TM 5-4310-343-35
show no signs of distortion or permanent set, and must provide a load of 1 LB, 7 OZ on the brushes.
(6) FAN (18). Must fit firmly on shaft of armature (42). Must show no signs of misalignment.
(7) FAN (47). Must be securely fastened to hub (48). Hub must fit firmly on the shaft of armature
(42).
(8) GEARSHAFT (60, and 62). Must show no signs of wear on teeth, and splines.
(g) Repair or Replacement.
(1) ALL PARTS. Replace any part .which does not meet the requirements outlined in paragraph 5-
8.f.(1) (f), or which fails to function as required by tests outlined in paragraph 5-12.f.(2).
(2) ARMATURE. If necessary, turn down the commutator diameter 1/32 inch with a very light lathe
cut. Undercut the segment insulators 1/32 inch.
Dress with No. 0000 sandpaper. After turning, the face must be concentric with the shaft to within 0.001 Inch total
Indicator reading. Dynamically balance the armature after its fan and ball bearings have been installed.
(3) Re-cement Insulation strip in the cap with adhesive such as commercial "Stabond C111",
manufactured by American Latex Products, Hawthorne, California (no known Government specification) or equivalent.
5-18
