Differential: 1 – a driving gear wheel of a drive of a speedometer; 2 - satellite; 3 - side gear; 4 - driven gear of the main gear; 5 - the axis of the satellites; 6 - differential housing; 7 - differential bearing
You will need: screwdriver, socket head «at 17».
1. Remove the differential from the gearbox (see «Disassembly of the gearbox and troubleshooting of its parts»).
2. Turning 90°around the axis of the pinion gears, remove the side gears from the differential case.
3. Remove the retaining ring from the axis of the satellites.
4. Take out from the case of differential an axis of satellites and two satellites.
5. Turn out bolts of fastening of a conducted gear wheel to the case of differential.
6. Press the driven gear off the differential case.
7. Inspect the working surfaces of the satellites, the axis of the satellites, side gears and the spherical surfaces of the differential housing in contact with them. Eliminate small irregularities with fine-grained sandpaper. Replace parts with significant defects.
8. Check up a condition of a conducted gear wheel of a transmission. In the presence of chips, chipping and significant development of teeth, replace the gear. The main gears with different gear ratios are installed on the car.
On the driven gear, the number of teeth of the driving 1 and driven 2 gears is stamped.
Warning! The final drive gears at the factory are selected in pairs according to noise and contact patch. Therefore, when replacing the driven gear, also replace the drive gear: they are sold in pairs. To check, count the number of teeth on the drive gear.
9. Inspect the bearing seats on the differential case. At considerable development of these places replace the case of differential. In the presence of pitting (shells) on treadmills and rolling elements, traces of indentation of rolling elements on treadmills and damage to cages, bearings must be replaced.
10. To replace the bearings, use a puller to press them off the differential. As a result, the bearings are destroyed.
11. Then press the outer rings out of the gearbox and clutch housings with a special puller.
12. If the puller is missing, first press out the axle shaft seals. Please note that as a result, the seals are damaged and must be replaced (see «Replacing gearbox seals»). From the outer side of the crankcases, press out the bearing rings with a beard.
13. Please note that under the ring installed in the gearbox housing, there may be an adjusting ring, which must be re-selected before pressing in new rings (see «Selection of the differential bearing adjusting ring»).
14. If you need to replace the speedometer drive gear, you can press the bearing (without destroying it) using two screwdrivers, applying force to the inner ring of the bearing. The gear will collapse as a result, but it will still have to be changed.
15. Assemble the differential in the reverse order of removal, having previously lubricated all parts with gear oil. Install the driven gear with the marking facing out.
