1. Part Number Update Bulletin No PNU 004 Effective Date 12 15 95 Cancels N A Page 1 of 1 Subject PART NUMBERS TO BE OBSOLETED The following part numbers will be obsoleted on July 1 1996 PART NUMBER DESCRIPTION 276461 Spring Brake Actuators SB 1 276746 Spring Brake Actuators SB 1 287018 Spring Brake Actuators SB 1 104611 SD 3 Roto Safety Actuator 289297 SD 3 Roto Safety Actuator 289651 SD 3 Roto Safety Actuator