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Page Title: ARMATURE AND FIELD TUBE ASSEMBLY - lNSPECT/REPLACE (Cont)
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TM    55-2915-335-30&P 2-18.  ARMATURE  AND  FIELD  TUBE  ASSEMBLY  -  lNSPECT/REPLACE  (Cont) 2-18 k.    TI INSPECT. Visually inspect that brush leads are positioned in holders properly. Check that springs are rest- ing in brush and holder slots and brushes are positioned against commutator. Make sure that impeller turns armature and that both thrust washers are in place. 6. INSTALL FIELD TUBE ASSEMBLY a. b. c. d. e. f. Keep armature seated when installing field tube. Allowing armature to slide out of brush housing may cause permanent damage to brushes. Find the paint mark on the end of one magnet. This is the “north” field magnet. Position field tube (3) so that paint mark is up when field tube is installed on impeller housing (4) and the north magnet is over the positive brush. Positive brush (6) is on same side of housing as impeller   opening. Insert long shaft phillips head screwdriver through center of field tube (3). Place  tip  of  long  shaft  phillips  head  screwdriver  (1) into hole on end of armature (2) shaft. Position field tube (3) so that mounting studs (12) will slide between field magnets. While holding down on armature (2) with phillips screwdriver (1), slide field tube (3) down over armature onto impeller housing (4). Do not release pressure on armature until field tube (3) is fully positioned on impeller housing (4). g.  Rotate field tube (3) clockwise. Magnets must rest against mounting studs (12) for proper motor operation. If using field tube removed previously, check field tube (3) to housing (4) matchmarks. They should be lined up. If they are on opposite sides, double check the assembly before proceeding. NOTE FOLLOW-ON  MAINTENANCE:  Install  cover-end  brush  holder assembly  (paragraph  2-17). END OF TASK 2-63

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