The holes in the crankshaft pulley for the mounting bolts are positioned so that the pulley can only be installed in a certain position. Fig. 80 shows a section of the front end of the crankshaft.
Fig. 80. Section of pulley and damper.
1 - bolt M8,
2 - disc washer,
3 - bolt M18,
4 - washer,
5 - pulley,
6 - damper,
7 - balancing disk,
8 - mounting pin,
9 - oil seal,
10 - spacer,
11 - crankshaft sprocket,
12 - key,
13 - crankshaft,
14 - mounting pin 8x8.
When dismantling, do the following:
Remove the radiator and fan.
Loosen all drive belts and then remove them.
Secure the crankshaft from turning. To secure it, you can engage the gear in the gearbox or the parking brake. You can remove the starter and secure the toothed ring.
Remove the six crankshaft pulley mounting bolts. Only the same pulley can be installed when replacing.
Loosen the central bolt securing the damper.
Use a center punch to mark the relative positions of the balancing disk and the crankshaft (see fig. 81).
Fig. 81. Applying marks to the balancing disk and crankshaft.
Using a puller, remove the balancing disc as shown in Fig. 82. Pay attention to the position of the three disc washers (direction of concavity).
Fig. 82. Removing the balancing disk from the crankshaft.
When installing, do the following:
Install the balancing disk on the crankshaft, aligning the holes for the mounting pins.
Place a key into the crankshaft and tighten the M18 bolt; place four washers on the bolt with the concavity towards the bolt head.
Press in two locating pins.
While holding the crankshaft from turning, tighten the central mounting bolt to a torque of 400 Nm.
Install the damper, crankshaft pulley, radiator and fan.
Fig. 83. Pulley and damper parts.
1 - mounting pin,
2 - bolt M18,
3 - disc washers,
4 - bolt M8,
5 - washer,
6 - pulley,
7 - damper,
8 - mounting pin,
9 - mounting pin 8 mm,
10 - balancing disk,
11 - oil seal,
12 - bushing,
13 - crankshaft sprocket,
14 - key.