When removing the intermediate shaft oil seal, you can follow the same instructions as when removing the front crankshaft oil seal.
Withdrawal
In order to replace the oil seal from the front side, it is necessary to remove the front of the car. to gain access to both glands.
Loosen all V-ribbed belts and V-belts, remove them.
Remove drive belt (toothed belt).
Loosen the crankshaft drive gear bolts and remove them. To loosen the drive gear bolts, engage fifth gear, apply the parking brake, and loosen the bolt with a socket. It should be borne in mind that the bolt head has 12 faces instead of six faces (key size 19 mm).
Attention. If the engine is removed, the crankshaft will be difficult to hold. In the workshop, a special device is used for this, which is installed on the crankshaft to keep it from turning (for scrolling, holes for the bolts of the pulley are used).
Front crankshaft oil seal
Pull gear off crankshaft. To do this, you can use two mounts.
To remove the front oil seal, tool #2085 is usually used. In addition, the crankshaft drive gear bolt must be screwed back into the crankshaft. After that, install the puller (1) and pull out the seal.
Since a special tool may not be available, you can screw in two self-tapping screws from the outside of the gland and remove the gland using a powerful screwdriver and pliers.
Intermediate shaft oil seal
To remove this stuffing box, you need to completely unscrew the stuffing box flange. After that, you need to knock out the gland from the flange.
Rear crankshaft oil seal
Attention. Normally, the rear oil seal is removed with the oil seal flange. The instructions below only apply if a flange with a gland already installed in it is not available.
To remove the oil seal, you need to remove the gearbox, clutch and flywheel (or drive plate if equipped with an automatic transmission). To remove the rear oil seal, you need to use the tool shown in the figure or try to carefully remove the oil seal with a screwdriver. When doing this, try not to damage the engine crankcase.
If the engine is removed, you need to unscrew the gland flange and remove it together with the gland. The gland should then be knocked out of the flange from the inside out. If you can purchase a flange with an oil seal already installed, this job will be simplified.
Installing an oil seal on a removed engine
Lubricate the outer circumference of the seal. The edge should not be lubricated. Carefully drive the gland flush into the flange. If there is a flange with a gland already installed, these instructions are of course not valid.
Attach the flange with the oil seal inserted into it to the crankshaft and cylinder block, center it well. Tighten the bolts evenly around the circumference. The following tightening torques must be observed:
- M6 and M3 bolts are used for the front sealing flange. M6 bolts should be tightened to 10 Nm, M8 bolts to 25 Nm.
- Tighten bolts for intermediate shaft sealing flange to 25 Nm.
- Tighten the crankshaft rear seal flange bolts to 10 Nm.
Installing an oil seal on an installed engine
Front crankshaft oil seal
A special tool is used to install the front oil seal. It is installed as shown in the figure and is screwed on with an old crankshaft drive gear bolt. In this case, the gland is installed in the correct position. It is necessary to lubricate the outer side of the gland - do not apply grease to the working edge.
Without the specified device, you can use a piece of pipe of the appropriate diameter. On the outside, you can put a large washer or a metal plate with a hole in the center and use the old bolt to install the oil seal on the shaft and into the crankcase.
Remove the mounting sleeve or tool used for mounting.
Slide the drive gear onto the crankshaft.
Install a secure locking device.
Lubricate the threads of the new 12-point bolt with AMV sealant 188 001 02 (type "Loctite") and screw it into the crankshaft. While holding the crankshaft in a suitable way, tighten the bolt to 90 Nm. After that, remove the torque wrench and tighten the bolt another half turn (90°).
Intermediate shaft oil seal
The gland can be installed in two different ways. You can drive it into the flange or press it by screwing the tool shown in the figure into the flange and onto the intermediate shaft. The device consists of a piece of pipe, a large washer, a long bolt (headless) and nuts.
Lubricate the outside of the seal, but do not apply grease to the sealing lip.
Slide the flange with the oil seal onto the intermediate shaft as follows. so as not to damage the working edge, and carefully hammer the flange with a hammer.
Screw in both screws and tighten them alternately to 25 Nm.
Screw on the intermediate shaft gear.
When installing the stuffing box in a screwed flange, proceed as follows:
Lubricate the outer side of the stuffing box, but do not apply grease to the lip and put the stuffing box on the shaft, pressing it into the flange.
Install the tool shown in the picture above. The gland should be pushed in until it is behind the outer edge of the flange.
Rear crankshaft oil seal
When replacing the rear oil seal, it must be carefully hammered in to center it. In this case, it is necessary not to damage the working edge. Now you need to use tool 2003/3 or a round plate with a hole in the center for the end of the crankshaft. It is also necessary to screw the appropriate tool with two bolts to the threaded holes for the flywheel. Tightening both bolts evenly will push the seal into place. If the tool is not available, the gland can be carefully hammered in, but the possibility of damage should be borne in mind. In this case, neither the outer side of the stuffing box, nor its working edge should be lubricated.
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