Removal
Remove the belt pulley.
Carefully remove the oil seal from the engine crankcase using the "arrow" pry bar.
Installation
Lubricate the new seal and install it using the VAG 3088 tool (on the car Syncro device VAG 3162) and slightly tighten the belt pulley bolt without the spacer washer. Then install and tighten the belt pulley bolt with the spacer washer. If there is no special device, carefully drive the seal with a pipe of the appropriate diameter and lightly hit it with a hammer until it stops.
Press together the distributor drive gear, intermediate ring and crankshaft toothed pulley in a press and remove the keys.
Remove bearing 3.
Clean the crankshaft and blow out the lubrication channels with compressed air. Then immediately lubricate all bearing journals with engine oil to prevent corrosion.
Check for cracks in the crankshaft. To do this, check the shaft for sound by hanging the crankshaft vertically on a wire and lightly hitting it with a hammer. This should produce clear metallic sounds.
Check the crankshaft for signs of wear. Light marks on the journals can be carefully removed without damaging the interference fit. If necessary, grind or replace the crankshaft.
Inspect the holes of the ignition distributor drive gear and the camshaft toothed pulley for scoring and check the appearance of the working surface of the teeth.
Check the reliability of the pins.
Assembly
Wash the crankshaft with gasoline and blow out the lubrication channels with compressed air.
Lubricate with engine oil and install bearing 3.
Insert the keys of both drive gears.
Heat both gears to approximately +80°C in an oil bath. Put the heated camshaft gear on with the chamfer facing bearing 3.
To fit the crankshaft gear and the distributor drive gear, a bushing and a guide wedge are required. The guide wedge is needed to ensure that the groove in the drive gear is in the correct position for the cap.
Put on the intermediate ring.
Install the heated distributor drive gear also using the bushing and guide wedge. After cooling, check the reliability of the fit.
Put on the retaining ring. To do this, a tapered sleeve is placed on the bearing neck so as not to damage the surface of the neck.
Lubricate with engine oil and install bearing 4. The ring and groove in the bearing should face the oil deflector ring.
Put on the oil deflector ring with the hollow side facing out. Insert the key of the belt pulley.
Install the connecting rods.
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