(b)
Close the shroud latches.
S 412-024
(9) Close the APU cowl door:
(a)
Disconnect the door suppor 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 862-025
(10) 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
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(b) Remove the DO-NOT-CLOSE tag from the APU master switch on the P5 forward overhead panel.
TASK 49-31-00-702-026
4. Fuel Leakage Check (Fig. 202)__________________
A. Standard Tools and Equipment
(1)
Pressure Gage, 0-100 psi (0-689 kPa)
(2)
Hose
(3)
Tee fitting
B. References
(1) AMM 24-22-00/201, Manual Control
C. Access
(1)
Location Zones
101 Control Cabin (Left)
205 Electronic Compartment
703 APU Compartment
(2)
Access Panels
1201 Electronic Equipment Access Door
3804 APU Cowl Door
D. Procedure
S 862-027
(1) Set these switches and the circuit breaker:
(a)
Set the APU master switch, on the P5 forward overhead panel, to the OFF position and attach a DO-NOT-OPERATE tag.
(b)
Set the No. 1 AFT FUEL PUMP switch, on the P5 forward overhead panel, to the OFF position.
(c)
Open this circuit breaker and attach a DO-NOT-CLOSE tag: 1) E3-3 Electrical Shelf, APU Control Unit
S 012-029
(2) Open the APU cowl door:
(a)
Open the latches for the APU cowl door.
(b)
Open the APU cowl door.
(c)
Connect the door support rods.
S 012-030
CAUTION:_______BE CAREFUL WHEN YOU MOVE THE LOWER SHROUD. DAMAGE TO THE SHROUD DRAIN LINES CAN OCCUR.
(3) Remove the lower shroud:
(a)
Hold the lower shroud and open the shroud latches.
(b)
Remove the lower shroud.
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////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE B
SEE A
A
BULKHEAD TEE FITTING INLET HOSE FUEL SUPPLY HOSE PRESSURE GAGE UNIT CONTROL FUEL INLET HOSE FUEL SUPPLY HOSE PRESSURE GAGE TEE FITTING BULKHEAD CONTROL UNIT FUEL
LOW PRESSURE FUEL FILTER
B 2
LOW PRESSURE FUEL FILTER
B 1
2 1 AIRPLANES WITH THE TAFCU AIRPLANES WITHOUT THE TAFCU
Fuel Leakage Check Figure 202
A45256
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(4) S 492-031Install the equipment to the fuel line: (a) Remove the inlet hose from the fuel control unit. (b) Remove the elbow fitting from the low-pressure fuel filter. (c) Remove the packing from the elbow fitting. 1) Discard the packing. (d) Install the tee fitting in the inlet port of the low-pressure fuel filter. (e) Connect the inlet hose to one side of the tee fitting. (f) Connect the hose to the other side of the tee fitting. (g) Install the pressure gage to the hose.
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