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EXCITER-AUXILIARY GENERATOR ASSEMBLY (cont) - TM-55-2210-223-34_149
EXCITER-AUXILIARY GENERATOR ASSEMBLY (cont) - TM-55-2210-223-34_151

TM-55-2210-223-34 Locomotive Diesel-Electric 06-1/2-Inch Gage 60 Ton 000HP 0-4-4-0 Wheel Model RS-4-TC-1A NSN 2210-01-158-2978 Manual
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TM 55-2210-223-34 TO 45A2-2-14-22 3-35.  EXCITER-AUXILIARY GENERATOR ASSEMBLY (cont) TEST (cont) 29.  Perform the bar-to-bar resistance test by the following: a. Place lead (1) of multimeter (2) on the shaft or core of the armature. b. Place lead (3) of multimeter (2) on one of the commutator bars.  Record reading on multimeter.  Contact each successive bar around the commutator and record each reading. c. If  the  test  indicates  resistance  readings  of  10  percent  or  more  above  the  average  recorded  readings  on  20  or more connections, tig weld all.  coil leads to commutator neck convections.  If test indicates resistance readings of 1/2 percent below the average or a full-scale meter deflection of the multimeter, there is a shorted coil to the armature. d. Below average readings could indicate the presence of water in the coils. If below average readings are obtained bake armature in a convection oven for 4 hours at 230°  (110°C). e. Cool at room temperature and repeat step (b). f. If readings are still low, replace armature. ASSEMBLY 30. Install cooling fan (54), eight lockwashers (53), and bolts (52) on armature (55). 31. Install armature (55) in auxiliary frame (51). 32. Install exciter frame (50) on armature (55) and secure wih eight lockwashers (49) and bolts (48). 33. Fill inner bearing housing (47) and bearing assembly (44) with grease. 34. Install inner bearing housing (47) and gasket (46). 3-130







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