TM 9-4940-556-14&P
Nuts, bolts, set screws.
4.5.3
4.5.3.1 With unit disconnected from electrical power, check all visible
nuts and bolts to be certain none are loose.
4.5.3.2 With allen wrench, check set screws on pump pulley, Jack Shaft
pulley, fan hub and pillow block bearings. Pillow block bearings have
2 set screws. Tighten as necessary.
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