Figure 8-1. Generator Exploded View (Sheet 2 of 2)

Figure 8-1. Generator Exploded View (Sheet 1 of 2)

TM-5-6115-584-34 Generator Set Diesel Engine Driven Tactical Skid Mtd. 30 Kw 3 Phase 4 Wire 120/208 and 240/416 Volts Manual
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T M 5 - 6 1 1 5 - 5 8 4 - 34 NAVFAC P-8-622-34 T O - 3 5 C 2 - 3 - 4 5 6 -2 TM-0568C-34 Figure 8-1. Generator Exploded View (Sheet 2 of 2) c. Disassembly (see figure 8-l). (1) Remove screws (l), nut (2), lockwasher (3), attaching screen (4) to generator and remove screen. (2) Remove screws (5), lockwashers (8), attaching end bell cover (7) to end bell and remove cover. (3) Remove screws (8) and lockwashers (9) hold- ing bearing retainer (33) to the end bell (16). Remove screws (10) and Iockwashers (11) attaching end bell assembly (16) to stator assembly and remove end bell assembly. (4) Remove "O" ring (12) from bearing housing. Remove and tag wiring harness from terminal board (20). Remove screws (19) and nuts (18) attaching ter- mtnal board to exciter stator and remove terminal board. (5) Remove four screws (14) and lockwasher (15) attaching exciter stator (17) to end bell (16) and re- move exciter stator. (6) Remove eight screws (24) attaching coupling disk (37) to rotor shaft and remove coupling, lock plate (25) and retaining ring (26). (7) Remove generator fan (28) which is now free. Do not remove balance screw from fan (28). (8) Remove rotor assembly from stator assembly (53). (9) Remove screw (29), lockwasher (30) and flat- washer (31) attaching bearing (32) to rotor shaft and remove bearing, bearing retainer (33) and shaft collar (34). (10) If necessary, remove diodes from rotor as given in paragraph 8-2a above. D o n o t r e m o v e e x c i t e r r o t o r f r o m r o t o r s h a f t u n l e s s t e s t r e s u l t s i n d i c a t e n e e d f o r r e p l a c e m e n t. d. Inspect. Visually inspect windings and lead con- nections. Check that diodes are securely mounted on heat sinks. Clean dust, dirt, and grease from diodes. Clean windings and drain holes. Check that end bear- ing is not damaged or worn. Inspect cooling fan and coupling for damage. e. Testing Exciter Stator (Field) (High Potential T e s t ) . - Observe safety regulations. The voltages used in this test are dangerous to human life. Con- tact with the leads or the windings under test may cause severe, and possibly fatal, shock. Arrange the high voltage leads so that they are not in a position to be accidentally touched. Keep clear of all energized parts. Always re- duce the test voltage to zero and ground the winding under test before making any mechan- ical or electrical adjustments on the equip- ment. When grounding out windings which have been tested, always connect the connection wire to ground first, and then to the winding. Never perform this test without at least one other person assisting. Generator frame shall be securely grounded. (1) General. The high potential test is performed to determine whether or not the insulation of the equipment under test is defective. It is customary to determine whether electrical equipment will withstand normal voltage stresses by means of a test in which higher voltages than normal are applied for a definite Change 5 8-3

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