TM10-3930-660-34 16-15.   EXTEND AND   RETRACT CHAINS - REPLACE This task covers: a. Extend Chain Removal b. Retract Chain Removal c. Extend Chain Installation d. Retract Chain Installation Initial Setup Tools Materials/Parts Tool Kit, Automotive Mechanics Cotter Pin (15) Lockwashers (2) Loctite #242 (App.  B, Item 41) Rope Equipment Condition Vehicle parked on level ground. Boom retracted. NOTE For retract chain, inner boom must be removed. EXTEND CHAIN REMOVAL 1. REMOVE PARTS (1-6 and 8-11). a. Remove four hex head capscrews (1), four lockwashers (2) and cover (3).  Discard lockwashers (2). b. Remove two retaining rings (4) and one pin (5). Disconnect extend chain (6) from clevis (7). c. If clevis (7) is damaged, remove nut (8), flatwasher (9) and clevis (7). d. Remove nut (10) and flatwasher (11) from clevis (12).  Remove clevis (12) from its mounting hole near hose tensioner. 16-94