TM 10-3930-659-20 13-4. PINTLE HOOK MAINTENANCE (Con’t) d. ASSEMBLY 1. Install chain (9) on new drive pin (10). 2. Install S-hook (5) and cotter pin (6) on chain (9). 3. Install drive pin (10) on lower jaw (8). 4. Install  cotter  pin  (6)  and  chain  (9)  in  upper  jaw (7). e. INSTALLATION Install pintle hook (2) on frame (1) with four washers (4) and bolts (3).  Torque bolts to 100 Ib.-ft. (136 N•m). TA706758 13-10