4. Install Knuckle Pin Installation.
A. Align the knuckle pin holes of the steering knuckle, axle center, and thrust bearing and lower seal assembly.
B. Place a jack under the lower side of steering
knuckle yoke and raise knuckle so that all
clearance is taken up between lower yoke, thrust
bearing and seal, and lower face of axle center
C. Align knuckle pin flat (or flats) to mate with draw key holes, and tap knuckle pin through knuckle yoke, axle center
and thrust bearing from top or bottom side.
DO NOT STRIKE THESE HARDENED STEEL PIECES DIRECTLY WITH A STEEL HAMMER.
D. Install the draw keys so that the flat on the key mates with the corresponding flat on the knuckle pin.
BEFORE SETTING THE DRAW KEY, CENTER KNUCKLE PIN TO EQUALIZE GAP BETWEEN UPPER
AND LOWER GAP MOUNTING SURFACES.
Draw keys should be installed one from each side of the axle center. DO NOT INSTALL BOTH KEYS FROM THE
E. On models employing threaded draw keys, install the draw key nuts and tighten to correct torque.
On models without threaded draw keys, secure each key in the axle center by prick punching edge of hole.
F. Check the clearance between the top face of upper axle center end and lower face of upper knuckle pin boss.
Rockwell-Standard does NOT recommend measurement of clearance tolerances on steering knuckles with shim
gauges. Measurement by shim gauges will tend to give false readings.
Procedure for measurement of end play with dial indicator is as follows: