26SI Series Alternator – Alternator



Illustration 1 g00862388

(1) Output terminal nut

(2) Pulley nut

Table 1
Specifications    
Alternator     7N-9720     9G-9538 100-5046    
Voltage rating     28V    
Polarity     Negative ground    
Speed for testing     4000 rpm     5000 rpm    
Rotation     Either direction    
Output (cold) (1)     47A     63A    
Output rating at operating temperature     37A     50A    
The field current at 28 V and 25 °C (77°F)     1.8A     2.5A    
(2 ) Torque rating for the pulley nut     97.5 ± 2.5 N·m (72 ± 2 lb ft)    
(1) Torque rating for the output terminal nut     8.5 ± 1.5 N·m (6 ± 1 lb ft)    
Voltage regulator (2)     9G-7567    
Voltage range     28 ± 1 V    
( 1 ) Fasten the carbon pile across the battery in order to get the maximum output.
( 2 ) nonadjustable
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