C9 Marine Engines and C9 Marine Generator Sets Caterpillar


Alternator and Regulator

Usage:

C9 C9A



Illustration 1g02567718

Note: Load the battery with a carbon pile 4C-4911 Battery Load Tester in order to get the maximum alternator output.

Table 1
Specification for 266-7226 Charging Alternator Gp    
Item     Qty     Part     Specification Description    
1     -     -     Use a 7/16 ring terminal for (B+) terminal.    
(B+) terminal. Torque nut to
6.2 ± 0.6 N·m (54.9 ± 5.3 lb in).
2     -     -     (R) terminal is the AC tap from the stator.    
3     1     4B-2047 Nut     (D+) terminal. Torque to
2.25 ± 0.25 N·m (19.91 ± 2.21 lb in).    
4     1     3T-6354 Voltage Regulator As     Voltage setting requires no adjustment.
Permissible voltage range is 27 to 29 V.    
5     1     187-2034 Flange Nut     Torque to
102 ± 7 N·m (75 ± 5 lb ft).    
-     -     -     Voltage is 24 V.    
-     -     -     Amperage is 75 Amp.    
-     -     -     Polarity is insulated ground.    
-     -     -     Rotation is both clockwise and counterclockwise.    
-     -     -     Minimum full load current at 5000 rpm is 81 Amp.    
-     -     -     Minimum full load current at 2000 rpm is 40 Amp.    
-     -     -     Maximum turn on speed is 2000 rpm.    
-     -     -     Output voltage is 28 ± 1 V.    

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