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Start Engines
- 1. The sequence of starting engines is: No.1, No. 2, No. 3, and No. 4.
- 2. Be sure the engine being started has been pulled through 3 or 4 complete revolutions.
- 3. If fire extinguisher system is installed , set the selector switch to the engine being started.
- 4. Indicate to the ground crew (by holding up fingers) which engine is being started.
- 5. When the copilot is ready, he will notify the pilot: "Standing by to start No.1."
- 6. Direct the copilot: "Start No. 1." The copilot will then energize Engine No.1, and at the same time expel all air from the primer with the number of strokes necessary to obtain a solid fuel charge. The primer must be HELD DOWN until needed again.
- 7. After approximately 12 seconds of energizing, direct the copilot to "Mesh No. 1." The copilot, while still holding down the starting switch at "START," moves mesh switch to the "MESH" position. At the same time he primes with strong, steady strokes until the engine fires.
- 8. If the engine fails to fire after the starter has turned it over 4 or 5 times, the copilot must release both switches quickly while the propeller is still turning. This prevents damage to, or sticking of, the starter.
If the starter dog sticks and the engine turns over while re-energizing, stop re-energizing immediately, cut the ignition switch, and release the starter dog by turning the propeller in the direction of rotation.
- 9. When the engine fires, move the mixture control to "AUTO-RICH" immediately.
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- 10. If the engine stops, return the mixture control to "OFF" immediately, and repeat the starting procedure. As soon as engine is running, copilot calls: "Oil pressure." Pilot notes pressure, and responds: "Coming up" when pressure reaches 50 lb. sq. in.
- 11. If no oil pressure is indicated within 30 seconds after starting, stop the engine and determine the cause.
- 12. Warm up engines at 1000 rpm until oil temperature of 40 C is indicated.
- 13. If it is necessary to engage by hand, signal to the ground crew by raising a clenched fist and pullling down an imaginary starter handle. One of the ground crew will pull the handle on the nacelle. Meanwhile, hold down both the starter and the mesh switches in the "ON" positions. The booster coil will function only when the mesh switch is on.
- 14. Repeat the same starting procedure on No. 2, No. 3, and No. 4 engine, in that order.
Flight Indicator and Vacuum Pressures
When an engine that operates a vacuum pump (No. 2 and No. 3 Engines) is started, check the rapid response of the flight indicator. With vacuum pump operating, the flight indicator should erect itself within a few moments. Sluggish response at this time indicates poor operation of the instrument. At the same time check (1) vacuum pressure - approcimately 3.75" to 4.25"; and (2) both pumps for proper operation.
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