TM10-3930-660-20 18-21. BOOM WEAR PADS -   INSPECT  (Cont’d) e. Apply (6). f. 3. IF Measure (4). Loctite thickness of wear pads 242 to threads of screws Secure cover (8) to outer boom with four new lockwashers (7) and four screws  (6). NECESSARY, CHECK FOR PROPER WEAR PAD  CLEARANCES. a. b. c. d. e. f. g. h. Start engine, TM10-3930-660-10. Fully extend inner boom (5). Stop engine, TM10-3930-660-10. Use lifting device to move inner boom (5) up and down and from side to side. Check for clearance of 0.01 to 0.13 inch between wear pads and surfaces of inner and intermediate booms. Remove lifting device after measuring clearance. Start engine, TM10-3930-660-10. Fully extend intermediate boom (3). Stop engine, TM10-3930-660-10. Use lifting device to move intermediate boom (3) up and down and from side to side. Check  for clearance of 0.01 to 0.13 inch between wear pads and surfaces of intermediate and outer booms. If clearances measured in steps 3b and 3d are not within limits, wear pads are worn or quantity of wear pad shims is incorrect. Refer to direct support maintenance. 18-83