Over-sized refers to the diameter of the king-pin.
old-blue,
The bushing for an oversized kingpin has an over-sized inner diameter (an over-sized hole for the over-sized kingpin) and the bushing has the same outer diameter (to fit into the holes in the spindle/knuckle).
The kingpin hole in the axle must be reamed to a larger diameter to allow the oversized kingpin to fit. This hole in the axle must be reamed at the proper angle.
Tim
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1 Outer Wheel Bearing
2 Wheel Spindle
3 Wheel Hub
4 Wheel Hub Bolt
5 Brake Drum
6 Brake Wheel Cylinder
7 Brake Flange Plate
8 Brake Bleeder Valve and Screw
9 Brake Wheel Cylinder Hose Connection
10 Inner Wheel Bearing
11 Lubrication Fitting
12 Inner Bearing Oil Seal
13 Kingpin Lock Pin
14 Brake Shoe
15 Brake Lining
16 Kingpin
17 Kingpin Thrust Bearing
18 Lubrication Fitting
19 Tie Rod End
20 Axle I-Beam
21 Steering and Third Arm
