Diesel engines — replacing the timing belt Figure 291 shows the parts of the gas distribution mechanism drive; the picture can be used when replacing or removing parts. The toothed belt must be replaced every 100,000 km. At this point it has reached its normal...
Cylinder head — removal and installation Below is a description of how to remove and install the cylinder head without removing the engine. Figure 29 is a cylinder head assembly drawing showing some of the parts that need to be removed when removing the...
Disassembling the cylinder head Clamp the cylinder head in a vice by the bracket attached to one of the exhaust manifold studs. Remove the camshaft. Unscrew the bolts of the bearing caps crosswise from the edges to the middle and remove the covers To...
Cylinder head overhaul Check the wear of all cylinder head parts. Clean cylinder head surfaces (Use a scraper to remove the remains of the old seal without scratching the cylinder head material). Checks and controls should be carried out in...
Cylinder head assembly Clean all cylinder head parts and lay them out on a workbench so that they are in the order of assembly. If the valves have been ground in, they must be installed in the appropriate seats, since the grinding pattern of...
Installing the cylinder head Place a new head gasket on the cylinder block. Make sure that the front side of the gasket matches the front side of the engine. Both pins must go through the spacer. Check that the pin at the end of the camshaft is on...
Checking and adjusting valve clearances On diesel engines, valve clearances are checked and adjusted when the engine is cold. Remove the cylinder head cover. Check valve clearances as follows: Crank the engine until the piston of the first cylinder is in the...
Checking cylinder compression If you suspect that a cylinder has low compression, you should use a compression meter to check it in individual cylinders. This is more difficult to do on a diesel engine, since an adapter is required that is screwed...
Pistons and connecting rods — removal and disassembly The details of the crank mechanism along with the pistons and connecting rods are shown in Figure 313. To remove the pistons and connecting rods, the cylinder head and oil pan must be removed (as well as an oil pump),...
Cylinder measurement A cylinder dial indicator is required to measure cylinders (pic. 89), with which you can measure in the middle and at the bottom of the cylinder. If the dial indicator is missing, the following work cannot be carried...
Assembling pistons and connecting rods When assembling pistons and connecting rods, observe the following instructions: Arrow on the piston crown (either applied, or on a new connecting rod with an arrow) should face the front of the engine. Label "VORN" on...
Installation of pistons and connecting rods Lubricate the cylinder bore. Sort all connecting rods by cylinder numbers. Label "VORN" on the connecting rod and on the piston crown should be directed towards the engine pulleys. Distribute the joints of the piston...
Crankshaft and flywheel Work on the crankshaft and related parts in the same way as was done for gasoline engines. In this case, you should work using a table of dimensions and adjustments, since it contains different data regarding backlash,...
Engine cooling system Everything that has been described for gasoline engines mainly applies to diesel engines. Therefore, this chapter concerns only the differences when removing and installing certain parts. This applies, for example, to a...
Removing and installing the water pump Removal and installation of the water pump is explained in Figure 316. In addition to the toothed belt, it is also necessary to remove the high-pressure fuel pump to provide access to the water pump. The following work...
Engine thermostat The thermostat is located in the inlet fitting of the cooling system, that is, before removing the thermostat, the coolant must be drained to a height below the fitting. The thermostat is checked in the same way as on a...
Engine lubrication system The lubrication system is supplied with a centrifugal pump. The design of the pump is shown in Figure 317. Pic. 317. Installation drawing of the oil pump. 1. Drive gear; 2. Oil pump; 3. Pressure reducing valve; 4....
Removing, reassembling and installing the oil pump To access the pump, remove the timing belt, guide roller and crankshaft sprocket. Also remove the oil pan. The oil pump is bolted to the front of the engine and sealed with an O-ring. The mounting bolts have different...
Checking the engine oil level The operating description given for gasoline engines also applies to diesel engines. Special oils are used to fill diesel engines.
Diesel fuel injection device Cleanliness is a prerequisite for all work on a diesel engine. Be sure to clean the union nuts of the pressure pipe before loosening them. The high pressure fuel pump cannot be disassembled or repaired. and if it fails,...
Precautions when working with the injection device When carrying out any repair work on the injection device, regardless of its volume, maintain cleanliness. The following points should be especially taken into account: All work on the injection device must be carried...
Operating a vehicle using diesel fuel At certain temperatures, crystals form in diesel fuel, making the fuel thicker so much that it cannot pass through the filter. To prevent these operational disruptions, gas stations sell fuel that corresponds to a...
Diesel engine fuel filter The fuel filter is replaced according to the instructions in the operating instructions and must be replaced if the filter warning light comes on, indicating that there is water in the filter. Disconnect the connector...
High pressure fuel pump Removal and installation If a new high-pressure fuel pump is installed, all parts of the injection device should be checked. Drain the cooling system. Disconnect the throttle cable from the high pressure fuel pump....
Injectors — removal and installation For crimping or repairing an injector! should be taken to a diesel engine workshop. Do not under any circumstances do this work yourself, since in addition to the need to have a special tool, the injection pressure can...
Glow plugs The only ignition-related parts are the glow plugs, which are used to initially preheat the combustion mixture. The glow plugs are energized after turning the ignition key to the glow position. The supply voltage is at...
Adjusting the idle speed The idle speed adjustment is 100% perfect if the fuel injection quantity at idle speed is adjusted. This adjustment can only be made using special devices. However, general monitoring and temporary adjustments to ensure...
Adjusting the maximum speed The maximum speed is set at the factory and this adjustment should not be violated. Like idle speed, maximum speed is regulated by the amount of fuel injected. This adjustment requires special equipment. Figure 323...
Table of tightening forces of threaded connections — diesel engine Cylinder head bolts 86 An exhaust manifold 47 Camshaft bearing cover 1 8 Main bearing cap bolts 105 Oil pump to cylinder head 8 Connecting Rod Bearing Cap 65 Camshaft gear 100 Toothed belt tensioner to cylinder head 37...