Scheme for selecting adjusting rings when installing rear bearings of the primary and secondary shafts
Execution order
1. Measure the distance a from the mating surface of the gearbox housing to the rear end of the outer ring of the rear bearing of the primary shaft.
2. Measure the distance b from the mating surface of the gearbox housing to the rear end of the outer ring of the secondary shaft rear bearing.
3. Measure the distance c from the mating surface of the cover to the end of the secondary shaft rear bearing seat.
4. Measure the distance d from the mating surface of the cover to the end of the rear bearing seat of the primary shaft.
5. To ensure a bearing preload of 0.1 mm, calculate the thickness of the adjusting rings using the formulas:
– for the primary shaft bearing: S1 = d – a + T – 0,1,
where T is the thickness of the gasket, equal to 0.4 mm;
– for secondary shaft bearing: S2 = c – b + T – 0,1,
where T is the thickness of the gasket, equal to 0.4 mm.
6. Select adjusting rings with thickness equal to S1 and S2. Adjusting washers with thickness of 1.53 are supplied as spare parts; 1,58; 1.63 and 1.68 mm for the primary shaft rear bearing and 0.15 to 1.40 mm thick with an interval of every 0.5 mm for the secondary shaft rear bearing.