The device of the balancing mechanism (VAZ-1111)

To compensate for the inertial forces from the crank mechanism parts, the engines have two balancing shafts 1 and 12 (see figure 3). Each of them is mounted in the cylinder block on two ball bearings and is driven by a gear transmission from the drive pinion at the rear end of the crankshaft. To ensure the correct position of the shaft gravity centers, the drive pinions are provided with alignment marks (see figure 25).

In addition to the balancing masses of the shafts, there are also one-sided lugs on the flywheel and the generator drive pulley. Since the 1111 and 11113 engines have different piston masses, they have correspondingly different imbalance values for the balancing shafts, flywheel, and generator drive pulley.

Therefore, for distinction on these parts of engine 11113 there are marks. On the flywheel — an annular groove ∅ 135 mm on the side of fastening to the crankshaft. On the balance shafts — an annular groove near the seating surface for the rear bearing. On the generator drive pulley on the rear side there is an annular groove ∅ 120 mm.