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COOLINGAIR GENERATOR REPAIR, J-SERIES r’ FIGURE 37. GENERATOR AIR OUTLET DISASSEMBLY 1. Disconnect battery to prevent accidental starting of engine. 2. Remove end bell cover to reveal rotor-through- stud nut. 3. Remove B1 lead from tapped adjustable resistor in generator air outlet opening, Figure 37. 4. Remove leads from control box to ignition sys- tem, choke, start disconnect switch, etc., on engine. 5. Remove stator-through-stud nuts, end bell, and ADAPTER stator assembly, Figure 38. Screwdriver slots in adapter provide a means for prying stator loose. Be careful not to let statortouch or drag on rotor. 6. Remove air baffle from adapter. Turn rotor- through-stud nut to end of stud. While pulling rotor outward with one hand, strike nut a sharp blow. Support rotor with hoist and sling to avoid bending rotor-through-stud, Figure 39. Use a heavy, soft faced hammer to loosen the rotor from its tapered shaft fit. If rotor does not come loose, strike it asharp downward blow in center of lami- nation stack. Rotate rotor and repeat until it comes loose. Be careful not to hit bearing or windings. 7. After disassembly, all .parts should be wiped clean and visually inspected. SUPPORT ROTOR WITH HOIST AND SLING TO AVOID BENDING THROUGH STUD INSERT PRY BEHIND BLOWER WHEEL THROUGH AIR OUTLET OPENING TURNNUTOUTTO END OF GENERATOR THROUGHBTUD STRIKE WITH SOFT HAWER WHILE PRYING. =. ~ BRUSHLESS EXCITER FIGURE 38. GENERATOR DISASSEMBLY 35 FIGURE 39. ROTOR REMOVAL STATOR I d ,
ASSEMBLY 9. Torque down rotor-through-stud nut 55-60 ft. Ib 1. 2. 3. 4. 5. 6. 7. 8. Clean and inspect all mating surfaces. Coat mating area between generator bearing and end bell bearing hole with a thin film of Molykote or equal. Install rotor-through-stud in engine crankshaft. Install key in the crankshaft. Slide rotor over through-stud and onto crankshaft. Be careful not to let weight of rotor rest on or bend the through-stud. Install baffle ring. tnstall stator through-studs in adapter. Install stator and end bell. Torque nuts on through-studs to 19 to 21 ft-lbs (26 to 28 Nom). MakeartalntheBl kadlsplsccdthroughthegrommetinthe bffk ring and out the air dirchargf! openlng in the adrptcr. 36 (75-81 Nom). The rotor and stator are automati- cally aligned because stator and bearing support were tightened in step 8. 10. Tap end bell to align at horizontal and vertical plane; use a lead hammer to relieve stresses on components (recheck torque). 11. Reconnect leads to preheater, centrifugal switch and governor solenoid. 12. Install lead B1 on adjustable resistor, R21. Check B1 lead to see that it is short and is kept away lrom the blower. If near- rery when Installing a new stator or leads, cut B1 lead shorler and reinstail the connector. 13. Install end bell cover. . . .
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Caution: This document contains mix
Page 3 and 4: The following symbols in this manua
Page 5 and 6: FLOW CHART A. NO AC OUTPUT VOLTAGE
Page 7 and 8: STMT Check exciter stator winding p
Page 9 and 10: -1 Contact with high voltage can ca
Page 11 and 12: The preferred test is with a megger
Page 13 and 14: are given in Table 1 (lead length b
Page 15 and 16: L - Wiring Harness Check Stop engin
Page 17: T I I I I I I I - I I I I I I I I I
Page 21 and 22: GENERAL This manual contains troubl
Page 23 and 24: generator adapter. The brushless ex
Page 25 and 26: Is control panel field breaker CB21
Page 27 and 28: FLOW CHART D. AC OUTPUT VOLTAGE BUI
Page 29 and 30: GENERAL All of the following Adjust
Page 31 and 32: . FIGURE 6. MSHlNGTHEFiELD voltage
Page 33 and 34: MULTIMETER FIGURE 11. SCR VOLTAGE T
Page 35 and 36: TABLE 2 RESISTANCE VALUES FOR ROTOR
Page 37 and 38: VOLTAGE REGULATOR The line-voltage
Page 39 and 40: VI v2 v3 v4 - VI v2 v4 VI v2 \R v4
Page 41 and 42: START Is control panel field breake
Page 43 and 44: . FLOW CHART D. EXCITER FIELD BREAK
Page 45 and 46: GENERAL All of the following Adjust
Page 47 and 48: The winding schematic (Figure 25) s
Page 49 and 50: CONTACT ONE PROD TO EACE OF M E FIE
Page 51 and 52: [a1 RECONNECTION WIRE W12 Figure 36
Page 53: 1201240 VOLT, 1 PHASE, 60 HERTZ NAM
Page 57 and 58: . Starting Watts ..................
Page 59 and 60: WIRING CONNECTIONS, 15-25 kW SINGLE
Page 61 and 62: PERIODIC SERVICE AND INSPECTION SER
Page 63 and 64: I I I I CYRZI-2 I 7821-1 I - I t I
Page 65 and 66: NOTE: For detailed troubleshooting
Page 67 and 68: 3. Removesix5/16x l-inch capscrewsa
Page 69 and 70: 4. Remove end bell by tapping upwar
Page 71 and 72: 9. Remove rotor and fan .by using a
Page 73 and 74: 14. If bearing, shaft, or oil seal
Page 75 and 76: AC .AMMETERS WATER TEMPERATURE GAU
Page 77 and 78: ENGINE CONTROL SYST.EM OPERATION De
Page 79 and 80: Umlt cranking 15 to 20reconds to co
Page 81 and 82: RADIATOR-COOLED DIESEL SETS The con
Page 83 and 84: Start-Disconnect Sequence When cran
Page 85 and 86: a a W a 9 W z f 66 6 b w a 3 0 E
Page 87 and 88: START Does fuel transfer pump El an
Page 89 and 90: CONTROL COMPONENT CHECKOUT The foll
Page 91 and 92: WIRING DIAGRAMS The wiring and sche
Page 93 and 94: I I I L I I m 74
Page 95 and 96: I 1 ' t I I U
Page 97: IW I- CE o_ u) z I It I 3 w
Page 100 and 101: I I I I I I I I 3 $1 :I a 1 I I tl
Page 102 and 103: P 83
Page 104 and 105:
- --1 I" .- I . I - 1 85
Page 106 and 107:
87 ~ " - .I \ e 6 a i- z 0 0 a E a
Page 108 and 109:
I I I I I I I I I 7 6 Et 4 3 2 I RE
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Onan Corporation 1400 73rd Avenue N
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Caution: This document contains mixed page sizes ... - Igor Chudov

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