TM 10-3930-653-14&P OPERATION TEST OF AUTOMATIC CLEARANCE ADJUSTER (1) Make    the  brake  shoe  diameter  nearly  the  specified  mounting  size,  and  pull  the  adjuster  lever  with  your  finger along  the  arrow  mark  as  shown  in  the  illustration  given  below  to  turn  the  adjuster  gear.    When  removing  your finger. the adjuster lever returns to its original position without rotation of the adjuster gear. NOTE : Even if the adjuster gear turns back along with the adjuster lever motion when removing your finger, the adjuster will operate normally, when braked in reverse travel, after it has been mounted on the truck. (2) If the adjuster fails to do the above operation when pulling the adjuster, proceed with follwoing inspection. (a) Make  sure  that  the  adjuster  lever,  adjuster,  adjuster  spring,  adjuster  cable  and  shoe-to-shoe  spring  are securely installed. (b) Check to see if the distance between the adjuster gear and the adjuster lever is 6 + 2 mm (0.15 + 0.135 in). See Fig.  8-25.  If unsatisfactory, replace the part.  Also check that the adjuster lever is in proper mesh with the gear. (c) Check  the  shoe-to-shoe  spring  and  adjuster  for  deterioration,  adjuster  for  proper  rotation,  gears  for  wear, and adjuster lever and its gear for damage. If unsatisfactory, replace. Fig.  4-466. 4-234