71-21-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FORWARD ENGINE MOUNT - REMOVAL/INSTALLATION
___________________________________________
 1.  General
_______
 A.  This procedure contains four tasks. The first task is to remove the forward engine mount. The second task is to install the forward engine mount. The third task is to remove the cone bolt. The fourth task is to install the cone bolt.
 B.  The two forward engine mounts are found between the 11 o'clock and 1 o'clock positions on the fan frame. This procedure is applicable to the left and right forward engine mount.
 C.  You must remove the engine from the strut before you can remove the forward engine mounts.
 TASK 71-21-01-004-001-C00
 2.  Remove the Forward Engine Mount (Fig. 401)
_______________________________
 A.  References
 (1)  
71-00-02/401, Power Plant

 B.  
Access

 (1)  
Location Zone
 506 Engine No. 1 - Fan Frame
 606 Engine No. 2 - Fan Frame

 C.  
Procedure

 S 024-002-C00
 (1)  
Remove the power plant (Ref 71-00-02/401).

 S 034-003-C00

 (2)  
Remove the bolts and washers that attach the mount to the fan frame.

 S 034-004-C00

 (3)  
Remove the mount.

 TASK 71-21-01-404-005-C00
 3.  Install the Forward Engine Mount (Fig. 401)
________________________________
 A.  References
 (1)  
71-00-02/401, Power Plant

 B.  
Access

 (1)  
Location Zone
 506 Engine No. 1 - Fan Frame
 606 Engine No. 2 - Fan Frame

 C.  
Procedure

 S 434-006-C00
 (1)  Install the mount on the fan frame with the holes in the fan frame support aligned with the holes in the fan frame.
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 71-21-01
 ALL  ú ú C01 Page 401 ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
A
A
SEE  A 
WASHER (4 LOCATIONS)  BOLT (4 LOCATIONS)  FAN FRAME SUPPORT (EXAMPLE)  CONE BOLT 
NUT 
WASHER 
FWD  BOLT SHOULDER WASHER  SNUBBER 
BUSHING (REF)  BOLT RETAINER WASHER 
RETAINER  A 
Figure 401 (Sheet 1) Forward Engine Mount Installation

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 ALL  ú ú C02 Page 402 ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FWD

LOCKWIRE
A-A
Forward Engine Mount Installation
Figure 401 (Sheet 2)

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 71-21-01
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F87815
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 994-027-C00
 CAUTION: MAKE SURE THAT THE WASHERS ARE INSTALLED UNDER THE UPPER AND
_______ LOWER BOLTS OF THE LEFT AND RIGHT FAN FRAME SUPPORTS. INCORRECT WASHER INSTALLATION CAN CAUSE DAMAGE TO THE FAN FRAME SUPPORTS AND FAN CASE THREADS.
 (2)  
Install the two smallest bolts and washers in the top end (12 o'clock position) of the support.
　
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