Crankshaft seals (VW Sharan 1)

The front and rear 4 (Fig. 85) crankshaft oil seals should be replaced after each removal of the crankshaft or oil seal flanges. Oil seals are usually replaced using a special tool, taking the necessary precautions. If oil leaks are detected at the oil seal locations, they are replaced. Oil seals can be replaced on an installed engine.

Removal

Removal of the front crankshaft oil seal is carried out in the following order:

• lock the crankshaft in a stationary position with a locking device and engage the gear;
• unscrew the vibration damper mounting bolt, which is tightened to a torque of 450 N·m. At the service station "Volkswagen" a clamp is usually used for this purpose;
• to remove the front oil seal:

• unscrew the inner part A (Fig. 86) of the puller 3203 approximately three turns (about 4 mm) from the outer part and fix the puller in this position with the set screw B;
• lubricate the threaded head of the tool and push it as far as possible onto the seal;
• loosen the set screw B and screw in the inner part of the tool with uniform pressure until the seal is pressed out;
• clamp the puller in a vice and remove the seal from it with pliers.

Remove the rear crankshaft oil seal in the following order:

• remove the gearbox, clutch and flywheel;

• install the lever (Fig. 87) of puller 2086 on the crankshaft flange and use it to remove the rear oil seal;
• if there is no puller 2086, then the rear oil seal can be removed using a screwdriver, while you need to ensure that the oil seal cover is not damaged;
• if the engine is removed, unscrew the rear oil seal cover and remove it together with the oil seal. Then knock the oil seal out of the cover from the inside.

Installing the oil seal on a removed engine

When installing the oil seal on a removed engine, do the following:

• lubricate the working surface and the outer side of the seal with engine oil and carefully press it into the cover so that the outer surface of the seal goes completely inside. When working with a hammer, be careful not to deform the seal;
• carefully place the oil seal cover with the gasket on the crankshaft and secure it to the cylinder block with bolts. Tighten the bolts evenly in a circle.

Installing the oil seal on the engine

When installing the front oil seal on the engine, do the following:

• place the guide sleeve 3266/1 (Fig. 88) of the special device on the crankshaft journal, lubricate the inner and outer sides of the seal with engine oil and place it on the guide sleeve;

• place another bushing 3266 of the same tool on the guide sleeve 3266/1 (Fig. 89) and tighten the crankshaft vibration damper bolt located in the center until the oil seal is seated in its place;
• after installing the front oil seal, remove all parts of the tool.

When installing the rear oil seal on the engine, do the following:

• use a hammer to tap the seal onto the cover. Be careful not to damage the seal's lip;

• using device 2003/1 (Fig. 90) or a metal circle with a hole in the center for the edge of the crankshaft, secured with bolts in the threaded holes of the clutch pressure plate, tighten both bolts evenly and press in the oil seal.

After installing the front or rear oil seal on the engine, all further assembly work is carried out in the reverse order of disassembly, depending on which oil seal was replaced.