SEAT Workshop Service and Repair Manuals

Adjusting 2nd and 4th gear brake -B2-

Special tools and workshop equipment required

t	Support plate -VW 309-

t	Support clamp -VW 313-

t	Gearbox support -VW 353-

t	Adjusting device -3459-

t	Depth gauge

t	Straight edge

These adjusting instructions only apply to gearboxes in which a shim and a retaining ring are installed in brake -B2- → Item and → Item.

In these gearboxes, the play of brake -B2- is determined by the thickness of the shim.

In some gearboxes, a corrugated washer is installed on the last outer disc instead of the retaining ring.

The play of brake -B2- is determined by the thickness of the last outer disc.

Adjusting instructions for such gearboxes → Chapter.

–	Install components for adjusting without shim → Item, without last outer disc → Item and without spring caps → Item.

1 -	Gearbox housing

2 -

Circlip

q	For supporting tube.

3 -	Supporting tube -B2-

q	Replacement parts are allocated according to gearbox code letters → Electronic parts catalogue “ETKA”.

q	Inserting so that notch locates on freewheel wedge.

4 -	Outer disc -B2-

q	3 mm thick.

5 -	Spring cap

q	Installing after installing first outer disc → Item.

6 -	Spring cap

q	Do not install when adjusting -B2-.

q	Installing before installing last outer disc.

7 -

Spring

q	Replacement parts are allocated according to gearbox code letters → Electronic parts catalogue “ETKA”.

8 -	Inner disc -B2-

q	Quantity → Chapter.

q	Replacement parts are allocated according to gearbox code letters → Electronic parts catalogue “ETKA”.

9 -	Outer disc -B2-

q	Always installing 2 mm thick outer discs.

q	Quantity → Chapter.

10 -	Outer disc -B2-

q	3 mm thick.

q	Do not install when adjusting -B2-.

11 -

Shim

q	Do not install when adjusting -B2-.

12 -	Retaining ring

q	Inserted with smooth side facing last inner disc → Item when adjusting -B2-.

Determining shim(s) The thickness of the shim(s) is determined by gap x. Comply with following formula

Gap x = a - b - 2.65 mm The measuring points are shown in the illustration to help understanding the formula. Adjusting device -3459-, which exerts a force -F- onto the disc pack via the retaining ring, is not illustrated. Calculating dimension -a- → Anchor. Calculating dimension -b- → Anchor. 2.65 mm - The amount for settling is taken into account by force F. 1 -  ATF pump 2 -  Retaining ring 3 -  Install -B2- discs without last outer disc 4 -  Supporting tube First outer disc -arrow- and last outer disc (do not install to measure!) are always 3 mm thick. Calculating dimension a: Assemble planetary gearbox up to the last -B2- inner disc → Chapter. The last outer disc and shim are not installed!

–  Place retaining ring with smooth side onto last inner disc. –  Place -3459- onto retaining ring and turn so that the three clips align with the 3 holes for the ATF pump. –  Bolt -3459- to flange for ATF pump with 5 Nm. The disc pack for -B2- is now pressed together for the measurement.

–  Measure from pump flange/gearbox housing -arrow- to-3459- with depth gauge. Dimension a = Height of -3459- in mm - measured value Example:

Height of -3459-	=	60.0 mm
- Measured value	=	- 32.3 mm
Calculated value a	=	27.3 mm

–  Note calculated value a. –  Remove -3459-. –  Remove retaining ring. Calculating dimension b: –  Push piston into ATF pump onto stop. –  Place new paper gasket onto ATF pump.

–  Place straight edge “B” onto stator support -arrows- and measure with depth gauge “A” to gasket of pump flange. Example:

Measured value	=	39.8 mm
- Straight edge	=	- 19.5 mm
Calculated value b	=	20.3 mm

–  Note calculated value b. Gap x = a - b - 2.65 mm Gap x = 27.3 - 20.3 - 2.65 mm = 4.35 mm –  Determine thickness of shim(s) according to table: Table of shims

Gap “x” (mm)	Shims (mm)
3.25 … 3.50 3.51 … 3.75 3.76 … 4.00	1.0 1.25 1.50
4.01 … 4.25 4.26 … 4.50 4.51 … 4.75	1.75 1.00 + 1.00 1.00 + 1.25
4.76 … 5.00 5.01 … 5.25 5.26 … 5.50	1.25 + 1.25 1.25 + 1.50 1.50 + 1.50
5.51 …5.75 5.76 …6.00	1.50 + 1.75 1.75 + 1.75

–  Ascertain thickness of shim(s) according to table and determine part no. from parts catalogue. In this example two shims must be installed (each 1.00 mm thick). –  Place three spring caps onto compression springs. –  Insert last outer disc, 3 mm thick.

–  Install correct shim(s) -a-. –  Place retaining ring -b- onto shim(s). Smooth side facing shim. –  For further assembly instructions, see → Anchor.