TM 10-3930-664-24 4-28.   DIFFERENTIAL LOCK REPLACEMENT (FRONT AXLE ASSEMBLY) 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 Spanner Wrench (31, App.   E) Torque Wrench (32, App.   E) Materials / Parts Equipment Condition: Loctite No.   242 (20, App.   C) Differential gear replacement O-Ring, Item 12 (1 ea.) (para 4-26), steps 1, 2, 3 O-Ring, Item 13 (2 ea.) O-Ring, Item 14 (1 ea.) O-Ring, Item 15 (2 ea.) O-Ring, Item 16 (1 ea.) A.   REMOVAL 1.     Position box end wrench on nut (2) and hold slot  in position  using  a  flat  blade screwdriver.   Remove differential   lock   lever   (3)   and   change   selector   by removing nut. WARNING Ring nut (4) is under spring pressure. Loosen nut carefully to prevent injury to personnel. 2.     Slowly remove ring nut (4) using a spanner wrench. 3.     Place jaws of open end wrench into slots on base of cylinder (5).   Turn wrench using vise grip to remove cylinder from intermediate cover (1). 4.     Remove  spring  (6)  and  piston  (7)  from  cylinder  (5). Remove and discard O-rings (8, 9, 10). 5.     Remove O-rings (11, 12) from intermediate cover (5) and discard. 4-77

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