(7)
LOSS OF HARD COATING ON MID-SPAN SHROUDS

(8)
PLATFORM FRETTING

D.
IF DAMAGE IS FOUND, REFER TO 72-31-02 I/C FOR INSPECTION LIMITS.

E.
REMOVE MATS AND CHECK FOR LOOSE ITEMS OR TOOLS.

F.
REMOVE DO-NOT-OPERATE IDENTIFIERS FROM START LEVERS.

Fan Blade Check
Figure 109

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////

1ST-STAGE STATOR VANE CHECK
1.  EQUIPMENT AND MATERIALS A.PROTECTIVE MAT (2) - RUBBER MANUFACTURER'S ASSOC., GRADE SC43, NEOPRENE SPONGE, 1 INCH THICK,
APPROX. 3 X 4 FEET WITH WARNING STREAMERS ATTACHED
2.CHECK 1ST-STAGE STATOR VANES FOR DAMAGE

A. CHECK THAT START LEVERS ARE IN CUTOFF POSITION. INSTALL DO-NOT-OPERATE IDENTIFIERS.
B. INSTALL PROTECTIVE MATS IN LOWER HALF OF INLET COWL.
C. CHECK STATOR VANES FOR THE FOLLOWING:
(1)
BROKEN OR MISSING VANES

(2)
CRACKS

(3)
DISENGAGEMENT FROM INNER SHROUD

(4)
DISTORTED LEADING OR TRAILING EDGES

(5)
DENTS OR NICKS

(6)
MISSING MATERIAL

D.
IF DAMAGE IS FOUND, REFER TO 72-31-03 I/C FOR INSPECTION LIMITS.

E.
REMOVE MATS AND CHECK FOR LOOSE ITEMS OR TOOLS.

F.
REMOVE DO-NOT-OPERATE IDENTIFIERS FROM START LEVERS.

1st-Stage Stator Vane Check
Figure 110

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////

ABRADABLE SHROUD CHECK
1.EQUIPMENT AND MATERIALS A.PROTECTIVE MAT (2) - RUBBER MANUFACTURER'S ASSOC., GRADE SC43, NEOPRENE SPONGE, 1 INCH THICK, APPROX. 3 X 4 FEET WITH WARNING STREAMERS ATTACHED 2.CHECK ABRADABLE SHROUD FOR DAMAGE
A. CHECK THAT START LEVERS ARE IN CUTOFF POSITION. INSTALL DO-NOT-OPERATE IDENTIFIERS.
B. INSTALL PROTECTIVE MATS IN LOWER HALF OF INLET COWL.
C. CHECK ABRADABLE SHROUD FOR THE FOLLOWING:
(1)
RUB MARKS

(2)
CRACKS

(3)
IMPACT MARKS OR CRATERS

(4)
GROOVES OR FLAKING

D.
IF DAMAGE IS FOUND, REFER TO 72-33-00 I/C FOR INSPECTION LIMITS.

E.
REMOVE MATS AND CHECK FOR LOOSE ITEMS OR TOOLS.

F.
REMOVE DO-NOT-OPERATE IDENTIFIERS FROM START LEVERS.

Abradable Shroud Check
Figure 111

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
CHECK SCAVENGE OIL FILTER CLOGGING INDICATOR
1.  
OPEN LEFT FAN COWL PANEL (71-11-02 MP).

2.  
CHECK SCAVENGE OIL FILTER CLOGGING INDICATOR GLASS INSPECTION BOWL FOR EXPOSED RED POP-UP INDICATOR.

3.  
IF RED POP-UP INDICATOR IS VISIBLE, TROUBLE SHOOT FOR OIL FILTER CLOG INDICATED (71-00-44, FIG. 107).

4.  
CLOSE LEFT FAN COWL PANEL (71-11-02 MP).

SEE A
CLOGGING 
INDICATOR 
SEE  B  RED POP-UP 
INDICATOR 
GLASS 
INSPECTION 
BOWL 
SCAVENGE 
OIL FILTER 
SCAVENGE OIL FILTER CLOGGING INDICATOR 
A  B
Scavenge Oil Filter Clogging Indicator Check 
Figure 112 

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