ADJUSTING THE DIFFERENTIAL BEARING PRE-LOAD..........................................................................................D1

Bevel gear and differential

– Adjust the bearing nuts to move the crown wheel away from or closer to the pinion, starting on the crown wheel side. – Tap the bearings lightly with a plastic hammer to ensure correct seating. – Adjust the bearing slotted nuts as follows: • If the backlash measured is below the stated tolerance range, screw in the nut on the side away from the crown wheel and screw out the other nut by the same amount. • If the backlash measured is above the stated tolerance range, screw out the nut on the side adjacent to the crown wheel and screw in the other nut by the same amount.

36 36

Adjusting the differential bearing preload

– Adjust the meshing backlash beforehand. – Wind a cord around the splines in the pinion shaft. – Measure the force required to rotate the crown wheel and pinion assembly "F". – Depending on the bevel pinion preload "P" measured previously, apply the formula: F = P + 3,2 at 4,8 daN. – Example: If P = 11 daN, F = 14,2 to 15,8 daN. – Adjust the different bearing nuts with the same torque while ensuring that the preset backlash is maintained.

Note: Do not invert the bearing nuts or the direction in which the crown wheel is fitted.

451hsm48 Fig. 37

F

451hsm46 Fig. 38