ARMY TM  5-6115-612-34 MARINE CORPS TM 6115-34/8 AIR  FORCE TO  35C2-3-471-2 NAVY AG-320BO-MME-OOO 2-7. ENGINE AND GEARB0X REMOVAL AND INSTALLATION.  (cont) a. Removal. (cont) (21)  Rig  lifting  device  in  a manner similar to one shown in figure 2-3, sheet 3. (14) Tag and  disconnect  elec- trical  connections  from  starter  (8). CAUTION (15)  Tag  and  disconnect  elec- trical connections from low oil pres- sure shutdown switch (9). (16) Drain oil from gearbox in accordance with paragraph  4-8,  TM 5-6115-612-12. (17) Remove fuel drain hose from retaining  clamp. (18)  Tag  and disconnect oil cooler supply and return lines (10) from engine. Install  protective  caps. NOTE Remainder of procedure requires two personnel. (19) Remove capscrews (11) Fig 2-3 and washers (12) that secure engine sup- port assemblies (13) to floor of engine housing. (20) Make sure all wires, lines, and hoses are clear of engine, gearbox, and generator. WARNING The engine, gearbox, and generator  weigh  approximately  165 pounds (74.84 kg). To prevent injury, use proper lifting device during  removal  and  installation. To prevent damage, one person must guide and steady engine while it is being hoisted out of engine housing. (22)  Firmly  steady  and  guide engine to ensure proper balance and that  engine  does  not hang  up  on electrical wiring, fuel lines, oil lines, or exhaust nozzle. Slowly hoist engine out of engine housing and clear of generator set. (23) Carefully lower engine to floor. Ensure  that  engine  support  is squarely  on floor before fully releasing hoist. b. Installation. WARNING The engine and gearbox weigh approximately 165 pounds (74.84 kg). To  prevent injury, use proper lifting device during removal  and  installation. CAUTION To prevent damage, one person must guide and steady engine while it is being hoisted into engine  housing. NOTE This procedure requires two personnel. 2-66