(b)
Put the clamp around the switch.
(c)
Connect the D2558 electrical connector to the switch.
(d)
Remove the temporary cap from the fitting.
(e)
Put a layer of antisieze compound on the fitting.
(f)
Attach the fitting to the switch.
S 864-014
(2) Close the applicable circuit breakers and remove the DO-NOT-CLOSE tags:
(a) On the P18 panel
1) For the left engine: a) ENG 1 AND WING A/I CONTROL b) ENG 1 COWL ANTI-ICE
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737-300/400/500MAINTENANCE MANUAL
2) For the right engine:
a) ENG 2 AND WING A/I CONTROL
b) ENG 2 COWL ANTI-ICE
S 864-015
(3) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) On the P6 panel
1) PITOT STATIC INDICATION - CAPTAIN
2) PITOT STATIC INDICATION - F/O
S 724-016
(4) Do a test of the pressure switch circuit.
(a)
Make sure the applicable left or right (engine 1 or engine 2) COWL ANTI-ICE light on the P5-11 module is off.
(b)
Open the applicable circuit breaker on the P6 panel and attach a DO-NOT-CLOSE tag: 1) For the left engine:
a) MASTER DIM SEC 1
2) For the right engine:
a) MASTER DIM SEC 4
(c)
Disconnect the pressure switch connector D2558.
(d)
Temporarily connect a wire between pins 1 and 2 of electrical connector D2558.
(e)
Remove the DO-NOT-CLOSE tag and close the applicable circuit breaker on the P6 panel: 1) For the left engine:
a) MASTER DIM SEC 1
2) For the right engine:
a) MASTER DIM SEC 4
(f)
Make sure the applicable left or right COWL ANTI-ICE light on the P5-11 module comes on.
(g)
Open the applicable circuit breaker on the P6 panel and attach a DO-NOT-CLOSE tag: 1) For the left engine:
a) MASTER DIM SEC 1
2) For the right engine:
3) MASTER DIM SEC 4
(h)
Remove the wire between pins 1 and 2 of electrical connector D2558.
(i)
Connect electrical connector D2558 to the pressure switch.
(j)
Remove the DO-NOT-CLOSE tag and close the applicable circuit breaker on the P6 panel: 1) For the left engine:
a) MASTER DIM SEC 1
2) For the right engine:
a) MASTER DIM SEC 4
(k)
Make sure the applicable left or right COWL ANTI-ICE light on the P5-11 panel is off.
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A 737-300/400/500MAINTENANCE MANUAL
(5) S 864-017Remove the DO-NOT-CLOSE tags and close these circuit breakers: (a) On the P6 panel 1) PITOT STATIC INDICATION - CAPTAIN 2) PITOT STATIC INDICATION - F/O
(6) S 844-018Remove electrical power if it is not necessary (AMM 24-22-00/201).
(7) S 414-019Close the fan cowl on the applicable engine (AMM 71-11-02/201).
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INLET COWL TAI OVERHEAT SWITCH - REMOVAL/INSTALLATION
_____________________________________________________
1. General_______
A. This procedure contains three tasks:
(1)
The removal of the overheat switch from the inlet cowl
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