Front oil seal
1. Remove the timing belt and crankshaft sprocket as described in paragraph 5.
2. The stuffing box can be replaced without removing it from the housing. Drill two small opposite holes in the oil seal to be replaced. Wrap a self-tapping screw in them, pulling them with pliers, remove the gland. Be careful not to drill through the stuffing box or shaft seal.
3. Clean the seat in the stuffing box by wiping it with a rag, leaving no lint - do not use solvents that can get into the crankcase and damage the lubrication system seals. Remove any burrs to prevent premature damage to the seal.
4. Lubricate the oil seal with clean engine oil and install it in the housing.
5. Press the oil seal flush into the housing with the sealing edges inside the motor using a mandrel or piece of wood and a hammer.
Note: Choose a head that rests only on the hard outer edges of the stuffing box.
6. Install the crankshaft sprocket as shown in paragraph 5.
Replacing the front oil seal housing gasket
7. Remove the crankshaft sprocket as described in paragraph 5.
8. Turn away a jet bracket of a support in front of the engine.
9. Remove the pallet - paragraph 15.
10. Gradually loosening, unscrew the bolts securing the stuffing box housing.
11. Remove the case from the block of cylinders together with an epiploon, turning it to remove from a shaft.
12. Remove the old body gasket, Clean the mating surfaces of the block and body.
13. If necessary, remove the old oil seal by prying it with a screwdriver (pic. 10.13).
14. Clean the stuffing box and check for cracks or distortion. Lay the chassis on the table with the mating surface down. If removed, evenly press a new oil seal into the housing.
15. Lubricate mating surfaces with multi-purpose grease and install new gasket in place (pic. 10.15).
16. Wrap the edge of the end of the crankshaft with tape so as not to damage the new oil seal during installation.
17. Lubricate the inner edges of the oil seal with clean engine oil and put it together with the housing on the crankshaft. Twisting, slide the housing along the shaft until docking with the block (pic. 10.17).
18. Screw in the fastening bolts and gradually tighten them to the prescribed torque.
19. Install the drip tray as described in paragraph 15.
20. Install the engine mount jet bracket and tighten its mounting bolts.
21. Install the crankshaft sprocket as described in paragraph 5.
Crankshaft rear oil seal housing
Note: The seal is integral with the housing and must be replaced together.
22. Remove the gearbox - see chapters 7A or 7B.
23. Remove the flywheel (manual transmission) or faceplate (automatic transmission), as described in paragraph 13 of this chapter.
24. Remove the intermediate plate from the cylinder block bushings.
25. Remove the pan - see paragraph 15.
26. Gradually loosening, unscrew the bolts securing the stuffing box housing.
27. Remove the stuffing box housing from the block with the stuffing box by twisting it until the stuffing box comes off the shaft.
28. Remove the old gasket from the cylinder block, wipe the block clean before installing the new oil seal and housing.
29. Lubricate the mating surface of the block with multi-purpose grease and install a new gasket in place (pic. 10.29).
30. The original Audi / VAG oil seal is supplied with a plastic protective cap that must be put on the heel of the crankshaft. The cap prevents premature damage to the seal lips during installation (pic. 10.30). If there is no cap, wrap the shaft with tape.
31. Lubricate the working edges of the oil seal with clean engine oil, install the housing together with the oil seal on the shaft, turning it until the housing stops against the block (pic. 10.31).
32. Screw in the fastening bolts and tighten them gradually to the prescribed torque (pic. 10.32).
33. Install the drip tray as described in paragraph 15.
34. Establish an intermediate plate on the block of cylinders, wrap bolts of fastening and tighten them.
35. Install flywheel (manual transmission) or faceplate (automatic transmission), as described in paragraph 13 of this chapter.
36. Install the gearbox as described in chapter 7A or 7B.
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