J. The tests that follow use aluminum or copper deactuator shields and/or steel actuator bars, known as slugs, on the proximity sensors.
(1)
Do not use force when you put the slugs in their positions.
(2)
Decrease the slugs thickness for the correct fit.
TASK 31-26-00-715-172
2. Aural Warning Module Operational Test
_____________________________________
A. General
(1) This test is a quick check of the takeoff warning horn. The test does not do a check of all the devices which make noise in the aural warning devices box.
B. References
(1) AMM 24-22-00/201, Manual Control
C. Access
(1) Location Zone
101/102 Control Cabin
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A 737-300/400/500MAINTENANCE MANUAL
Thrust Lever Position Measurement
Figure 501 (Sheet 1)
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A 737-300/400/500MAINTENANCE MANUAL
FLIGHT MANAGEMENT COMPUTER (FMC)/CONTROL DISPLAY UNIT (CDU)
Thrust Lever Position Measurement
Figure 501 (Sheet 2)
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A 737-300/400/500MAINTENANCE MANUAL
WARNING SWITCH FLAP TAKEOFF
SEE C
ACTUATED LANDING THRUST LEVER S139 AND S140 WARNING SWITCHES, SEE B WARNING SWITCHES STABILIZER TAKEOFF SEE D
WARNING SWITCHES, ACTUATED TAKEOFF THRUST LEVER S814 AND S815 UNIT FLAP CONTROL
SEE A
SPEED BRAKE TAKEOFF WARNING SWITCH
THRUST LEVER ACTUATED TAKEOFF WARNING SWITCHES, S814 AND S815
SEE E
(REF 31-26-21 FOR SWITCH DETAILS) A
STA 360
S139
S140
TORQUE SWITCH MECHANISM
ACTUATOR ASSEMBLY FWD
POTENTIOMETER ASSEMBLY
THRUST LEVER ACTUATED LANDING WARNING SWITCHES, S139 AND S140 B Takeoff Warning System Adjustment Figure 502 (Sheet 1)
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A
737-300/400/500
MAINTENANCE MANUAL
FLAP LANDING
WARNING SWITCH
(S138)
A
SWITCH
COVER
A
FLAP TAKEOFF WARNING SWITCH (S130) SEE A-A
FLAP CONTROL UNIT INBDFWD
C
FLAP LANDING WARNING SWITCH (S138)
SWITCH RETAINER NUTS
FLAP TAKEOFF
WARNING SWITCH
(S130)
PIN
SWITCHES S130 AND S138
A-A
Takeoff Warning System Adjustment
Figure 502 (Sheet 2)
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A 737-300/400/500MAINTENANCE MANUAL
GIMBAL
POINT
