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Home >> Audi >> 2010 >> S4 Automatic DCT >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Gears & Shafts - Manual Transmission Internal Components 0B4 (Sedan)) >> 35 Gears, Shafts >> Output Shaft >> Overview - Output Shaft

Overview - Output Shaft

WARNING: This page is about a different variant/trim than selected.
NOTE:

Pay attention to the technical data when installing new gears or the output shaft. Refer to TRANSMISSION/ENGINE ALLOCATION .

Insert all needle bearings and synchronizer rings with transmission fluid.

When replacing synchronizer rings, the intermediate ring and synchronizer ring for the respective gear must be replaced together.

If the synchronizer rings are not to be replaced, make sure they are reallocated to their original gear.

Fig 1: Overview Of Output Shaft
GWWA35-10186Courtesy of AUDI OF AMERICA, LLC
  1. Transmission Housing
  2. Ball Bearing
  3. Plate
    • to lock the ball bearing in the transmission housing on
  4. Thrust Washer
  5. Reverse Gear Synchronizer Hub
    • Can be manually removed from the output shaft
  6. Reverse Gear Inner Race
    • Installation position. Refer to Figure
    • Differentiating the spring pins; refer to Fig 3
    • Replace if there are grooves or scoring
  7. Reverse Gear Intermediate Ring
    • Installation position. Refer to Figure
    • Differentiating the spring pins; refer to Fig 3
    • Checking for wear. Refer to Fig 6
  8. Synchronizer Ring for Reverse Gear
    • Installation position. Refer to Figure
    • Differentiating the spring pins; refer to Fig 3
    • Checking for wear. Refer to Fig 6
    • Replace if there are grooves or scoring
  9. Reverse Gear Wheel
    • with reverse gear locking collar
    • Locking collar and reverse gear selector gear, Disassembling and Assembling. Refer to Fig 2
  10. Bolt
    • Tightening specification. 24 Nm
  11. Needle Bearing
    • For reverse gear
  12. Inner Race/Needle Bearing
  13. Thrust Washer
    • For 1st gear and reverse gear selector gears
  14. 1st Gear Wheel
  15. 1st Gear Inner Race
    • Installation position. Refer to Figure
    • Differentiating the spring pins; refer to Fig 3
    • Checking for wear. Refer to Fig 5
    • Replace if there are grooves or scoring
  16. Intermediate Ring for 1st Gear
    • Installation position. Refer to Figure
    • Differentiating the spring pins; refer to Fig 3
    • Checking for wear. Refer to Fig 6
  17. Synchronizer Ring for 1st Gear
    • Installation position. Refer to Figure
    • Differentiating the spring pins; refer to Fig 3
    • Identification. Refer to Fig 4.
    • Checking for wear. Refer to Fig 6
    • Replace if there are grooves or scoring
  18. Needle Bearing
    • For 1st gear
  19. Inner Race/Needle Bearing
    • For the 1st gear selector gear
    • Removing. Refer to WHEEL SET, DISASSEMBLING AND ASSEMBLING  - "2nd gear wheel -E- along with the inner race/needle bearing for 1st gear -C- and the synchronizer hub/locking collar -D-  " (See Figure).
    • Installing. Refer to Figure
  20. Locking Collar/Synchronizer Hub For 1st And 2nd Gears
    • Assembling locking collar/synchronizer hub; refer to Fig 7
    • Removing. Refer to WHEEL SET, DISASSEMBLING AND ASSEMBLING  - "2nd gear wheel -E- along with the inner race/needle bearing for 1st gear -C- and the synchronizer hub/locking collar -D-  " (See Figure).
    • Installing. Refer to Figure
  21. 2nd Gear Synchronizer Ring
    • Installation position. Refer to Figure
    • Differentiating the spring pins; refer to Fig 3
    • Identification. Refer to Fig 4.
    • Checking for wear. Refer to Fig 6
    • Replace if there are grooves or scoring
  22. 2nd Gear Intermediate Ring
    • Installation position. Refer to Figure
    • Differentiating the spring pins; refer to Fig 3
    • Checking for wear. Refer to Fig 6
  23. 2nd Gear Inner Race
    • Installation position. Refer to Figure
    • Differentiating the spring pins; refer to Fig 3
    • Checking for wear. Refer to Fig 5
    • Replace if there are grooves or scoring
  24. 2nd Gear Wheel
  25. Needle Bearing
    • For 2nd gear
  26. Inner Race/Needle Bearing
    • For 2nd gear wheel
    • Removing. Refer to Figure
    • Installing. Refer to Figure
  27. Thrust Washer
    • For 2nd gear wheel
  28. Bearing Bracket
    • Supports input shaft and input shaft in transmission cover
    • Refer to -item  3- Bearing Bracket (See Figure).
  29. Roller Bearing
    • For the output shaft
    • Removing. Refer to Figure
    • Installing. Refer to Figure
  30. Output Shaft
    • with splines for 5th and 6th gears
  31. Needle Bearing or Bearing Bushing
    • For the rear flange shaft bearing in the output shaft
    • Removing. Refer to Figure
    • Installing. Refer to Figure
  32. 3rd Gear Wheel
    • Removing. Refer to Figure
    • Installation position: the higher inside collar faces 4th gear
    • Installing. Refer to Figure
  33. 4th Gear Wheel
    • Removing. Refer to Figure
    • Installation position: the higher inside collar faces 3rd gear
    • Installing. Refer to Figure
  34. Circlip
  35. Transmission Cover
  36. Output Wheel/Drive Wheel
Fig 2: Assembling Locking Collar And Reverse Gear Selector Gear
GWWA35-10071Courtesy of AUDI OF AMERICA, LLC
  1. Reverse Gear Wheel
  2. Locking collar
  3. Thrust piece

