Disconnect the gearbox from the engine, being careful not to damage the drive shaft.
Loosen the clutch mounting bolts evenly crosswise, first securing the flywheel from turning. The bolts can be loosened without securing the flywheel using a socket wrench with a handle, placing the wrench on the bolt head on the right side and hitting the end of the handle with your hand to loosen the bolt. To hold the flywheel from turning, you can also use a lever with two holes corresponding to the holes in diameter and the location of the clutch mount. Secure the engine and sequentially loosen the flywheel and crankshaft mounting bolts (see fig. 73). Before removing the clutch, use a center punch to mark the location of the flywheel and clutch housing. Loosen the pulley mounting bolt on the front end of the crankshaft.
Fig. 73. Marks on the flywheel and crankshaft.
Remove the cylinder head together with the intake and exhaust manifolds (section 3.3.1).
Remove the camshaft drive cover.
Remove the oil pan (section 4.2).
If necessary, remove only the crankshaft, the pistons and connecting rods can be left in the cylinder block. If necessary, remove the pistons and connecting rods as described in section 3.4.1. If the pistons and connecting rods remain in the cylinder block, the connecting rod caps and their bearings should be marked and stored as an assembly.
Attach a dial indicator to the front side of the block and install its tip on the front end of the crankshaft parallel to the axis. Use a screwdriver to press the crankshaft to one side of the main bearing shell support flange, set the indicator scale to "0" and move the shaft to the other side as far as it will go. The indicator readings correspond to the axial clearance of the crankshaft. If the clearance is more than 0.30 mm, use wider liners when installing the crankshaft. The measurements after installation are similar to those on an eight-cylinder engine.
Loosen the main bearing cap bolts evenly on both sides, check the markings on the main bearing caps. Cap No.1 is located next to the crankshaft pulley. The cap numbers are in the middle.
Remove the main bearing shells and place them in the bearing caps. Mark the shells on the outer surface (do not scratch or punch).
Carefully remove the crankshaft from the cylinder block.
Remove the liners from the cylinder block, mark them and store them together with the cap liners and main bearing caps. The cylinder block liners have holes and grooves for oil supply.