CBP LINE
PS3 (CDP PORT) LINE
FUEL PUMP ASSEMBLY
(ENGINES WITH THE HPTCC TIMER)
A
Fuel Pump Package Aft Plumbing Line Installation
Figure 406 (Sheet 2)
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(d)
ENGINES WITH THE HPTCC TIMER;
Disconnect the PC line from the MEC.
(e)
Disconnect the sensor supply (P6) to the compressor inlet temperature (CIT) line from the MEC.
(f)
Disconnect the CIT sensor return (PB) line from the MEC.
(g)
Disconnect the clamps that attach the P6 and PB lines to the bracket on the MEC.
(h)
Disconnect the VBV OPEN line from the MEC.
(i)
Remove the flexible hose.
(j)
Disconnect the VBV CLOSE line from the MEC.
(k)
Remove the flexible hose.
(l)
Disconnect the PCR line from the fitting forward of the upper overboard drain fitting.
(m)
Disconnect the compressor discharge pressure, PS3 (CDP port), line from the MEC.
(n)
Disconnect the clamp that attaches the PS3 line to the bracket below the MEC. 1) Move the line down and attach it to the lines removed
above.
(o)
Disconnect the compressor bias pressure (CBP) (Bleed bias) line from the MEC. 1) Move the line down and attach it to the lines removed
above.
(p)
Disconnect the clamps that attach the TC1 and TC2 turbine clearance control lines.
(q)
ENGINES WITH THE HPTCC TIMER; Disconnect the clamps that attach the TC3 turbine clearance control line.
(r)
Disconnect the TC1 line from the lower end of the flexible hose.
(s)
Disconnect the TC2 line from the lower end of the flexible hose.
(t)
ENGINES WITH THE HPTCC TIMER; Disconnect the TC3 line at the lower end of the flexible hose.
S 034-024-C00
(13) Disconnect these plumbing lines from the lower side of the MEC (Fig. 407):
(a)
The PS12 pneumatic line from the POC port.
(b)
The T2 (P7) fuel line.
(c)
Disconnect these flexible plumbing lines from the fuel filter.
NOTE: Do not remove the lines from the differential pressure
____ switch for the fuel filter (Fig. 408):
-
Fuel inlet pressure line
-
Fuel outlet pressure line.
The differential pressure switch will be referred to as the switch.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE A
FUEL FILTER
PLA PLUG
T2 (P7) SEE C
FUEL LINE
PS12 PNEUMATIC (POC PORT) LINE
POC PORT
FWD B (PS12 PNEUMATIC LINE)
T2 (P7) FUEL LINE
C
MAIN ENGINE CONTROL
SEE B
A
MEC IDLE RESETRECEPTACLE
SOLENOID
FOR PLA RECEPTACLECONNECTOR
(D3016)
FWD
Fuel Pump Package Lower Plumbing Line Installation
Figure 407
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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