TM10-3930-660-20 16-11. CAB SKYLIGHT GUARD AND WINDOW - REPLACE This task covers: a. Removal b.  Installation Initial Setup Tools Tool Kit, Automotive Mechanics Materials/Parts Ammonia Water (App. C, Item 3) Clear Silicone Caulk (App. C, Item 8) Equipment  Condition Lockwashers  (6) Vehicle parked on level ground. Metal Primer (App. C, Item 38) Ribbon Sealer (App. C,  Item  44) Seal (7) Sealing  Washers  (5) REMOVAL To avoid injury, replace broken window glass carefully. Wear a pair of heavy leather gloves or other suitable hand protection. Support window glass during removal and installation, as required, so it does not drop. Perform steps 1 and 2 for skylight window removal. Perform step 3 for skylight window guard removal. REMOVAL 1. 2. UNLATCH AND OPEN SKYLIGHT WINDOW GUARD  (1). REMOVE HARDWARE SECURING SKYLIGHT WINDOW (2) TO CAB (3). Remove four Capscrews (4), four sealing washers (5), four lockwashers (6) and four window frames (7) securing skylight window (2) to cab (3). Discard sealing washers (5) and lockwashers  (6). 16-18