3512C Engine for 785D Off-Highway Truck/Tractors Caterpillar


Alternator and Regulator

Usage:

3512C B7F



Illustration 1g03357069

Table 1
Specification for 316-7251 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.    
1     1     5S-7349 Bolt     (B-) terminal. Torque to 6.2 ± 0.6 N·m (54.9 ± 5.3 lb in).    
2     1     187-2034 Flange Nut     Torque to
102 ± 7 N·m (75 ± 5 lb ft).    
3     1     6V-8187 Nut     Use a 7/16 ring terminal for (B+) terminal.
(B+) terminal. Torque to
6.2 ± 0.6 N·m (54.9 ± 5.3 lb in).    
4     -     -     The peak voltage for (R) terminal must not be less than the output voltage for (B+) terminal.    
5     -     -     Tighten the bolt to
88 ± 7 N·m (65 ± 5 lb ft).    
6     1     4B-2047 Nut     (D+) terminal. Torque to
2.25 ± 0.25 N·m (19.91 ± 2.21 lb in).    
-     -     -     Voltage is 24 V.
Amperage is 105 amp.
Polarity is negative ground.
Direction of rotation is either direction.    
-     -     -     Alternator performance at
25 °C (77 °F):

Minimum full load current at 5000 rpm is 105 amp.
Minimum full load current at 2000 rpm is 39 amp.
Output voltage is 28 ± 1 V.    

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