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Escape of ATF in area of gearbox housing, input shaft > < Renewing oil seal for selector shaft

A4 Mk2

Removing and installing ATF breather pipe
Removing and installing ATF breather pipe
ATF escaping at the underside of the bell housing may be an indication of leakage at the input shaft oil seal and/or the ATF breather pipe. The actual cause of the leak must be determined before renewing any components.
t  The input shaft oil seal must be renewed if leaking → Chapter.
t  The ATF breather pipe must be renewed if leaking.
Removing
  Note
t  Observe the general repair instructions → Chapter.
t  Rules for cleanliness when working on the automatic gearbox → Chapter.
l  Gearbox removed
Depending on the version, different ATF breather pipes can be fitted.
   
Version 1
–  Unscrew bolt -B-.
–  Pull ATF breather pipe -A- out of opening in gearbox.
Installing
Installation is carried out in reverse sequence; note the following:
–  Push in new ATF breather pipe -A- as far as stop.
–  Secure ATF breather pipe to gearbox housing with retainer and bolt -B-.
Tightening torque
  A37-0425
ComponentNm
ATF breather pipe to gearbox housing25

   
Version 2
  Note
This version has been installed or retrofitted in certain countries.
–  Remove bolt -1-.
–  Pull retaining clips -2- and -3- off gearbox.
–  Pull ATF breather pipe -A- and breather pipe -B- out of opening in gearbox.
Installing
Installation is carried out in reverse sequence; note the following:
–  Push in new ATF breather pipe -A- as far as stop.
l  The breather pipe -B- must be pushed onto the ATF breather pipe -A- as far as it will go.
–  Secure ATF breather pipe to gearbox housing with retainer and bolt -1-.
–  Push retaining clips -2- and -3- all the way onto ribs on gearbox housing cover.
–  Press breather pipe -B- inwards by hand in area between bolt -1- and retaining clip -2- to relieve tension on retaining clip -2-.
Tightening torque
  A37-10847
ComponentNm
ATF breather pipe to gearbox housing25

   
Version 3
–  Pull retaining clips -1 to 3- off gearbox.
–  Pull ATF breather pipe -A- out of opening in gearbox.
Installing
Installation is carried out in reverse sequence; note the following:
l  The breather piece -B- must be inserted as far as it will go.
–  Push in new ATF breather pipe -A- and breather piece -B- as far as stop.
–  Push retaining clips -1 to 3- all the way onto ribs on gearbox housing cover.
–  Press breather pipe -A- inwards by hand in area between retaining clips to relieve tension on retaining clips.
  A37-10846

Escape of ATF in area of gearbox housing, input shaft > < Renewing oil seal for selector shaft