PMC Test Procedures
Figure 505 (Sheet 1)
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73-21-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
Test Number______ Description___________ If Test Fails
13
N2 Alternator Winding Check lead/installation Replace N2 alternator (73-21-08)
14
N2 Alternator Winding Insulation Check lead/installation Replace N2 alternator (73-21-08)
15 N1 Sensor Check lead/sensor Replace N1 speed sensor (77-12-01 MP)
16 N1 Sensor Insulation Check lead/sensor Replace N1 speed sensor(77-12-01 MP)
17 Torque Motor Winding Check lead/installation Replace MEC (73-21-01)
18 Torque Motor Winding Insulation Check lead/installation Replace MEC (73-21-01)
PMC Test Procedures
Figure 505 (Sheet 2)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
Test ______ ___________Description _____________If Test Fails
Number
19
PLA RVDT Transducer Check lead/installation Replace MEC (73-21-01)
20
PLA RVDT Transducer Insulation Check lead/installation Replace MEC (73-21-01)
21
PMC Activate Switch Check PMC warning light and PMC switch (Fig.
(a)
Open (Enabled) 506). If OK, replace PMC (73-21-01). If
(b)
Closed (Disabled) not OK, replace P5-68 engine module in aft overhead panel (Ref 73-21-12).
NOTE: Airplane power must be on to allow PMC warning light to illumi-nate (Ref 24-22-00).
PMC Test Procedures
Figure 505 (Sheet 3)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
A
PMC Flight Compartment Switch Location
Figure 506
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
(b)
Make sure the multimeter is connected to the PMC SRT with the meter probe jumpers.
(c)
Open the fan cowl panels to get access to the PMC and related engine cable harness (AMM 71-11-02/201).
(d)
Disconnect engine harness connectors P2, P3, and P4 from the PMC connectors J2, J3, and J4.
(e)
Connect the Main Engine Test Cable J2A connector to the airplane engine wiring harness connector P2.
(f)
Connect the Main Engine Test Cable J3A connector to the airplane engine wiring harness connector P3.
(g)
Connect the Main Engine Test Cable J4A connector to the airplane engine wiring harness connector P4.
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