TM 10-3930-659-20 17-32.    FORK/BOOM CYLINDER REPLACEMENT (Con't). WARNING Use  extreme  caution  when  handling  heavy  parts.    Lifting  device  Is  required  when  parts weigh over 50 lb (23 kg) for a single person lift, over 100 lb (45 kg) for a two person lift, and  over  150  lb  (68  kg)  for  a  three  or  more  person  lift.    Keep  clear  of  heavy  parts supported only by lifting device.  Failure to follow this warning may cause serious Injury or death to personnel. 2. Position fork/boom cylinder (6) on loader frame (8) and fork/boom assembly (1). 3. Apply a coat of grease to surface of pin (10). 4. Install spacer (9) and pin (10) on loader frame (8) and fork/boom assembly (1) with washer (11) and screw (12). 5. Install fork/boom cylinder hoses, lines, and fittings (see paragraph 17-25). 6. Apply a coat of grease to surface of pin (3). 7. Install  two  washers  (2)  and  pin  (3)  on  fork/boom  assembly  (1)  and  fork/boom  cylinder  (6)  with  washer  (4)  and screw (5). 8. Install locking control valve on fork/boom cylinder (see paragraph 17-10). FOLLOW-ON TASKS • Remove frame locking bar (see TM 10-3930-659-10). TA707681 17-99