TM10-3930-660-20 15-3. COUNTERWEIGHT - REPLACE This task covers: a. Removal b.  Installation Initial Setup Tools Tool Kit, Automotive Mechanics Forklift, 4000 lb. capacity Cable/Chain, 4000 lb. capacity Equipment  Condition Vehicle parked on level ground. Load backrest removed from storage position,  TM10-3930-660-10. Use extreme caution when lifting counterweight (1) with a forklift. Never allow forks to tip forward. Counterweight top mount pin holes must be fastened to the lifting forklift when counterweight (1) is not supported by vehicle being worked  on. When placing forks in counterweight (l), tips of forks must not protude past front of counterweight (l). Possible damage to vehicle engine from forks may result. 2. Weight of counterweight (1) is 3600 lbs. (1636  kg). Use a forklift of at least 4000 lbs. capacity for lifting the 3. counterweight (l). 1. POSITION FORKLIFT FORKS IN 4. COUNTERWEIGHT POCKETS (2) AND RAISE FORKS JUST ENOUGH TO RELEASE TENSION FROM  PINS  (3). REMOVE TWO LOCKPINS (4) AND TWO STRAIGHT PINS (3). FASTEN COUNTERWEIGHT (1) TO FORKLIFT USING CHAIN OR CABLE. LIFT COUNTERWEIGHT (1) APPROXIMATELY ONE INCH AND THEN TILT FORK TIPS UP JUST ENOUGH TO CLEAR COUNTERWEIGHT FROM VEHICLE FRAME MOUNTS (5). 15-2