Flow Control Valve Test Table 501
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////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES/MAINTENANCE MANUAL ////////////////////////
(d) If the data from the test and the table are different, the flow control valve does not operate correctly. Replace the flow control valve (AMM 49-31-92/401).
S 725-013
(7) APUs WITHOUT ALLIEDSIGNAL SB GTCP85-49-7096; Examine the fuel temperature indicator and the airflow at the overboard dump line:
(a) Install one end of flexible tubing on the overboard dump line.
NOTE: The minimum length of flexible tubing must be a minimum
____
of 3 feet (0.9 m).
(b)
Put the other end of flexible tubing into a bucket of water
that is away from the APU.
(c)
Start and operate the APU (AMM 49-11-00/201).
(d)
Write the value shown on the fuel temperature indicator on the P5 forward overhead panel.
(e)
Look for air bubbles from the flexible tubing in the bucket of water.
(f)
If you see air bubbles from the flexible tubing in the bucket of water, the value on the fuel temperature indicator must be 62°F (17°C) or lower.
(g)
If you see a small quantity or no air bubbles from the flexible tubing in the bucket of water, the value on the fuel temperature indicator must be above 62°F (17°C).
(h)
If the airflow and the value on the fuel temperature indicator are different, replace the flow control valve (AMM 49-31-92/401).
S 915-004
(8)
Do the APU usual shutdown (AMM 49-11-00/201).
S 865-008
(9)
Attach a DO-NOT-OPERATE tag to the APU master switch on the P5 forward overhead panel.
S 025-017
(10)
APUs WITHOUT ALLIEDSIGNAL SB GTCP85-49-7096; Remove the flexible tubing from the overboard dump line.
S 415-009
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.
(11) Install the lower shroud:
(a) Hold the lower shroud against the upper shroud.
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(b) Close the shroud latches.
S 415-010
(12) 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 865-011
(13) Remove the DO-NOT-OPERATE tag from the APU master switch on the P5 forward overhead panel.
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FUEL SENSING FLOW CONTROL CHECK VALVE - REMOVAL/INSTALLATION
____________________________________________________________
1. General
_______
A. This procedure contains the removal and the installation tasks for the check valve for the fuel sensing flow control. During this procedure, the valve is referred to as the check valve.
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