Diesel engine
Crankshaft oil seal
I – oil seal with spring; II – seal made of PTFE material; 1 – working edge; 2 – oil seal
Installing crankshaft oil seals
1 – front oil seal; 2 – front cover of the cylinder block; 3 – cylinder block; 4 – flywheel; 5 – flywheel mounting bolt; 6 – clutch housing shield; 7 – rear oil seal holder mounting bolt; 8 – rear oil seal holder with oil seal assembly
Please note that the engine is equipped with oil seals without compression springs, with a ribbed working edge 1. The working edges of these oil seals must not be lubricated before installation; the seat on the shaft must also be dry and clean.
1. Remove the right front fender liner.
2. Remove the camshaft drive belt (see subsection 2.4.1).
3. Loosen bolt 1 of the crankshaft pulley, while holding the crankshaft from turning. At service stations, the T 30004 or MP 1-310 devices are used for this purpose (2 – device; 3 – crankshaft pulley).
4. Remove crankshaft pulley 3.
5. Use the MP 1-226 sealing ring remover to remove the old seal.
6. Wipe the crankshaft with a clean cloth.
7. Place the new oil seal onto the crankshaft with the working edge facing into the cylinder block using a suitable mandrel, such as T 10053/1.
8. Press the oil seal in fully using mandrel 1. At service stations, mandrel T 10053 with bolt T 10053/2 is used for this (1 – mandrel T 10053; 2 – bolt T 10053/2).
If you cannot remove the old oil seal, you can remove the front cylinder block cover to replace it. To do this, remove the crankshaft pulley by following the instructions in paragraph. 1-4, then carry out the following work:
1. Remove the engine crankcase (see subsection 3.1).
2. Loosen the mounting bolts 7 and remove the front cover 2. The cover is installed with silicone sealant D176404 A2 without a gasket; it can be torn off the block by knocking it off with light blows of a rubber hammer.
3. Remove the front oil seal 1 from cover 2.
4. Thoroughly clean the seal seat in the cover and the mating surfaces of the cover and cylinder block from oil and any remaining old sealant.
5. Using a suitable mandrel, press the new seal into the cover until it stops.
6. Apply silicone sealant to the lid (the place where the sealant is applied is shown by the arrow). In this case, do not apply too thick a layer of sealant; the layer thickness should be 2–3 mm.
7. Place a guide mandrel on the crankshaft to avoid damaging the seal lip and reinstall the cover. Tighten the cover mounting bolts evenly in a crisscross pattern to a torque of 15 Nm.
8. Install all removed parts in reverse order. Please note that the sealant dries within 30 minutes, so you can pour oil into the engine crankcase no earlier than 30 minutes after installing the crankcase.
Petrol engines 1.0 l, 37 kW and 1.4 l, 50 kW
1. Remove the right front fender mudguard.
2. Remove the alternator drive belt (see subsection 2.3).
3. While holding the crankshaft from turning, unscrew bolt 18 (see figure Cylinder block of 1.0 l, 37 kW and 1.4 l, 50 kW engines) pulley fastenings.
4. Remove the generator drive pulley 17.
5. Remove seal 16 from cover 15 using a sealing ring puller or by prying it with a screwdriver. If the oil seal cannot be removed, you can remove the timing gear cover 15, but in this case you need to replace the cover gasket 20.
6. Press the new oil seal in until it stops, with the working edge facing inward.
7. Install all removed parts in reverse order.