(a) Attach the ground wire with the nut [4] and washer [5].
SUBTASK 30-42-21-760-001
(5) Use an intrinsically safe approved bonding meter, COM-1550, to make sure the resistance
between the wiper motor/converter and the airplane structure is 0.001 ohm (1.0 milliohm), or
less.
SUBTASK 30-42-21-420-002
(6) Connect the electrical connector [6] to the wiper motor converter [1].
H. Wiper Motor/Converter Installation Test
SUBTASK 30-42-21-710-001
(1) Do these steps to make sure the wiper motor/converter operates:
(a) Do this task: Supply External Power, TASK 24-22-00-860-813.
(b) Remove the safety tags and close these circuit breakers:
CAPT Electrical System Panel, P18-3
Row Col Number Name
B 1 C00055 ANTI-ICE & RAIN WSHLD WIPER RIGHT
B 3 C00054 ANTI-ICE & RAIN WSHLD WIPER LEFT
(c) Set the windshield wiper switch to LOW.
(d) Make sure the wiper motor/converter operates.
(e) Turn the windshield wiper switch to PARK.
SUBTASK 30-42-21-410-002
(2) Re-install the P1-3 panel for Captain side and P3-1 panel for F/O side.
SUBTASK 30-42-21-410-001
(3) Re-install the display unit (TASK 31-62-11-400-801).
SUBTASK 30-42-21-390-001
(4) Apply sealant, A00247, to the wiper motor shaft.
(a) Make sure the area around the wiper motor shaft is clean (TASK 51-31-00-160-801).
(b) Use a sealant gun, STD-7413, to fill the gap between the wiper motor shaft and the
airplane skin with sealant, A00247.
(c) Use a hardwood or plastic fillet smoothing spatula, STD-810, to make a smooth surface
on the sealant.
(d) Remove all excess sealant with clean cotton wiper, G00034, that is wet with Series 92
solvent, B01012 (TASK 20-30-92-910-801).
SUBTASK 30-42-21-420-003
(5) Re-install the windshield wiper arm (TASK 30-42-31-400-801).
I. Put the Airplane Back to its Usual Condition
SUBTASK 30-42-21-860-004
(1) Remove the safety tags and close these circuit breakers:
CAPT Electrical System Panel, P18-3
Row Col Number Name
C 1 C00523 HEATERS CAPT PITOT
D 1 C00226 WINDOW HEAT CONTROL RIGHT FRONT AC
D 2 C00225 WINDOW HEAT CONTROL LEFT SIDE AC
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-42-21
Page 410
D633A101-ILF Jun 15/2018
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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