3500B and 3500C Marine Engines Alternator and Regulator Caterpillar


Alternator and Regulator
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Illustration 1g03791636

Table 1
Specification for 333-1184 Charging Alternator Gp 
Item  Qty  Part  Specification Description 
Load the battery with a carbon pile 4C-4911 Battery Load Tester in order to get the maximum alternator output. 
187-2034 Flange Nut  Torque to 102 ± 7 N·m (75 ± 5 lb ft)
Final installation torque is 88 ± 7 N·m (65 ± 5 lb ft)
4B-2047 Nut  Torque to 2.25 ± 0.25 N·m (20.00 ± 2.00 lb in) 
6V-8187 Nut  (B-) terminal. Torque to 6.75 ± 1.50 N·m (59.74 ± 13.28 lb in)
6V-8187 Nut  Use a 7/16 ring terminal for (B+) terminal.
(B+) terminal. Torque to 6.75 ± 1.50 N·m (59.74 ± 13.28 lb in)
3T-6354 Voltage Regulator As  Voltage setting is not adjustable. 
Permissible voltage range is 27 to 29 V.
Voltage is 24 V. 
Amperage is 60 amp. 
Polarity is negative ground. 
Rotation is either direction. 
Maximum turn on speed is 2000 rpm. 
Alternator performance at 25 °C (77 °F) is:
Minimum full load current at 5000 rpm is 68 amp.
Minimum full load current at 2000 rpm is 42 amp.
Output voltage is 28 ± 1 V. 

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