volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Installing > < Modifying gearbox support3221
Dismantling
Dismantling
   
–  Secure on gearbox support -3221- or on gearbox support -3221A--arrows-.
–  Place drip tray -V.A.G 1306- underneath.
–  Drain gear oil.
  A34-0293
–  Remove clutch release lever -A- together with release bearing and guide sleeve -arrows-.
–  Remove right flange shaft securing bolt -B-. Screw 2 bolts into flange and counterhold flange shaft using a lever.
–  Remove flange shaft along with spring, thrust washer and tapered ring.
  A34-0294
–  Unbolt gearbox housing cover -arrow- and carefully pull it off.
  N34-10164
–  Pull out pivot pin -1- for 5th and 6th gear selector fork -2- and remove selector fork.
  N34-10166
–  Remove bolts -A- for inner bearing races on input and output shafts, engaging 5th gear -arrow 1- and 1st gear -arrows 2- and -3-.
–  Input shaft and output shaft are locked when both gears are engaged. Both bolts can now be loosened.
  Note
t  If the shafts are to be reused, clean residual locking material out of threaded holes using a thread chaser.
t  Pull off gear wheel for 6th gear with three arm puller -Kukko 30/1-.
t  If necessary, gear wheel for 6th gear can be pulled off to stop on spindle with two arm puller -Kukko 204/2-. Then pull off further with three arm puller -Kukko 30/1-.
  N34-1513
–  Pull off gear wheel for 6th gear with inner race of cylindrical roller bearing for output shaft.
A - Three arm puller -Kukko 30/1-
B - Hexagon socket head bolt -M8 x 15-
  N34-11536
–  Tighten splitter -Kukko 17/1--A- behind constant mesh teeth of synchromeshed gear for 6th gear (not dog teeth) -arrow-.
A - Splitter, 12 … 75 mm, e.g. -Kukko 17/1-
B - Hexagon socket head bolt -M8 x 15-
C - Puller -Kukko 18/1-
–  Pull off gear wheel for 6th gear with inner race of cylindrical roller bearing for input shaft and thrust washer.
–  Remove locking collar for 5th and 6th gears with locking pieces.
  N34-10168
–  Tighten splitter -Kukko 17/1--A- below synchro-ring for 5th gear -1-. This presses synchro-ring against synchro-hub -2-.
A - Splitter, 12 … 75 mm, e.g. -Kukko 17/1-
B - Hexagon socket head bolt -M8 x 15-
C - Puller, e.g. -Kukko 18/1-
–  Pull off synchro-hub for 5th and 6th gears with inner race for 6th gear needle bearing and 5th gear synchro-ring.
  Note
The synchro-ring for 5th gear must always be renewed after it is pulled off.
–  Remove flange shaft securing bolt by screwing 2 bolts into flange and counterholding flange shaft with a lever.
  N34-10174
–  Pull out flange shaft -1- with spring.
–  Remove sleeve -2- and 5th gear synchromeshed gear with needle bearing -4-.
–  Unscrew hexagon flange nut -5- for securing reverse gear selector mechanism.
–  Remove bearing mounting securing bolts -6- from input and output shafts.
5th gear wheel can be removed by hand.
–  Remove gear wheel for 5th gear -3-.
5th gear wheel cannot be removed by hand.
–  The gear wheel for 5th gear -3- will be pressed off later when the bearing support for the deep groove ball bearing → Fig..
Continuation for all
–  Turn gearbox in support bracket so that clutch housing is upwards.
–  Remove securing bolts from clutch housing side for securing clutch housing to gearbox housing.
–  Remove clutch housing, if necessary carefully levering up all around along protruding housing flange and alternating between sides, being careful not to damage sealing surfaces.
–  Do not cant the clutch housing. This prevents damage to roller bearings and their bearing seats on the input and output shafts.
  N34-10173
–  Remove differential -A- from gearbox housing.
  N34-10172
–  Gearboxes for vehicles with start-stop system: remove gearbox neutral position sender -G701--arrow-.
  N34-11289
–  Remove selector shaft with selector cover -A-. Place selector shaft in neutral. Then remove bolts -arrows- and pull selector shaft out of gearbox housing.
–  Remove pivot pins -B- located on underside of gearbox.
–  Screw out reversing light switch -F4--C-.
  N34-10170
–  Remove bolt -A- for securing reverse gear wheel shaft.
–  Remove pivot pins -B- located on bottom of gearbox.
  Note
Do not remove cover plate -arrow- when dismantling gearbox.
5th gear wheel cannot be removed.
  A34-0300
–  Press out input shaft, output shaft with gear wheel for 5th gear -A-, bearing mounting, selector mechanism (selector forks) and reverse gear together.
  Note
t  Position gearbox housing so that dowel sleeves in the gearbox will not be damaged.
t  When pressing out, get help from second mechanic to ensure components do not fall out.
5th gear wheel can be removed.
  N34-10954
–  Press out input shaft, output shaft with bearing mounting, selector mechanism (selector forks) and reverse gear together.
  Note
t  Position gearbox housing so that dowel sleeves in the gearbox will not be damaged.
t  When pressing out, get help from second mechanic to ensure components do not fall out.
Continuation for all
–  Press input and output shafts, together with gear wheel for 5th gear, off deep groove ball bearing → Fig..
–  Press input and output shafts, without gear wheel for 5th gear, off bearing mounting with deep groove ball bearing → Fig..
  N34-1518

Installing > < Modifying gearbox support3221