Pic. 2.68. The sequence of unscrewing the bolts of the cover of the balancing mechanism
In several passes, sequentially, unscrew the eight mounting bolts and remove the cover of the balancing mechanism (pic. 2.68).
Pic. 2.69. Measuring clearances in plain bearings with a plastic gauge
Using a plastic calibrator, measure the clearances in the plain bearings for each journal (pic. 2.69).
Pic. 2.70. The order of tightening the bolts for fastening the cover of the balancing mechanism
Apply some engine oil under the heads and on the threads of the mounting bolts. Install the balancer cover. In several passes, sequentially, tighten the eight bolts securing the balance mechanism cover with a tightening torque of 22 Nm (pic. 2.70).
Paint the bolts. Tighten the bolts by 90°in the sequence shown in Figure 2.70. Make sure the bolt markings are now at 90°from their original position (fig 2.71).
Pic. 2.71. Correct position angle and marking location: 1 - marking label
Remove the balancer cover. Measure the maximum width of the flattened gauge wire to determine the radial clearance.
Radial Clearance:
- standard - 0.004–0.031 mm;
- maximum allowable - 0.031 mm.
If the clearance exceeds the limit, replace the balancer shaft bearings. If the clearance is within specification, reinstall the balancer shaft bearings.
Note. When replacing standard size liners, use liners of the same size group. There are three standard sizes of earbuds.
Bearing bed diameter:
- marking «1» - 26.000–26.006 mm;
- marking «2» - 26.007–26.012 mm;
- marking «3» - 26.013–26.018 mm.
Shaft journal diameter – 22.985–23.000 mm
Liner wall thickness (in the central part):
- marking «1» - 1.486–1.489 mm;
- marking «2» - 1.489–1.492 mm;
- marking «3» - 1.492–1.495 mm.