed.

Remove the transmission, refer to TRANSMISSION, REMOVING .

Replace the input shaft seal. Refer to Removal and Installation .

After installing the transmission. Refer to ATF, CHECKING LEVEL AND CORRECTING .

LEFT FLANGE SHAFT

Procedure

Note. The left flange shaft can only be removed and installed if the transmission is already removed.

Remove the transmission. Refer to TRANSMISSION, REMOVING .

Left flange shaft, Removing and installing. Refer to Removal and Installation .

After installing the transmission. Refer to GEAR OIL DRAIN AND TRANSMISSION INSPECTION PLUG OVERVIEW .

LEFT FLANGE SHAFT SEAL

Procedure

Note. The left flange shaft seal can only be replaced if the transmission is already removed.

Remove the transmission. Refer to TRANSMISSION, REMOVING .

Replace the left flange shaft seal. Refer to Removal and Installation .

After installing the transmission, check and adjust the gear oil level in the front final drive. Refer to GEAR OIL LEVEL IN FRONT FINAL DRIVE, CHECKING AND FILLING .

RIGHT FLANGE SHAFT

Special tools and workshop equipment required

  1. Needle Bearing Drift VW 295
  2. Slide Hammer-Complete Set VW 771
  3. Pulling Hook VW 771/13
  4. Retainer 3419
  5. Oil Collecting and Extracting Device V.A.G 1782
  6. M10 nut, quantity: 2
  7. Sealing grease G 052 128 A1

Removing

Remove the right front wheel. Refer to Removal and Installation .

Remove the right drive axle cover -1- in the wheel housing.

Remove the bolts -arrows- and remove the heat shield from the right drive axle.

Remove the right drive axle from the transmission flange shaft and move it back.

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

Scheme 8

Scheme 8
Scheme 8

Install the threaded eye from the 3419 into the threaded hole in the right flange shaft with 2 M10 nuts -1-.

Position the VW 771 with the VW 771/13 on the threaded eye and remove the flange shaft.

Installing

Scheme 9

Scheme 9
Scheme 9

Installation is carried out in the reverse order while noting the following

Note. Replace the circlip on the right flange shaft.

Clamp the flange shaft in a vise with jaw protectors. Remove the old circlip from the groove in the flange shaft using the new circlip -A-.

Check the right flange shaft seal for damage and replace if necessary. Refer to Removal and Installation .

Fill the space between the sealing and dust lip half way with sealing grease G 052 128 A1.

Drive the right flange shaft in using the VW 295.

Install the drive axle heat shield. (Scheme 4)

Attach the right drive axle to the transmission flange shafts. Refer to [For engine(s) CAEB, CALA, CCBA] Removal and Installation .

Install the right front wheel. Refer to Removal and Installation .

Gear oil level in front final drive, checking and filling. Refer to GEAR OIL DRAIN AND TRANSMISSION INSPECTION PLUG OVERVIEW .

RIGHT FLANGE SHAFT SEAL

Procedure

Remove the right flange shaft. Refer to RIGHT FLANGE SHAFT .

Replace the right flange shaft seal. Refer to Removal and Installation .

Install the right flange shaft. Refer to RIGHT FLANGE SHAFT .

Gear oil level in front final drive, checking and filling. Refer to GEAR OIL DRAIN AND TRANSMISSION INSPECTION PLUG OVERVIEW .

SELECTOR SHAFT SEAL

Procedure

Note. The selector shaft seal can only be replaced if the transmission is already removed.

Remove the transmission. Refer to TRANSMISSION, REMOVING .

Replace the selector shaft seal. Refer to Removal and Installation .

After installing the transmission, refer to ATF, CHECKING LEVEL AND CORRECTING .

SPECIAL TOOLS

Special tools and workshop equipment required

Scheme 10

Scheme 10: SPECIAL TOOLS
Scheme 10: SPECIAL TOOLS

Scheme 11

Scheme 11
Scheme 11

Scheme 12

Scheme 12
Scheme 12

Scheme 13

Scheme 13
Scheme 13
  1. Retainer 3419
  2. Oil Collecting and Extracting Device V.A.G 1782
  3. Needle Bearing Drift VW 295
  4. Slide Hammer-Complete Set VW 771
  5. Not illustrated
  6. Pulling Hook VW 771/13

Edition 8 24 2011

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