Engine, Assembly Overview

Engine, Assembly Overview





CAUTION!
Be careful; aluminum cylinder block! The crankshaft as well as the pistons must not be removed. Even just by loosening the crankshaft bearing cap bolts, the bearing seats of the cylinder block are already deformed. These deformations reduce the bearing clearance. Even if the bearing shells are not replaced, bearing damage could occur due to the changed bearing clearance. If the bearing cap bolts are loosened, the complete cylinder block with crankshaft and pistons must be replaced. It is not possible to measure crankshaft bearing clearance using workshop equipment.

• Engine is to be secured to Engine and Transmission Holder (VAS 6095) for performing assembly work.

• Engine must not be set down on oil pan, because the fluid seal between lower and upper oil pan is otherwise damaged.

• If large quantities of metal particles or abraded material are detected during engine repairs, it may be an indication for a damaged crankshaft or rod bearings. To prevent further damage, perform the following steps after the repair:

• Thoroughly clean oil passages

• Replace oil return valve,

• Replace oil spray jets

• Replace oil cooler

• Replace oil filter.