Overhaul

Engine, disassembling and assembling





CAUTION: Be careful; cylinder block is aluminum! 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.

Note:
^ Secure engine in engine and transmission stand VAS 6095 when working on engine.
^ The engine must not be set down on the oil pan otherwise the liquid seal between the upper and lower oil pan will be damaged.
^ If large quantities of metal particles or metal shavings 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 non-return valve,
^ Replace oil spray jets
^ Replace oil cooler
^ Replace oil filter