(b)
Remove the nut from the switch.
(c)
Remove the switch from the flap control unit.
(d)
Put the nut, the roller guide, and the pin on the switch to keep the parts together.
SEE A
SWITCH COVER BSEE FLAP CONTROL UNIT
FLAPS 10-DEGREE SWITCH (S584)
ROLLER GUIDE (EXAMPLE)
FLAPS UP LIMIT SWITCH (S245)
STALL WARNING SWITCH (S856)
FWD INBD
A
Flap Control Unit
Figure 401
MACH TRIM SWITCH (S290)
RETAINING NUTS
PIN
LANDING WARNING SWITCH (S138)
TAKEOFF WARNING SWITCH (S130)
FLAPS DOWN LIMIT SWITCH
INBD (S246)
B
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737-300/400/500MAINTENANCE MANUAL
TASK 27-51-87-404-010
3. Flap Limit Switch Installation
______________________________
A. Special Tools and Equipment
(1)
Wrench Set - Limit Switch, Flap Control Unit - F80197-5
B.
Consumable Materials
(1)
D00013 Grease - MIL-G-23827
C.
References
(1)
SWPM 20-10-13, Standard Wiring Practices Manual
(2)
SWPM 20-20-00, Standard Wiring Practices Manual
(3)
AMM 27-51-00/201, Trailing Edge Flap System
(4)
AMM 27-51-87/501, Flap Limit Switches
D.
Access
(1)
Location Zones
101, 102 Control Cabin
217 Right Main Wheel Well
E.
Procedure
S 424-029
(1)
Install the flap limit switch (Fig. 401):
(a)
Remove the pin, the roller guide, and one nut from the switch.
(b)
Put the switch in its position on the flap control unit.
(c)
Install the nut to hold the switch in its position.
(d)
Put the switch roller guide in its position on the switch.
(e)
Install the pin to hold the roller guide in its position.
S 764-015
(2) Do this task: "Check Electrical Bond" (SWPM 20-20-00).
NOTE: The resistance between the switch and the flap control unit
____
must be less than 0.0025 ohm.
S 434-033
(3) Attach the electrical wires:
NOTE: As an alternative, you may cut and splice the wires on the
____
switch (SWPM 20-10-13).
(a)
Connect the switch leads to the connectors.
(b)
Attach the connectors to the receptacles.
(c)
Install new wire bundle ties.
(d)
Install the two wire bundle support clamps.
(4)
Do this task: "Flap Limit Switch Adjustment" (AMM 27-51-87/501).
(5)
Install the lockwire on the nuts.
S 824-031
S 434-021
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737-300/400/500MAINTENANCE MANUAL
S 604-022
(6)
Apply a thin layer of grease to the switch cover.
S 434-023
(7)
Install the switch cover on the flap control unit.
F.
Put the Airplane Back to Its Usual Condition
S 444-024
(1) Do this task: Trailing Edge Flap System Activation" (AMM 27-51-00/201).
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