FRAME 7M3843 - Caterpillar

Articulated Truck:
735B (S/N: T4P1-UP)
740B (S/N: T4R1-UP; E4S1-UP)
740B EJECTOR (S/N: T4S1-UP)
Excavator:
336E (S/N: RZA1-UP; KED1-UP; YCE1-UP; TEG1-UP; FJH1-UP; GTJ1-UP; YEP1-UP; CMR1-UP; BZY1-UP; TMZ1-UP)
349E (S/N: DGE1-UP; SPG1-UP; TFG1-UP; RGH1-UP; KCN1-UP; MZW1-UP; KFX1-UP; MPZ1-UP; WHZ1-UP)
568 (S/N: BRB1-UP; YJX1-UP)
Motor Grader:
12MSeries 2 (S/N: F9B1-UP; F9M1-UP; R9P1-UP; R9S1-UP)
140MSeries 2 (S/N: M9D1-UP; R9G1-UP; M9J1-UP; R9M1-UP)
160MSeries 2 (S/N: M9E1-UP; M9K1-UP; R9L1-UP; R9T1-UP)
Mobile Hydraulic Power Unit:
336E MHPU (S/N: DSZ1-UP; T3Z1-UP)
349E MHPU (S/N: S3P1-UP)
Track-Type Tractor:
D6T (S/N: KSB1-UP; ZJB1-UP; DTD1-UP; EJJ1-UP; SLJ1-UP; GMK1-UP; RRK1-UP; TSM1-UP; WLM1-UP; PLR1-UP; JRW1-UP; RCW1-UP)
D7E (S/N: TJA1-UP; TAN1-UP)
D8T (S/N: MLN1-UP; FCT1-UP)
Wheel Loader:
966K (S/N: PBG1-UP; TFS1-UP; NGX1-UP)
972K (S/N: PEM1-UP; Z4W1-UP)
980K (S/N: W7K1-UP; GTZ1-UP)
Wheel Tractor-Scraper:
621H (S/N: DBK1-UP; HKK1-UP)
623H (S/N: DBF1-UP)
627H (S/N: DBW1-UP)
Description of Change: Refer to Special Instruction, REHS7929, "New Engine Software Is Now Used on Certain Tier 4 Interim C9.3 Through C15 Machine Engines".New engine software has been developed to address issues found during earlier PROD version software field testing. Updates include improvements to regeneration performance, engine, and aftertreatment diagnostics.Adaptable To: The new software is direct replacement for the previous software.and is adaptable back to the first production of the listed machines.