INSPECT AND REPAIR BALL SPHERICAL BEARING
There shall be no more than 20 damaged
areas in any 3/4 inch wide band (2) around
surface of bearing (1). There shall be
no more than five damaged areas in any
quarter-section of the band. The total of
length plus width of all five areas shall not be
more than 5-1/2 inches.
There shall be no more than 75 damaged
areas over entire surface.
Fluorescent inspect damaged area to check for
cracks. (Refer to TM 1-1500-335-23.) There
shall be no cracks. If a crack in the ball spherical
bearing is suspected, refer to TM 1-1520-253-23.
Blend out damage with emery cloth (E123) or
abrasive paper (E13). Observe limits of step 3.
Smooth blended area with crocus cloth (E122).
Do not leave any sharp edges.
Acid etch reworked area as follows:
Acetic acid (E21) is combustible and
toxic. It can irritate skin and cause
burns. Avoid inhaling. Use only with
adequate ventilation, away from
open flame. Avoid contact with skin,
eyes, or clothing. In case of contact,
immediately flush skin or eyes with
water for at least 15 minutes. Get
medical attention for eyes.
Prepare solution of 3 parts acetic acid (E21)
to 7 parts water. Wear gloves (E186) and
Swab area with solution for 2 minutes. Use
gauze sponges (E184).
Rinse area with cold water.