Page 202 2
nd
Edition – Rev 0
12-10
FUEL SYSTEM – SERVICING PRACTICES
Refueling Procedure
Take care that no foreign objects are inadvertently introduced into the
filling port.
1. Apply aircraft’s and refueling vehicle’s ground, through the engine muffle
2. Place a container under the fuel sump drain valve
3. Open the drain valve (refer to Figure 1)
4. Wait for complete water/moisture defueling
5. Close drain valve
6. Open the filler cap
7. Fill as required
8. Close the filler cap
9. Clean up any fuel spilled
10. Repeat the procedure for the other tank
11. Remove aircraft’s ground
Fuel Contamination Check Procedure
1. Apply aircraft’s ground
2. Place a glass container under the drain valve
3. Open the drain valve
4. Fill the glass container and close the drain valve
5. Check fuel sample:
a. must be clear and clean
b. there should be no water inside
c. there should be no deposits inside
Fuel System Drainage Procedure
1. Apply aircraft’s ground
2. Place a container under the Gascolator
3. Open the Gascolator drain valve
4. Wait for complete defueling
5. Place a container under the fuel sump drain valve
6. Open the drain valve (refer to Figure 1)
7. Wait for complete defueling
8. Close the drain valve
9. Repeat for the other fuel tank
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