Remove the fuel pump, ignition distributor, use key 67.7812.9514 to unscrew the spark plugs and coolant temperature gauge sensor.
Remove the alternator and coolant pump drive belt, remove the alternator and alternator bracket. Remove the coolant pump by disconnecting the heater coolant supply line from the pump and the outlet manifold. Remove the coolant outlet pipe and the coolant outlet line to the heater from the cylinder head.
Using tool A.60312, unscrew and remove the oil filter with the gasket (Fig. 2-4).
Unscrew the oil pressure indicator and oil pressure warning lamp sensors, remove the sensor fittings. Remove the crankcase ventilation breather cover, crankcase and oil pump. Remove the oil separator drain pipe retainer and take out the crankcase ventilation oil separator. Remove the crankshaft pulley, securing the flywheel with a retainer. A:60330/R(see Fig. 2-10) and unscrewing the ratchet with the A.50121 key (Fig. 2-5).
Remove the cylinder head cover and the camshaft chain drive cover. Unscrew the bolts securing the camshaft sprockets and the oil pump drive shaft.
Loosen cap nut 6 (Fig. 2-6) of the chain tensioner, unscrew nuts 4 securing it to the cylinder head: remove the tensioner and, having unscrewed bolt 2, remove shoe 3 of the chain tensioner.
Loosen the chain stop pin, remove the oil pump and camshaft drive sprockets and take out the chain.
Loosen the nuts of studs 4 (Fig. 2-7). Remove the camshaft bearing housing. After unscrewing the nuts of studs 4 and removing the thrust flange 1, carefully, so as not to damage the surface of the bearing housing supports, remove the camshaft.
Loosen the cylinder head mounting bolts and remove it together with the exhaust manifold and intake manifold. Remove the thrust flange 1 (Fig. 2-8) of the oil pump drive shaft and remove the shaft from the cylinder block. Use the universal puller A.40005/1/7 from the A.40005 kit to remove the sprocket from the crankshaft (Fig. 2-9). Loosen the connecting rod bolt nuts, remove the connecting rod caps and carefully remove the pistons with connecting rods through the cylinders.
Note: When disassembling the engine, mark the piston, connecting rod, main and connecting rod bearing shells so that they can be installed in their original place during assembly.
Install retainer 5 (Fig. 2-10), unscrew bolts 3, remove washer 4 and flywheel from the crankshaft. Remove the front clutch housing cover. Using ejector A.40006, remove the gearbox primary shaft bearing from its seat in the crankshaft (Fig. 2-11).
Remove the crankshaft oil seal retainer.
Unscrew the main bearing cap bolts, remove them together with the lower bearing shells, remove the crankshaft, upper bearing shells and thrust half rings on the rear support.
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