TM  10-3930-643-34 HYDRAULIC  SYSTEM  TROUBLESHOOTING  AND  MAINTENANCE. 12-10. Boom Assembly. (Sheet 5 of 11) REMOVAL 22. 23. 24. 25. 26. 27. 28. Using a hammer and punch, a 7/16” socket and socket wrench handle, remove two seals (28), bushings (29) and lubrication fitting (30) from lever (31). Discard seals (28). Attach hoist and sling to boom assembly (40) and take up slack. Using a 1-1/8”   socket and socket wrench handle. remove two bolts (32), washers (33) and pins (34). Using a safety rope, fasten lift cylinders  to  vehicle  to  prevent cylinder  rod  ends  from  dropping  when boom assembly (40) is removed. Remove two bolts (35), washers (36) and pins (37). Using a hoist and sling, remove items 38 thru 40 as an assembly and p1ace on suitable work bench. Boom assembly  (40)  weighs  approximately 2100 lbs. Remove hoist and sling. GO to sheet 6 12-79