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Pic. 76. Crankshaft and mating parts on the example of the 602 engine (similar parts are used on the 601st engine): 1 — a bolt of fastening of an asterisk of a chain drive on a cranked shaft; 2 — a washer of a bolt of fastening of an asterisk of a chain drive; 3 - torsional vibration damper (if it is installed); 4 - twin drive sprocket; 5 - key; 6 - bearing shells of the crankshaft; 7 - crankshaft; 8 - adjusting thrust half rings, 5 size groups; 9 - landing pin; 10 - remote washer; 11 - radial ball bearing; 12 - washer; 13 - combined two-mass flywheel; 14 - flywheel mounting bolt; 15 - locking plate; 16 - flywheel, standard version; 17 - gear ring of the flywheel; 18 - vibration damper hub (if it is installed); 19 - locating pin; 20 - washer; 21 — a bolt of fastening of a vibration damper / a belt pulley to a nave (if it is installed); 22 - vibration damper hub (if it is installed); 23 - belt pulley (if it is installed); 24 — a bolt of fastening of a vibration damper and a belt pulley
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Pic. 90. Front flange of the crankshaft (without vibration damper): 1 - belt pulley; 2 — a bolt with a head under an internal hexagon, 23 Nm; 3 — a washer of a bolt of fastening of a belt pulley; 4 — a bolt of fastening of a belt pulley, 200 Nm + 90°; 5 - landing pin; 6 - hub; 7 - front cuff of the crankshaft; 8 - dowels (2 pieces); 9 - crankshaft; 10 - camshaft drive sprocket; 11 — a cover of the mechanism of a drive of a camshaft
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Pic. 91. Front flange of the crankshaft (with vibration damper): 1 - belt pulley; 2 — a bolt with a head under an internal hexagon, 23 Nm; 3 - washer of the bolt for fastening the belt pulley and the vibration damper; 4 - bolt for fastening the belt pulley and vibration damper, 200 Nm + 90°; 5 - torsional vibration damper; 6 - landing pin; 7 - hub; 8 - front cuff of the crankshaft; 9 - dowels (2 pieces); 10 - crankshaft; 11 - camshaft drive sprocket; 12 — a cover of the mechanism of a drive of a camshaft
The engine is equipped with one belt pulley and one torsional vibration damper. As seen in fig. 76, not all belt pulleys are the same design. The mounting holes of the vibration damper are engaged with the belt pulley through a dowel pin that engages in the corresponding hole in the belt pulley. The method of mounting individual parts of torsional vibration damping systems on both types of engines is shown in fig. 90 and 91. On older engines of a similar design, three elastic washers were placed under the central bolt. Now these washers have been abandoned and only one bolt holds the parts to the crankshaft. If the belt pulley and vibration damper are made as separate parts, the belt pulley is bolted to the vibration damper. The TDC scale and pointer are located on the vibration damper.
To remove and install parts, you must perform the following operations:
- remove the soundproof upholstery in the lower part of the car, as well as the components and parts of the front of the car in order to provide free access to the belt pulley;
- release the tension and remove the V-ribbed belt as described above in the relevant chapter;
- secure the crankshaft from turning. To do this, you can turn on any gear and apply the parking brake. Otherwise, you can remove the starter and block the flywheel ring gear accordingly (or the drive disc - in the case of an automatic transmission);
- remove the crankshaft belt pulley together with the vibration damper, if they are mounted on the same hub (see bottom left of fig. 76). By unscrewing the bolts in the inner cavity of the belt pulley, you can remove the parts;
- unscrew the belt pulley mounting bolt if the engine has the parts shown in the lower left part of fig. 76, or unscrew the bolt in the center of the vibration damper if the engine has the parts shown in the same figure above. If the hub cannot be removed with a normal tool, then use some suitable puller.
Each belt pulley has a specific diameter, matched to the specific engine type. This should be remembered if the pulley needs to be replaced. When installing the crankshaft hub and belt pulley or when installing the vibration damper, proceed as follows:
- turn the crankshaft until the key grooves on the crankshaft and the hub match, insert the key into the groove and fit the hub or the combined pulley / vibration damper on the shaft;
- put a special washer on the bolt of the belt pulley or the combination pulley / vibration damper, generously lubricate its threaded part, tighten to 200 Nm, and then finally another 1/4 turn. The crankshaft must be secured against turning;
- install the vibration damper and pulley if the engine is complete, as shown in the bottom left of fig. 76. Tighten the bolts inside the pulley with a torque of 25 Nm;
- install and tighten the V-ribbed belt as described in relevant subsection;
- carry out the rest of the work in the reverse order of removal.