- key "13"
- 1.25mm thick mounting ring
- indicator with stand and support plate
- calipers
Press the oil seal and outer race of the differential bearing out of the gearbox housing (see subsection 11.1.6., operations 17 and 18).
The preload of the differential bearings should be (0.25±0.1) mm. The preload is provided by selecting (by thickness) adjusting ring from those supplied as spare parts. The adjusting ring is installed in the socket of the gearbox housing under the outer ring of the differential bearing.
The thickness of the adjusting ring T (mm) of the differential bearings is determined by the formula:
T = S + C + Y,
where S is the measured axial displacement of the differential, mm;
C – differential bearing preload (0.25±0.1 mm);
Y – thickness of the mounting ring (1.25 mm).
For example, with an axial clearance of 0.95 mm, the thickness of the adjusting ring should be T = 0.95 + 0.25 + 1.25 = 2.45 mm.
1. Insert a 1.25mm thick locating ring into the gearbox housing socket under the differential bearing.
2. Press the outer race of the differential bearing into the socket of the transmission housing using a suitable drift (for more details, see subsection 11.1.6., operations 20 and 21). Also press the bearing ring into the clutch housing if it was pressed out.
3. Install the differential into the gearbox housing, then the gearbox housing onto the clutch housing.
4. Tighten the three equally spaced crankcase mounting bolts to the appropriate torque. Rotate the differential a few turns to adjust the bearings.
5. Install a support plate of the appropriate diameter on the end of the differential flange on the clutch housing side.
6. Fix the indicator to the stand. Install the indicator leg on the support plate with a pre-tension of 1 mm.
7. Applying force from below to the differential housing (using a suitable tube), move the differential up to the stop. Do not rotate the differential around the axis. Measure the axial movement of the differential by reading the indicator.
8. Calculate the required thickness T of the differential bearing adjusting ring using the formula. Select an adjusting ring with a thickness of T±0.1 mm from those supplied as spare parts. Install the selected adjusting ring into the gearbox housing socket and press in the outer ring of the differential bearing.