(b)
If the drain line has carbon material, clean the drain line
with the solvent:
1) Clean the drain line with the solvent.
2) Dry the drain line with the compressed air.
(c)
If the drain tee has blockage, remove the blockage with the
compressed air.
(d)
If the drain tee has carbon material, clean the drain tee:
1) Clean the drain tee with the solvent.
2) Dry the drain tee with the compressed air.
(e)
If there is blockage in the drain union on the combustion
chamber cap or in the plenum union on the turbine plenum,
remove the blockage:
1) Remove the combustor unit (AMM 49-31-42/401).
2) Use the vacuum cleaner to remove the blockage from the
inside of the combustion chamber cap or the turbine plenum.
(f)
If there is carbon material in the drain union on the
combustion chamber cap or in the plenum union on the turbine
plenum, clean the drain union or plenum union:
1) If it is not already done, remove the combustor unit
(AMM 49-31-42/401). 2) Clean the drain union and plenum union with the solvent.
a) If you must disassemble the combustor unit to remove the carbon material, install a new combustor unit (AMM 49-31-42/401).
(g) If the combustor unit was removed, install the combustor unit (AMM 49-31-42/401).
S 436-043
(8) Install the drain tee to the plenum union on the turbine plenum.
(a) Make sure the position of the drain union on the drain tee
points in the direction of the drain union on the combustion
chamber cap.
S 436-044
(9) Install the drain line:
(a) Connect the drain line to the drain union on the combustion
chamber cap.
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(b) Connect the drain line to the drain tee.
S 416-045
CAUTION: KEEP A MINIMUM CLEARANCE OF 0.18 INCHES (5 MM) BETWEEN THE
_______ ENGINE, FIRE DETECTOR, CLAMPS AND LOWER SHROUD.
BE CAREFUL WHEN YOU MOVE THE LOWER SHROUD. DAMAGE TO THE SHROUD DRAIN LINES CAN OCCUR.
(10) Install the lower shroud:
(a)
Hold the lower shroud against the upper shroud.
(b)
Close the shroud latches.
S 416-046
(11) Close the APU cowl door:
(a)
Disconnect the door support rods.
(b)
Put the door support rods in the clips on the APU cowl door.
(c)
Close the APU cowl door.
(d)
Close the latches for the APU cowl door.
S 866-047
(12) Set the circuit breaker and the switch:
(a)
Remove the DO-NOT-CLOSE tag and close this circuit breaker: 1) E3-3 Electrical Shelf, APU Control Unit
(b)
Remove the DO-NOT-OPERATE tag from the APU master switch on the P5 forward overhead panel.
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HIGH PRESSURE FUEL FILTER - SERVICING
_____________________________________
1. General
_______
A. This procedure gives the task to clean the high pressure fuel filter. When the high pressure fuel filter is cleaned, the filter element must be discarded and a new filter element installed. The filter element keeps all unwanted material from the governor for the fuel control unit.
TASK 49-31-81-603-011
2. High Pressure Fuel Filter Servicing (Fig. 301)
___________________________________
A. Standard Tools and Equipment
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