HEAD 1M1577 - Caterpillar

Power Generation3516C GEN SET (S/N: SBK1-UP)Engine3516B (S/N: CPA1-UP; CDE1-UP; B5G1-UP; BPJ1-UP; EDJ1-UP; BCK1-UP; TAK1-UP; CAN1-UP; CBN1-UP; JCN1-UP; GAR1-UP; PBR1-UP; YAR1-UP; ZAR1-UP; ZBR1-UP; 7DS1-UP; GZT1-UP; S2T1-UP; CPW1-UP; YAW1-UP; YBW1-UP; 2JW1-UP; 4BW1-UP; FDX1-UP; S2X1-UP; S2Z1-UP)3516C (S/N: GS21-UP; PRC1-UP; SKC1-UP; DPD1-UP; TRD1-UP; MLF1-UP; PAG1-UP; TKG1-UP; PXH1-UP; TTH1-UP; PXJ1-UP; SCJ1-UP; TTJ1-UP; EDK1-UP; SCK1-UP; SEK1-UP; SFK1-UP; SBM1-UP; TKR1-UP; JTS1-UP; TKS1-UP; WFS1-UP; MXT1-UP; TKT1-UP; WFT1-UP; SDX1-UP; TKX1-UP; EDY1-UP; TKY1-UP; TTY1-UP)G3516E (S/N: GAS1-UP)G3516H (S/N: NWH1-UP; NWJ1-UP; GLM1-UP; GLN1-UP)Generator Set3516E (S/N: MR91-UP; MRC1-UP; MRN1-UP; MRY1-UP)CG170-16 (S/N: KSJ1-UP)Petroleum Engine3516C PETROLEUM (S/N: PES1-UP)Power ModulePM3516 (S/N: BPD1-UP)XQC1600 (S/N: N1M1-UP)Description Of Change: The new 3516HD crankshaft assemblies use a counterweight with unmachined cheek that is already in production in 3516 and 3512 standard stroke crankshafts. This counterweight will be used in the first 15 positions.Adaptable To: The following changes are adaptable to the products within the listed serial numbers. This change is effective on or after 31 May 2016.New part numbers 506-1982 Crankshaft replaces 448-8942 Crankshaft for 3516B/C HD engines, and 506-1983 Crankshaft replaces 448-8943 Crankshaft for 3516E engines.The 188-0477 Counterweight replaces the 151-5944 Counterweight with machined cheek in these applications.The 448-8941 Counterweight (crew cut) is still used in the 16th position.The 448-8942 Crankshaft Assemblies and 448-8943 Crankshaft Assemblies have been canceled.