4-80. RADIUS RODS MAINTENANCE (Con't).
Form a small, rigid S-hook from in. (6.4 mm) bar stock. Attach a steel tape to one end of the S-hook.
Attach S-hook and steel tape around kingpin (15). S-hook must rotate freely around kingpin.
Measure distances "A" and "B" between kingpin (15) and center mark of each end of axle spindle (17).
Measurements must be within 1/16 in. (1.6 mm) of each other.
If measurements are not within 1/16 in. (1.6 mm) of each other, loosen nut (14) at each end of radius rod (4) on
roadside. Turn middle portion (16) of radius rod right or left as necessary to 0aline axle, then tighten nuts.