Removal of engines M110 and M123 Exhaust system (OG) Above - carbureted engines below - fuel injected engines 1 - receiving pipe; 2, 4 - central muffler; 3 - rear muffler; 5 - catalytic converter; 6 -...
Removing the cylinder head Removing the cylinder head If the engine has not yet been removed from the vehicle, first carry out the following operations: 1. Disconnect the wire «masses» from the...
Removing the camshaft M123 engine 1. If the engine has not yet been removed from the vehicle, the cylinder head does not need to be removed, although the camshaft sprocket should still be...
Disassembly of the cylinder head Note. All nodes should be marked to ensure correct assembly. 1. Remove the pressure pads from the top of the valves. 2. Using a valve spring compressor, compress the...
Replacing the camshaft chain Details of the distribution chain on the engine M 123 28 - crankshaft sprocket; 53 - camshaft gear; 85 - right guide; 89 - top guide; 93 - bottom guide; 94 - restrictive...
Removing the intermediate sprocket and shaft Section of the vibration damper of the crankshaft and pulley 1 - pulley; 2 - bolts; 3 - washers; 4 - vibration damper; 5 - pins; 6 - flange; 7 - oil seal; 8 - flange; 9...
Removing the flywheel (drive disk) 1. If the engine has not yet been removed from the vehicle, remove the clutch or automatic transmission, depending on the design. 2. Holding the flywheel (driving disc)...
Replacing the front crankshaft oil seal 1. Remove the radiator and cooling fan. Also remove, where required, the drive belts. 2. Using a hex socket wrench, remove the pulley and vibration damper bolts from the...
Removing the oil pump The location of the oil pump mounting bolts 1. Remove the fuel pump where necessary and drain the crankcase oil. 2. Turn away bolts of the oil pallet from the block of...
Removing rods and pistons 1. Remove the cylinder head, crankshaft front oil seal and oil pump. 2. Remove the oil return tube, dipstick tube from the sump housing. If necessary, insert a soft...
Removing the crankshaft and main bearings Removing the sprocket and timing chain 1. Remove the pistons or alternatively disconnect the main bearings if you do not need to perform any operations on the pistons...
Oil filter replacement 1. The oil filter should be changed every 10,000 km on engines manufactured before 1980 and every 8,000 km on engines manufactured after 1980. 2. Place a container under...
Engine mount replacement Removing the engine mount 1. Turn on manual (parking) brake, then jack up the front of the vehicle and place jack stands under it (tragus). 2. Loosen the engine mount...
Inspection and restoration of pistons and piston rings 1. If the pistons are being reinstalled on the engine, carefully remove the piston rings by spreading each ring just enough to remove through the web between the grooves...
Inspection and restoration of cylinders in the block 1. Check the cylinder bores in the block for taper, ovality, nicks and scratches. Start by carefully inspecting the top of the holes. If they are worn, a small ridge...
Inspection and restoration of the oil pump Oil pump parts 1. Remove the spring clip from the oil pickup tube, remove the filter and rubber stand. 2. Mark the position of the mounting bracket, unscrew and remove...
Engine Assembly 1. To ensure maximum service life and minimum disruption, a reconditioned engine must not only be properly assembled, but must also be immaculately clean. All oil...
Installation of the crankshaft and its bearings Pressing the crankshaft rear oil seal into the crankcase before cutting off Crankshaft mounted in rear main bearing (the rear seal is indicated by an arrow) Free...
Installation of connecting rods and bearings 1. Clean the beds of the liners and the bearing caps of the big head of the connecting rod, the channels and nests in the connecting rods. 2. Install the bearing shells...
Oil pump installation 1. Insert the oil pump into the bottom of the cylinder block. 2. Insert and tighten the crankcase mounting bolts and the main bearing cap bolt. 3. Install the oil pan...
Installing the flywheel (drive disk) 1. Measure the narrow part of the mounting bolts with a vernier caliper. It must not be less than indicated in the technical data. Replace bolts if necessary. 2. Dry the...
Installing an intermediate sprocket and shaft M110 engine 1. Using a soft metal drift, press the rear shaft bearing flush into the cylinder block. Make sure that the groove is in its highest position. 2. Install the...
Cylinder head assembly 1. Lubricate the threads, then insert the tappet ball pin into the cylinder head and tighten it. 2. Install the lower spring seats and seals over the valve guides. On...
Installing the camshaft Engine M 110 Camshaft Bolt Tightening (engine M 110) 1. Install the camshaft bearings in the front of the casing. 2. Install thrust washers on the front end of the...
Installing the cylinder head The location of the dowel pins on the cylinder block (engine M 110) 1. Clean the surfaces of the cylinder head and block and install a new gasket on the block pins. Do...