9 DO THE VSV FEEDBACK CABLE
39 ADJUST THE VSV FEEDBACK STATIC RIGGING CHECKCABLE (AMM 75-31-02/501).
(AMM 75-31-02/501).
IS THE RIGGING CHECK CORRECT?

YES NO

10 DO THE VBV FEEDBACK CABLE
40 ADJUST THE VBV FEEDBACK STATIC RIGGING CHECKCABLE (AMM 75-32-05/501).
(AMM 75-32-05/501).
IS THE RIGGING CHECK CORRECT?

DO THE VSV ACTUATOR RIG CHECK (AMM 75-31-00/501), THEN(AMM 75-31-00/501). ADJUST THE VSV FEEDBACK CABLE IS THE RIG CHECK CORRECT? (AMM 75-31-02/501).
YES
YES
13 USE A BORESCOPE AND
EXAMINE THE BOOSTER, HPC 3RD-,
5TH- AND 9TH-STAGE BLADES,

COMBUSTION CHAMBER AND HPT BLADES (AMM 72-00-00/601). IS DAMAGE MORE THAN THE LIMITS FOUND?

NO
SEE SHEET 3 (BLOCK 14)
Slow/Hung Acceleration
Figure 101 (Sheet 2)

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
FROM SHEET 2 (BLOCK 13)

NO
YES

14 CHECK LOW AND HIGH IDLE
TOLERANCES (AMM 71-00-00/501,
TEST 4).

IS ADJUSTMENT REQUIRED?

NO
NO
15 ONLY ON ENGINES WITH THE
5TH-STAGE START BLEED VALVE,
ADJUST THE MEC SPECIFIC

GRAVITY TO THE LOW END OF THE PERMITTED RANGE FOR THE FUEL (AMM 71-00-58/501, FIG. 103).
DOES THE PROBLEM CONTINUE?
YES
NO
16 ADJUST LOW AND HIGH IDLE
SPEED TO THE HIGH END OF
TOLERANCE (AMM 71-00-00/501,

TEST 4). DOES THE PROBLEM CONTINUE?

YES
NO

17 DO THE VSV DYNAMIC RIG
PROCEDURE (AMM 75-31-00/501).
 ADJUST THE VSVs TO THE
OPEN LIMIT.
 DOES THE PROBLEM CONTINUE?

YES
NO

CONTINUE TROUBLESHOOTING IF ADJUSTMENT WAS FOUND TO BE HIGH.
Slow/Hung Acceleration
Figure 101 (Sheet 3)

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
MENT THRUST LEVER MOVE-NO RESPONSE TO  PREREQUISITES ENGINE OPERATION CAN BE NECESSARY 
CHECK (AMM 71-00-59/101, FIG. 113). IS THE TRAVEL CHECK COR-RECT? 1 DO THE THRUST LEVER TRAVEL  NO  CABLE (AMM 76-11-07/401). LEVER CABLE (AMM 76-11-04/201) OR THE THRUST LEVER PUSH-PULL 21 REPAIR/REPLACE THE THRUST 

TEST (AMM 71-00-00/501, TEST (AMM 73-21-02/401) OR T2
NO. 11).SENSOR (AMM 73-21-09/401), AS ARE THE SENSORS SERVICE-APPLICABLE.
ABLE?
YES

No Response to Thrust Lever Movement
Figure 102

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
PREREQUISITES ENGINE OPERATION CAN BE NECESSARY
CANNOT GET TAKEOFF POWER WITH PMC "OFF"; PMC "ON OK" OR CANNOT GET TAKEOFF POWER WITH PMC "ON" AND PMC "OFF"

IS BLOCKAGE OR DAMAGE FOUND?

NO
YES
3 DO THE PS12 TUBE/MANIFOLD
CHECK (AMM 71-00-59/101,
FIG. 106).
 ARE LEAKS FOUND?
NO
YES

5 EXAMINE THE CDP AND CBP
TUBING, AND TUBE DRAIN HOLES,
FOR LEAKS, DAMAGE, OR BLOCKAGE

(AMM 71-00-59/101, FIG. 104 AND 105).
ARE LEAKS, DAMAGE, OR BLOCKAGE FOUND?

NO SEE SHEET 2 (BLOCK 7)
Cannot Get Takeoff Power with PMC OFF; PMC ON OK or Cannot Get
Takeoff Power with PMC ON and PMC OFF
　
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