UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) - CONTINUED
Table 1. Unit Preventive Maintenance Checks and Services (PMCS) for 621B Scraper - Continued.
NOT FULLY MISSION
c. Inspect the brake drums (7), linings
(Cont.) or Annually
(8) and cams (9) for wear or dam-
d. If excessive wear on the brake
drums (7) or linings (8) exists, or
the brake cam (9) cannot be
adjusted, replace as necessary (WP
Oil level should reach bottom of the plug opening.
a. Drain and refill hydraulic tank (WP