(c)  
Tighten the VSV HEAD fitting to 270-300 pound-inches
 (30-34 Newton meters).

 (d)  
Tighten the TC1 fitting to 180-200 pound-inches
 (20-25 Newton meters).
 1) Install the flexible hose to the TC1 fitting.
 2) Tighten the coupling nut to 270-300 pound-inches

 (30-34 Newton meters).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(e)  
Tighten the TC2 fitting to 135-150 pound-inches (15-17 Newton meters). 1) Install the flexible hose to the TC2 fitting. 2) Tighten the coupling nut to 135-150 pound-inches

 (15-17 Newton meters).

 (f)  
ENGINES WITH THE HPTCC TIMER; Tighten the TC3 fitting to 135-150 pound-inches (15-17 Newton meters). 1) Install the flexible hose to the TC3 fitting. 2) Tighten the coupling nut to 135-150 pound-inches

 (15-17 Newton meters).

 (g)  
Tighten the PC fitting to 135-150 pound-inches
 (15-17 Newton meters).

 (h)  
Tighten the PCR fitting to 135-150 pound-inches
 (15-17 Newton meters).

 (i)  
Tighten the HEATED SERVO SUPPLY (FUEL OUT) fitting to 360-400 pound-inches (41-45 Newton meters).

 (j)  
Tighten the POC (PS12 line) fitting to 135-150 pound-inches (15-17 Newton meters).

 (k)  
Tighten the PB fitting to 180-200 pound-inches
 (20-25 Newton meters).

 (l)  
Tighten the P6 fitting to 180-200 pound-inches
 (20-25 Newton meters).

 (m)  
Tighten the CDP fitting to 180-200 pound-inches
 (20-25 Newton meters).
 1) Install the lockwire.

 (n)  
Tighten the CBP fitting to 135-150 pound-inches
 (15-17 Newton meters).
 1) Install the lockwire.

 (o)  
Tighten the UPPER OVERBOARD DRAIN fitting to
 180-200 pound-inches (20-25 Newton meters).
 1) Install the 90° elbow, but do not tighten.

 (p)  
Tighten the LOWER OVERBOARD DRAIN fitting to
 135-150 pound-inches (15-17 Newton meters).
 1) Install the 45° elbow, but do not tighten.

 (q)  
Tighten the P7 fitting to 135-150 pound-inches
 (15-17 Newton meters).

 S 434-018-C00
 (5)  Install the heated servo supply (FUEL-OUT) line between the servo fuel heater and the fitting on the MEC.
 (a)  
Tighten the coupling nuts to 340-375 pound-inches
 (38-42 Newton meters).

 (b)  
Install the lockwire.

 NOTE: It is easier to install the FUEL-OUT line before you
____
 install the fuel pump assembly.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 864-040-C00
 (6)  ENGINES WITHOUT THE HPTCC TIMER; Do these steps if the TC3 and/or PC ports do not have plugs installed (Fig. 407, 408 and 409).
 (a)  
Install the new O-rings, lubricated with petrolatum, on each
 hex-head plug.

 (b)  
Install the plugs in the TC3 and/or the PC ports.

 (c)  
Tighten the plugs to 40-60 pound-inches
 (4.5-6.8 Newton meters).

 S 034-041-C00
 (7)  
Remove the blanking plate from the fuel DISCHARGE port on the MEC to be installed.

 S 434-042-C00

 (8)  
Install the blanking plate on the MEC that you removed.

 (a)  Tighten the bolts to 55-65 pound-inches (6-7 Newton meters).
　
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