2.
VBV FUEL GEAR MOTOR SEAL DRAIN
3.
FUEL SUPPLY AND MANIFOLD SHROUD DRAIN 1 FUEL SUPPLY DRAIN2
4.
HPT CLEARANCE CONTROL VALVE DRAIN AND RIGHT VSV ACTUATOR SEAL AND SHROUD DRAIN
5.
CIT SENSOR SHROUD DRAIN
1
ENGINES WITHOUT CFMI SB 73-1162
ENGINES WITH CFMI SB 73-116
6 810 11
79
B
6.
FORWARD SUMP DRAIN
7.
MEC CASING DRAIN
8.
MAIN OIL/FUEL HEAT EXCHANGER DRAIN
9.
MEC SHAFT DRAIN
10.
STARTER PAD DRAIN
11.
FUEL PUMP PAD DRAIN
Rear Drain System Inspection
Figure 604 (Sheet 2)
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71-71-00
ALL ú ú C01 Page 607 ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E75955
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
NO. DRAIN DRAIN/SOURCE FLUID ALLOWABLE LEAKAGE CORRECTIVE ACTION
LIMIT THRESHOLD LIMIT SERVICABLE
1 AND SHROUD ACTUATOR SEAL LEFT VSV FUEL (20 DROPS/MIN) (1 CC/MIN) 60 ML/HR (40 DROPS/MIN) (2 CC/MIN) 120 ML/HR (AMM 75-31-01/401). REPLACE VSV ACTUATOR
2 MOTOR VBV FUEL GEAR FUEL (20 DROPS/MIN) (1 CC/MIN) 60 ML/HR (40 DROPS/MIN) (2 CC/MIN) 120 ML/HR (AMM 75-32-01/401). REPLACE VBV FUEL GEAR MOTOR
3 FUEL SUPPLY AND MANIFOLD SHROUD FUEL NONE ALLOWED 1COMPONENTS AS REQUIRED. REPAIR/REPLACE LEAKING
FUEL SUPPLY FUEL NONE ALLOWED 2COMPONENTS AS REQUIRED. REPAIR/REPLACE LEAKING
4 HPT CLEARANCE CONTROL VALVE FUEL 90 ML/HR (1.5 CC/MIN) (30 DROPS/MIN) 180 ML/HR (3 CC/MIN) (60 DROPS/MIN) DISCONNECT DRAIN TUBES FROM COMPONENTS. IF ONLY ONE IS COMPONENT; VSV ACTUATOR WET, REPLACE RESPECTIVE CLEARANCE CONTROL VALVE FOR OTHER DRAIN. REPLACE COMPONENT AS REQUIRED. RECHECK LEAKAGE RATE. REPEAT (AMM 75-31-01/401), OR HPT (AMM 75-24-01/401). IF BOTH WET, PLUG ONE DRAIN SOURCE AND
RIGHT VSV ACTUATOR SEAL AND SHROUD FUEL 60 ML/HR (1 CC/MIN) (20 DROPS/MIN) 120 ML/HR (2 CC/MIN) (40 DROPS/MIN)
5 CIT SENSOR SHROUD FUEL NONE ALLOWED REPLACE CIT SENSOR (AMM 73-21-02/401).
6 FORWARD SUMP OIL 15 ML/HR (1 CC/4 MIN) (5 DROPS/MIN) 60 ML/HR (1 CC/MIN) (20 DROPS/MIN) REPLACE ENGINE (AMM 71-00-02/ 401).
7,9 MEC SHAFT AND CASING (COMBINED) FUEL 180 ML/HR (3 CC/MIN) (60 DROPS/MIN) 360 ML/HR (6 CC/MIN) (120 DROPS/MIN) REPLACE MEC (AMM 73-21-01/401).
8 OIL/FUEL HEAT EXCHANGER OIL AND/OR FUEL (1 CC/3 MIN) 20 ML/HR (7 DROPS/MIN) 40 ML/HR (2 CC/3 MIN) (14 DROPS/MIN) REPLACE OIL/FUEL HEAT EXCHANGER (AMM 79-21-02/401).
____LEAKAGE RATES IN DROPS PER MINUTE ARE BASED ON APPROXIMATELY 20 DROPS PER CUBIC CENTIMETER (CC).
NOTE:
FURTHER INVESTIGATION IS RECOMMENDED DURING AN ENGINE RUN WHEN THRESHOLD LIMIT IS EXCEEDED.
Rear Drain System Inspection
Figure 604 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
71-71-00
ALL ú ú C01 Page 608 ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E75961
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
NO. DRAIN DRAIN/SOURCE FLUID ALLOWABLE LEAKAGE CORRECTIVE ACTION
LIMIT THRESHOLD LIMIT SERVICABLE
10 STARTER PAD OIL 7 ML/HR (1 CC/9 MIN) (2 DROPS/MIN) (7 DROPS/MIN) (1 CC/3 MIN) 20 ML/HR AGB SEAL (AMM 72-60-00/201). DAMAGED OR MISSING, REPLACE 401). IF O-RING IS NOT STALL STARTER (AMM 80-11-01/ INSTALL NEW O-RING AND REIN-0-RING IS DAMAGED OR MISSING, STARTER DRIVE SHAFT. IF MISSING O-RING ON STARTER 401) AND CHECK FOR DAMAGED OR REMOVE STARTER (AMM 80-11-01/
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