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TM 10-3930-664-24 3-66.  MAST ASSEMBLY REPLACEMENT This task covers: Removal, Cleaning, Inspection, and Installation INITIAL SETUP: Tools and Test Equipment: Personnel Required: General Mechanics Tool Kit (1, App.  E) 2 Personnel Jack Stands, 2 ea.  (8, App.  E) Sling (4, App.  E) Drain Pan (10, App.  E) Hoist (59, App.  E) Wrench, Open End, 1-1/16 inch (51, App.  E) Wrench, Open End, 1-1/8 inch (52, App.  E) Reference: Equipment Condition: TM 10-3930-664-10 Carriage assembly removed (para.  3-65) A.  REMOVAL 1. Tilt mast assembly rearward.  Attach lifting sling to   inner   rail   of   mast   assembly   (1).      Lift   mast assembly to a height of 2-1/2 to 3 feet. 2. Support    mast    assembly    (1)    by    placing    jack stands   under   freelift   cylinder   mount   base   (2). Lower    mast    assembly    until    it    rests    on    jack stands. 3. Remove lifting sling from mast assembly (1) and attach to sideshift carrier (3).  Lift sideshift carrier to remove tension from freelift chain (4). 3-217

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