Tech Bulletin (TSB-1041, US) - replacement of older style regulators with 105-396 (8RL3024)

The redesign of the 105-351 (8RL3021) and 105-352 (8RL3022) was done to incorporate a sealed regulator housing to improve the reliability of the regulator. This redesign also allowed us to integrate the enhancements listed below, along with offering a common regulator for multiple alternators.

  • The adjustment potentiometer was removed to eliminate the possibility of improper adjustments by the user.
  • the new 105-396 (8RL3024) regulator is compatible with both the 3 wire 105-351 and the 4 wire 105-352.

The attached technical bulletin provides wiring details on how to replace the old style regulators with the new one.

tsb1041 regulator wiring

The information contained in this bulletin is intended for professional technicians who have the proper tools, equipment, and training to perform the maintenance described. This information is NOT intended for ‘do-it-yourselfers’, and you should not assume that this information applies to your equipment. If you have any questions regarding this information please contact our customer service department at:
Leece-Neville Heavy Duty Systems
a division of Prestolite Electric Inc
7585 Empire Drive
Florence, KY USA 41042
(800) 354-0560
(859) 525-8801

Attachment description:

  • TSB-1041 - Replacement of regulators 8RL3021, 8RL3022 with 8RL3024
TSB-1041_regulator_field_service.pdf192.2 KB