5.2.4 ADJUSTING PRE-LOAD OF WHEEL BEARING

5.2.4 ADJUSTING PRE-LOAD OF WHEEL BEARING

(1) As shown in Figure 5.34, apply grease (amount: 80% of space capacity) on the hub, inner bearing, outer bearing and cap. Also apply grease on the lip of the oil seals. (2) Set bearings on the hub and install the hub on the knuckle spindle. (3) Install the plain washer and tighten the adjustment nut to the torque of 206.0 - 235.4 N·m {21 - 24 kgf-m (152 - 174 ft-lbs)}. Back off the adjustment nut then retighten to the torque of 9.8 N·m {1 kgf-m (7.2 ft-lbs)}. (4) Lightly tapping the hub with a wooden hammer, rotate the hub 3 to 4 turns to make certain there is no looseness. (5) Tighten the adjustment nut to the position which allows the cotter pin to be set. (6) Tapping the hub with a wooden hammer, rotate the hub 3 to 4 turns to secure smooth rotation and measure the starting torque.

Starting torque: 2.94 - 7.85 N·m {0.3 - 0.8 kgf-m (2.2 - 5.8 ft-lbs)}

(7) When the starting torque is other than the specified, replace the plain washer and adjustment nut.

Repeat the operations described in step (3) and after to obtain the specified starting torque. (8) Lock the adjustment nut with the cotter pin.

Apply grease (amount: 80% of space)

Apply grease (amount: 80% of space)

Fig. 5.34 Preload Adjustment