Loosen the oil pan bolts 0.5 turn. Remove bolts (6 pcs.) fixing the cover of the rear oil seal of the crankshaft. Carefully detach the oil pan seal from the rear oil seal cover and remove the cover.
After removing the rear oil seal cover, check the oil pan gasket for damage. If necessary, remove the oil pan and replace its seal.
Attention! Rear oil seal cover supplied complete with oil seal Starting from 04.1990, the oil seal that is supplied is used and stored only on a special support sleeve. If the stuffing box has been stored without a support sleeve for more than six months, then do not install such an stuffing box. The new stuffing box does not have a spiral wound expander.
The working edge of the stuffing box is very sensitive, and in no case should it be bent and touched with your hands.
If necessary, remove the oil seal and press in a new one, use the tool «11.1.260» in combination with fixture «00.5.500».
Tool 11.1.260
Attachment 00.5.500
Check the correct position of the centering sleeves (1, fig. 3.85) and replace the seal (2)
For corner joints (arrows) plane of the parting with the oil pan evenly apply a thin layer of type sealant «Drei Bond-1209»».
When installing the oil seal cover on the crankshaft, use the support sleeve supplied with the oil seal as a mounting tool. Lubricate the seating surface of the crankshaft with engine oil before installation. Install the cover with the stuffing box on the crankshaft, avoiding distortions.
Replace M8 bolts (1, fig. 3.86) and cover their threads with sealant.
Replace the sealing washers under the mounting bolts (M6).
Insert and tighten all bolts securing the stuffing box cover with a preliminary torque of 8.0-10 Nm (0.8—1.0 kgf·m), then bolts (M6, 4 pcs.) torque 11-14 Nm (1.1—1.4 kgf·m), and the bolts (M8, 2 pcs.) torque 24—30 Nm (2,4—3,0) kgf·m