-- Slide locking collar over reverse gear selector gear.

Installed position:

-- Next, place the thrust pieces -3- in reverse gear selector gear notches and press the thrust pieces into the locking collar notches -arrow D-.

Fig 3: Differentiation Of Reverse Gear Synchronization Rings And 1st/2nd Gear
GWWA35-10079Courtesy of AUDI OF AMERICA, LLC
  1. Reverse gear synchronizer ring: The tabs -arrow 1- have a smooth surface.
  2. Reverse gear intermediate ring: The friction surface -arrows 2- are coated with sintered lining (brass colored).
  3. Reverse gear inner race: Does not have inner friction surface -arrow 3-.
  4. Synchronizer ring for 1st and 2nd gear: The tabs each have two ridges -arrow 4-. Identification for the 1st and 2nd gear synchronizer ring; refer to Fig 4.
  5. Intermediate ring for 1st and 2nd gear: The friction surfaces -arrows 5- are coated with carbon (black).
  6. Inner race for 1st and 2nd gear: The inner friction surface -arrow 6- is coated with carbon (black).
Fig 4: Identification For 1st And 2nd Gear Synchronizer Ring
GWWA35-10205Courtesy of AUDI OF AMERICA, LLC
  1. 1st gear synchronizer ring: The "19100" -arrow 1- label means that the clutch spline has an angle (∠) of 19°.
  2. 2nd gear synchronizer ring: The "17101" -arrow 1- label means that the clutch spline has an angle (∠) of 17°. Also, in each case, 3 x 3 gear teeth are missing on this synchronizer ring -arrows 3-.
NOTE:

The reverse gear synchronizer ring is smaller on the inside diameter and bears the identifying label of "15100".

Fig 5: Checking Inner Race Of 1st Gear For Wear
GWWA35-0095Courtesy of AUDI OF AMERICA, LLC

-- Check the outer friction surface -arrow- for scoring or signs of wear, replace if necessary.

-- Press inner race onto gear wheel taper and measure gap dimension -a- using a Feeler Gauge.

Gap Dimension -a- Wear Limit
1st and 2nd gear - inner race 0.6 mm
Fig 6: Checking Synchronizer Ring For Wear
GWWA35-0087Courtesy of AUDI OF AMERICA, LLC

-- Check synchronizer ring on inner friction surface arrow for scoring or signs of wear, replace if necessary.

-- Place inner race, intermediate ring and synchronizer ring on selector gear taper and >>turn<<.

NOTE:

>>Turn<< means: turn the synchronizer rings just about one turn while pressing on the rings at the same time.

-- Then measure the gap dimension -a- with a Feeler Gauge.

Gap Dimension -a- Wear Limit
1st, 2nd and reverse gears 0.7 mm
NOTE:

Replace inner race, intermediate ring and synchronizer ring for the respective gear together.

Fig 7: Assembly of Locking Collar/Synchronizer Hub for 1st and 2nd Gears
GWWA35-10206Courtesy of AUDI OF AMERICA, LLC

-- Mount the locking collar -1- over the synchronizer hub -2- so that the wire tooth spacing on the locking collar -arrow A- and on the synchronizer hub -arrow B- align with each other.

-- Then place thrust pieces -3- in synchronizer hub and press thrust pieces into notches -arrow E- in the locking collar.