MEC Fittings and O-Rings
Figure 412 (Sheet 3)
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73-11-01
ALL ú
ú C01 Page 429
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E35054
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE A
VBV CLOSED A END FITTING A AND PORT
VBV OPEN END PORT
CDP (PS3)PORT
CBP PORT
A
MEC Top Fittings
Figure 413 (Sheet 1)
E35172
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73-11-01
ALL ú ú C01 Page 430 ú Jul 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEEB
PCR PORT
OVERBOARD DRAIN PORT
HEATED SERVO SUPPLY FITTING
O-RINGVBV OPEN END FITTING
O-RING
VBV OPEN END PORT FWD
VBV OPEN
END PORT
TOP VIEW
A-A
OVERBOARD DRAIN FITTING
HEATED SERVO SUPPLY PORT
O-RING
VBV CLOSED END PORT PCR PORT
B
MEC Top Fittings Figure 413 (Sheet 2)
HEATED SERVO
SUPPLY PORT
VBV CLOSED
END PORT
OVERBOARD
DRAIN PORT
E35246
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
73-11-01
ALL ú
ú C01 Page 431
ú Jul 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(f)
ENGINES WITH THE HPTCC TIMER;
TC3 port
PC port
(g)
PCR port
(h)
Heated servo supply (FUEL-OUT) port
(i)
POC (PS12 Line) port
(j)
PB port
(k)
P6 port
(l)
CDP port
(m)
CBP port
(n)
Upper overboard drain port (90° elbow and fitting)
(o)
Lower overboard drain port (45° elbow and fitting)
(p)
P7 port.
S 494-035-C00
(24)
Put protective caps on the plumbing lines and the open ports on the MEC and the fuel pump.
S 034-036-C00
(25)
If it is necessary, do the steps that follow to remove the servo fuel heater from the main oil/fuel heat exchanger:
(a)
Remove the FUEL-IN line that goes from the fuel pump to the
servo fuel heater.
(b)
Remove the six nuts and washers that attach the servo fuel
heater to the main oil/fuel heater.
(c)
Remove the servo fuel heater.
(d)
Remove the seal gasket from the mounting flange.
1) Examine the gasket for damage to the sealing surface.
2) Replace the gasket if it is damaged.
WARNING:_______DO NOT LET ENGINE OIL STAY ON YOUR SKIN. USE ENGINE OIL IN AREA WITH GOOD VENTILATION. ENGINE OIL IS POISONOUS AND CAN BE ABSORBED THROUGH YOUR SKIN. ENGINE OIL FUMES CANT IRRITATE YOUR RESPIRATORY TRACT.
(e)
Apply a thin layer of engine oil to the servo fuel heater
ports.
(f)
Install the protective caps.
S 024-037-C00
(26)
If it is necessary, do the steps that follow to remove the main oil/fuel heat exchanger from the fuel pump:
(a)
Remove the six nuts and washers.
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