(a)  
11Q28, POSN LIGHTS-LEFT

(b)  
11Q30, POSN LIGHTS-RIGHT

(c)
11M7, WHITE ANTI-COLL LIGHT
S 014-003-002

(2)  
Remove the lower LE access panel between OSS 868.17 and WBL 740.00: S 024-004-002

(3)  
Remove the transformer:

(a)  
Disconnect the electrical connector.

(b)  
Remove the 4 bolts and washers holding the transformer.

(c)  
Remove the transformer.

Aviation Partners Boeing
757-200 MAINTENANCE MANUAL SUPPLEMENT  Part II
TASK 33-43-03-404-005-002
3.  Wing Position Light - Transformer Installation (Fig. 401)
A.  Equipment
(1) An ohmmeter or equivalent tool that can measure a resistance of 0.0025 ohm
B. References
AMM 20-10-31/201, Seals On Open Electrical Terminals In Fuel Vapor Areas
AMM 24-22-00/201, Electrical Power - Control
AP57.2-0615-2 WDM Supplement to WDM 33-43-11 thru 33-43-12

C.  Access
(1)  Access Panels
Lower Wing Leading Edge

D.  Procedure
S 424-006-002

(1)  
Install the transformer:

(a)  
Clean the bracket until it is free from corrosion and unwanted materials.

(b)  
Fay seal between the mounting brackets and transformer with BMS 5-95.

(c)  
Install the transformer with the 4 bolts and washers.

(d)
Connect the electrical connector.
S 764-007-002

(2)  
Make sure the resistance from the transformer to the bracket measures no more than 0.0025 ohm.

S 394-008-002
WARNING: MAKE SURE THAT YOU SEAL THE TRANSFORMER TO PREVENT AN EXPLOSION OF FUEL FUMES. AN EXPLOSION CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(3)  
Do this task: "Seal The Open Terminals" (AMM 20-10-31/201) to seal the transformer. S 414-013-002

(4)  
Install the access panel that was removed.

Aviation Partners Boeing
757-200 MAINTENANCE MANUAL SUPPLEMENT  Part II
S 864-015-002
(5)  
Remove each DO-NOT-CLOSE tag and close the applicable circuit breakers on the overhead circuit breaker panel, P11: a) 11Q28, POSN LIGHTS-LEFT b) 11Q30, POSN LIGHTS-RIGHT c) 11M7, WHITE ANTI-COLL LIGHT S 864-014-002

(6)  
Supply electrical power (AMM 24-22-00/201). S 714-016-002

(7)  
Do a test of the transformer:

(a)  
On the anti-collision and landing light control panel, P5, push the POSITION switch to the ON position.

(b)  
Make sure that both the front and the aft wing position lights connected to the transformer come on correctly.

(c)  
Push the POSITION switch to the off position.

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