Alternator
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Illustration 1 | g00901139 |
27-SI End View |
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27-SI Alternators     | ||
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Part Number     | Nominal Voltage     | Nominal Current     |
9L-5938 Alternator Gp     | 12 V     | 58 A     |
3T-7070 Alternator Gp     | 12 V     | 58 A     |
9W-1082 Alternator Gp     | 12V     | 83 A     |
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Specifications for 27-SI Alternators (1)     | |||
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CAT Part Number     | 9L5938     | 3T7070     | 9W1082     |
Torque of Pulley Nut (4)     | 100 ± 7 N·m (75 ± 5 lb ft)     | 100 ± 7 N·m (75 ± 5 lb ft)     |
100 ± 7 N·m (75 ± 5 lb ft)     |
Torque of Four Through Bolts (3)     | 6.2 ± 0.6 N·m (5.5 ± 5 lb in)     |
6.2 ± 0.6 N·m (5.5 ± 5 lb in)     |
6.2 ± 0.6 N·m (5.5 ± 5 lb in)     |
Torque of "B+" Terminal (Nut) (1)     | 7.1 ± 0.9 N·m (63 ± 8.0 lb in)     |
7.1 ± 0.9 N·m (63 ± 8.0 lb in)     |
7.1 ± 0.9 N·m (63 ± 8.0 lb in)     |
Torque of "B-" Terminal (Bolt) (2)     | 2.3 ± 0.6 N·m (20 ± 5 lb in)     |
2.3 ± 0.6 N·m (20 ± 5 lb in)     |
2.3 ± 0.6 N·m (20 ± 5 lb in)     |
Voltage Rating     | 12 V     | 12 V     | 12 V     |
Rated Output Current     | 58 A     | 58 A     | 83 A     |
Polarity     | Negative Ground     | Negative Ground     | Negative Ground     |
Rotation     | CW or CCW     | CW or CCW     | CW     |
Test Speed     | 5000 rpm     | 5000 rpm     | 7000 rpm     |
Rated Output Current at the Test Speed     | 37.0 A     | 47.8 A     | 61.1 A     |
Output Voltage at 25 °C (77 °F)     |
27.4 ± 0.6 V     | 27.4 ± 0.6 V     | 14.0 ± 0.3 V     |
Resistance of Rotor Field Winding at 27 °C (81 °F)     |
2.4 to 2.7 ê     | 2.4 to 2.7 ê     | 2.2 to 2.7 ê     |
Current of Rotor Field Winding at the Voltage Rating and 27 °C (81 °F)     |
3.3 to 3.8 A     | 2.5 to 2.8 A     | 5.7 to 7.1 A     |
Turn-On Speed at 25 °C (77 °F)     |
2000 rpm     | 2000 rpm     | 2000 rpm     |
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( 1 ) | Refer to Illustration 1. |
Caterpillar Information System:
G3520B Engines MID 036 - CID 1518 - FMI 04 Cylinder #18 Detonation Sensor short to ground
G3520B Engines MID 036 - CID 1518 - FMI 03 Cylinder #18 Detonation Sensor open/short to +batt
G3520B Engines MID 033 - CID 1517 - FMI 04 Cylinder #17 Detonation Sensor short to ground
G3520B Engines MID 033 - CID 1517 - FMI 03 Cylinder #17 Detonation Sensor open/short to +batt
G3520B Engines MID 036 - CID 1514 - FMI 04 Cylinder #14 Detonation Sensor short to ground
G3520B Engines MID 036 - CID 1514 - FMI 03 Cylinder #14 Detonation Sensor open/short to +batt
G3520B Engines MID 033 - CID 1513 - FMI 04 Cylinder #13 Detonation Sensor short to ground
G3520B Engines MID 033 - CID 1513 - FMI 03 Cylinder #13 Detonation Sensor open/short to +batt
G3520B Engines MID 036 - CID 1510 - FMI 04 Cylinder #10 Detonation Sensor short to ground
797B Off-Highway Truck Steering System Front Wheel - Align
G3520B Engines MID 036 - CID 1510 - FMI 03 Cylinder #10 Detonation Sensor open/short to +batt
G3520B Engines MID 033 - CID 1509 - FMI 04 Cylinder #9 Detonation Sensor short to ground
G3520B Engines MID 111 - CID 1539 - FMI 04 Cyl #9 Exhaust Port Temp Sensor short to ground
G3520B Engines MID 111 - CID 1547 - FMI 03 Cyl #17 Exhaust Port Temp Sensor short to +batt
G3520B Engines MID 111 - CID 1548 - FMI 03 Cyl #18 Exhaust Port Temp Sensor short to +batt
G3520B Engines MID 111 - CID 1549 - FMI 03 Cyl #19 Exhaust Port Temp Sensor short to +batt
G3520B Engines MID 111 - CID 1550 - FMI 03 Cyl #20 Exhaust Port Temp Sensor short to +batt
G3520B Engines MID 111 - CID 1547 - FMI 04 Cyl #17 Exhaust Port Temp Sensor short to ground
G3520B Engines MID 111 - CID 1548 - FMI 04 Cyl #18 Exhaust Port Temp Sensor short to ground
G3520B Engines MID 111 - CID 1549 - FMI 04 Cyl #19 Exhaust Port Temp Sensor short to ground
G3520B Engines MID 111 - CID 1550 - FMI 04 Cyl #20 Exhaust Port Temp Sensor short to ground
G3520B Engines MID 111 - CID 1547 - FMI 05 Cyl #17 Exhaust Port Temp Sensor open circuit
G3520B Engines MID 111 - CID 1548 - FMI 05 Cyl #18 Exhaust Port Temp Sensor open circuit
G3520B Engines MID 111 - CID 1549 - FMI 05 Cyl #19 Exhaust Port Temp Sensor open circuit