SEAT Workshop Service and Repair Manuals

Pressing sealing flange with sender wheel onto crankshaft   Note t  The sealing flange with a PTFE sealing ring is equipped with a sealing lip support ring. This support ring serves the function of a fitting sleeve and may not be removed prior to installation. t  Sealing flange and sender wheel must not be separated or moved after removal from packaging. t  The sender wheel is held in its installation position by a fixture on the assembly tool -T10017- locating pin. t  Sealing flange and seal are one unit and must be replaced together with the sender wheel only. t  The tool -T10017- maintains its installation position to the crankshaft via a guide pin which is inserted into a threaded hole in the crankshaft.

A -  Hexagon nut B -  Clamping surface C -  Tool bell housing D -  Allen bolt E -  Guide pin F -  Locating pin A- Fitting sealing flange with sender wheel on assembly tool -T10017-

–  Screw hexagon nut -A- until it reaches the clamping surface -B- on the threaded spindle.

–  Clamp assembly tool -T10017- in a vice on clamping surface -B- on threaded spindle. –  Press assembly bell housing -C- downwards so that it lies on the hexagon nut -A--arrow-.   Note Inner part of assembly tool and assembly bell housing must be at same height (level).

–  Remove securing clip -A- from new sealing flange.   Note The sender wheel must not be taken out of the sealing flange or should its position in respect to this be changed.

The securing hole -B- on the sender wheel -C- must align with the marking -A- on the sealing flange. –  Place the sealing flange (with the forward side downwards) on a clean flat surface.

–  Push the sender wheel (sealing lip support ring joined to PTFE sealing ring) -A- downwards in direction of arrow until it lies on the flat surface.

The upper edge of the sender wheel and the forward edge of the sealing flange must align -arrows-.

–  Place the sealing flange, with the forward side on the assembly tool -T10017-, so that the locating pin -A- can be inserted in the sender wheel hole -B-.   Note Ensure the sealing flange lies flat on the assembly tool.

–  Push the sender wheel -B- (Sealing lip support ring joined to PTFE sealing ring) onto the surface of the assembly tool whilst tightening the three knurled screws -A-, so that the locating pin cannot slide out of sender wheel hole.   Note Ensure the sender wheel remains fixed on the assembly tool when installing the sealing flange. B -Positioning tool -T10017- with sealing flange on crankshaft flange Prerequisites l  Crankshaft flange must be free of oil and grease. l  Engine positioned at TDC cylinder 1. Work sequence

–  Unscrew hexagon nut -A- to end of threaded spindle. –  Press assembly tool threaded spindle in direction of arrow, until the hexagon nut -A- lies against the assembly bell housing -C-. –  Align flat side of assembly bell housing towards oil sump side of sealing surface.

–  Secure assembly tool to crankshaft flange with Allen bolts -A-.   Note Secure the Allen bolts -A- approx. 5 turns of thread on the crankshaft flange

–  Screw two M6×35 mm bolts -A- into cylinder block to guide sealing flange. C-Fitting assembly tool -T10017- onto crankshaft flange

–  Slide assembly bell housing -A- in direction of arrow by hand until the sender wheel (Sealing lip support ring for PTFE sealing ring)  B-lies against the crankshaft flange -C-.   Note The assembly tool guide pin -D- is guided into threaded hole in crankshaft during the fitting sequence. This ensures the sender wheel reaches its final installation position. –  Hold assembly bell housing in this position and screw both assembly tool Allen bolts hand tight. –  Screw hexagon nut -E- onto threaded spindle by hand until it lies against the assembly bell housing -A-. D- Pressing sender wheel onto crankshaft flange with assembly tool -T10017-

–  Tighten hexagonal nut of assembly appliance with torque spanner -SAT 8010- and ring spanner -SAT 8010/24C-..    Tightening torque: 35 Nm   Note A small air gap must be present between cylinder block and sealing flange after tightening hexagon nut to 35 Nm. E - Checking sender wheel installation position on crankshaft

–  Unscrew hexagon nut -A- to end of threaded spindle. –  Remove the M6×35 mm hexagon bolts -B- from cylinder block. –  Screw the three knurled screws -C- out of sealing flange. –  Completely detach the assembly tool -T10017- and remove the sealing lip support ring

The assembly position of the sender wheel on the crankshaft is exact if a distance -a- of 0.5 mm exists between crankshaft flange -A- and sender wheel -B-.   Note To enable the dimension -a- to be shown more clearly, the crankshaft flange is illustrated without the fitted assembly tool -T10017-.

–  Place a Vernier calliper against the crankshaft flange -A- (marked area)..

–  Measure the distance -a between Vernier calliper and sender wheel with a feeler gauge -A-. If measurement -a- is too small: –  Re-press sender wheel → . When dimension -a- is achieved: –  Remove assembly tool. –  Tighten the new securing bolts for the sealing flange using alternate and diagonal sequence.    Tightening torque: 10 Nm

–  Fit engine speed sender -arrow-.    Tightening torque: 5 Nm –  Fit the oil sump → Chapter. –  Install intermediate plate. –  Fit fly wheel with new bolts. F- Rectify sender wheel position

–  Slide assembly bell housing -A- to sealing flange -B- by hand. –  Screw two M6×35 mm bolts -C- into cylinder block to guide sealing flange -B-. –  Screw hexagon nut -D- along threaded spindle, by hand, until it contacts the assembly bell housing -A-.

–  Tighten hexagonal nut of assembly appliance with torque spanner -SAT 8010- and ring spanner -SAT 8010/24C-.    Tightening torque: 40 Nm –  Check installation position of sender wheel on crankshaft again → . If dimension -a- is too small again: –  Tighten hexagon nut of assembly tool to 45 Nm. –  Check installation position of sender wheel on crankshaft again → .