3-10. 3-11. 3-12. 3-13. 3-14. 3-15. 3-16. When adding oil to the SC-5 CO₂ transfer pump that does not have a dip stick, you should fill the crankcase with oil to what level? 1. One-eighth of an inch from the top of the cup 2. One-fourth of an inch from the top of the cup 3. To the fourth thread 4. To the first thread Other than the crankcase, how many different lubrication points are required on the SC-5 transfer unit? 1. One 2. Two 3.    Three 4.    Four When lubricating the idler gear and the puny shaft, you should use what type of lubricant? 1. SAE 20 oil 2. SAE 30 oil 3. Vaseline 4. Light cup grease Motor bearings contain enough grease to keep the bearings lubricated for approximately how long? 1. 1 year 2. 2 years 3. 30 days 4. 6 months If it is necessary to wire the SC-5 CO₂ pump for 220 power, where can you find information on the wiring diagram? 1. In NAVAIR 13-1-6.1 2. In NAVAIR 13-1-6.2 3. In OPNAV 5510.1E 4. On the pump’s nameplate If you are required to change the electrical plug on a SC-5 CO₂ unit, the ground wire is which of the following colors? 1. Red 2. Green 3. White Carbon dioxide is stored under (a) what pressure and (b) at what temperature? 1. (a) 850 psig (b) 70°F 2. (a) 1800 psig (b) 70°F 3. (a) 2900 psig (b) 60°F b. (a) 3000 psig (b) 60°F 3-17. What is the purpose for running-in a 3-18. 3-19. 3-20. 3-21. 3-22. 3-23. new pump or one that has been idle for a long time? 1₀ To check for lubrication 2. To check for leaks of CO₂ 3. To loosen the bearing packings 4. To tighten the bearing packings Which of the following wrenches is used to tighten fittings and connections on the C-O-Two unit? 1. A 10-inch wrench 2. A 12-inch wrench 3. A pipe wrench (13 inches) 4. A crescent wrench (13 inches) Which of the following statements concerning a supply cylinder is NOT true? 1. A supply cylinder weighs 50 pounds 2. The maximum capacity of a supply cylinder is 50 pounds 3. 10 pounds of the contents may be gaseous 4. 40 pounds of the contents may be liquid A cool supply cylinder will transfer its contents more efficiently than a warm one. 1. True 2. False The time required to charge an empty cylinder increases with increased temperature of the cylinder. 1. True 2. False A large cylinder will recharge faster if it is placed in an upright position. 1. True 2. False To prevent expansion of CO₂ in the supply hose, the valve should have an opening of at least 1. 1/8 inch 2. 1/4 inch 3. 3/4 inch 4. 1 inch 12