Usage:
4N3986 24V 60A (Delco-Remy Number 1117734)
NOTE: Load the battery with a carbon pile (6V4930 Battery Load Tester) to get the maximum alternator output.
Polarity ... Negative Ground
Rotation ... Either Direction
Speed for testing (rpm) ... 6500
Output voltage ... 27.5 ± 1.0V
Output (cold) ... 60A
(1) Torque for the pulley nut ... 102 ± 7 N·m (76 ± 5 lb ft)
(2) Torque for the output terminal nut ... 6.8 to 8.0 N·m (60 to 72 lb in)
3T6354 Regulator (Delco-Remy Number 1116405) Inside Alternator
Voltage setting ... No Adjustment
Permissible voltage range ... 26 to 30V
4N3987 32V 60A (Delco-Remy Number 1117733)
NOTE: Load the battery with a carbon pile (6V4930 Battery Load Tester) to get the maximum alternator output.
Polarity ... Negative Ground
Rotation ... Either Direction
Speed for testing (rpm) ... 6500
Output voltage ... 36.6 ± 1.3V
Output (cold) ... 60A
(1) Torque for the pulley nut ... 102 ± 7 N·m (76 ± 5 lb ft)
(2) Torque for the output terminal nut ... 6.8 to 8.0 N·m (60 to 72 lb in)
7T5665 Regulator (Delco-Remy Number 1987518) Inside Alternator
Voltage setting range ... 33 to 39V
Rated voltage ... 37.5V
(A) Adjust the voltage with the four-position cap.
Lo ... Low
2 ... Medium Low
3 ... Medium High
Hi ... High
High position is for 16 cell battery system (32V). For 15 cell battery system, pull out the four position cap and change to position 3 for 30V.
5L1243 32V 60A (Delco-Remy Number 1117074)
Polarity ... Negative Ground.
Rotation is clockwise when seen from drive end.
Output at 1800 rpm and 37.5V (cold) ... *20 A
Output at 2500 rpm and 37.5V (cold) ... *51 A
*5 to 10% higher with no regulator.
Rated output (hot) ... 60 A
Field current at 32V and 80°F (27°C) ... 2 to 2.7 A
(1) Torque for nut ... 70 to 80 N·m (50 to 60 lb ft)
(2) Tension of brush spring ... 2.8 N (10 oz.)