TM 5-3810-300-24 & P2
C. Bent steering arms, cross tube arms or steering knuckles should be replaced rather than straightened. (It is not
necessary to remove steering arms and cross tube arms from the knuckle unless replacements are required).
REPLACEMENT OF STEEL BACKED BRONZE STEERING KNUCKLE BUSHINGS.
Service replacement of steering knuckle bushings can be accomplished with a suitable press, and a bushing removal and
installation bar. The bar (shown in the sketch below) can be made from a piece of round bar stock which is ground with a
step to serve as a pilot. The dimension of the "X" diameter should be 0.10" less than the specified bushing bore, and the
dimension of the "Y" diameter should be 0.10" less than the steering knuckle bore. The pilot of this tool prevents
collapse or distortion of bushing during installation. To facilitate the removal and the installation of knuckle bushings,
follow these procedures:
A. Press worn bushing out of knuckle with a removal and installation bar of appropriate size.
B. Place new bushing on the small diameter of the bar and press it into the steering knuckle in three or more steps.
This allows the bushing to align itself with the bore.
First, press bushing into knuckle approximately 1/8" and relieve press pressure, press bushing in another 1/2"
and relieve press pressure. The bushing can now be pressed in until it is flush with the surface of the upper seal
counterbore for the top, or with the inside surface of the lower knuckle boss for the bottom.
C. To finish a bushing, either a burnishing bar or reamer must be employed. The dimensional limits of finished
bushing must correspond to the correct specification for the desired axle.
Utilization of burnishing ball for this operation must be avoided, as it does not insure a true alignment between
the two bushings.
BUSHING REMOVAL AND INSTALLATION TOOL
Dimension "X" is 0.10" less than the bushing bore.
Dimension "Y" is 0.10" less than the steering knuckle bore.
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