BOLT 8Y4139 - Caterpillar

Engine3516B (S/N: TRE1-UP)Gas EngineG3508B (S/N: RBK1-UP)G3512 (S/N: GNS1-UP)G3512B (S/N: JHH1-UP)G3516 (S/N: 4EK1-UP; WPS1-UP; WPW1-UP)G3516B (S/N: JEF1-UP)G3612 (S/N: BKE1-UP)G3616 (S/N: BLB1-UP)Gen Set Engine3508C PETROLEUM (S/N: LLC1-UP)3512 (S/N: 24Z1-UP; 67Z1-UP)3512B (S/N: 4AW1-UP)3516 (S/N: 5SJ1-UP; 25Z1-UP; 73Z1-UP)3516B (S/N: 1NW1-UP)Generator Set3512B (S/N: 6GW1-UP)3512B GENSET (S/N: ZAH1-UP)3516 (S/N: ZAL1-UP; YAS1-UP)3516B (S/N: PBR1-UP; ZAR1-UP; GZS1-UP; GZT1-UP; YAT1-UP; YAW1-UP; GZY1-UP)3516C (S/N: SBJ1-UP; SCK1-UP)3516C GEN SET (S/N: SBK1-UP)G3508 (S/N: CPS1-UP)G3516 (S/N: ZBA1-UP; ZAZ1-UP)G3516B (S/N: ZBB1-UP)G3516C (S/N: GSB1-UP; GZC1-UP; GZZ1-UP)G3516E (S/N: GAS1-UP)G3520C (S/N: GZA1-UP; GZB1-UP; GZJ1-UP; GZL1-UP; GZM1-UP; GZN1-UP; RLP1-UP; LGS1-UP)G3520E (S/N: GZE1-UP; GZH1-UP)Industrial Engine3508 (S/N: 95Y1-UP; 68Z1-UP)3508B (S/N: CBB1-UP; BTR1-UP; BPX1-UP)3508C PETROLEUM (S/N: LLE1-UP)3512 (S/N: 49Y1-UP; 65Z1-UP)3512B (S/N: 2AF1-UP; SDW1-UP)3512C (S/N: LLA1-UP)3512C PETROLEUM (S/N: R1A1-UP)3516 (S/N: 27Z1-UP; 71Z1-UP)3516B (S/N: KDK1-UP; MSK1-UP; KNS1-UP; 7DS1-UP; MSX1-UP)3524B (S/N: NPM1-UP)G3520B (S/N: GLF1-UP)Locomotive Engine3508B (S/N: 5PS1-UP)Marine Auxillary Engine3508B (S/N: S2A1-UP; S2B1-UP)3512B (S/N: S2H1-UP)3516C (S/N: JTS1-UP; TKX1-UP)Marine Engine3508 (S/N: 96Y1-UP; 69Z1-UP)3508B (S/N: S2D1-UP; S2E1-UP)3508C (S/N: TTA1-UP; TTB1-UP)3512 (S/N: 50Y1-UP; 66Z1-UP)3512B (S/N: S2J1-UP; S2K1-UP; S2L1-UP)3512C (S/N: TTC1-UP; TTE1-UP; TTF1-UP; TTG1-UP; MKH1-UP; T3P1-UP; T3S1-UP; T3W1-UP)3516 (S/N: 29Z1-UP; 72Z1-UP)3516B (S/N: S2S1-UP; S2T1-UP; S2W1-UP)3516C (S/N: TTD1-UP; TTH1-UP; TKR1-UP; TKS1-UP; TKT1-UP; TKY1-UP)Petroleum Engine3512B PETROLEUM (S/N: MHA1-UP)3512C (S/N: LLK1-UP; R1T1-UP)3512C PETROLEUM (S/N: R1S1-UP)Vehicular Engine3512 (S/N: 51Y1-UP)Description Of Change: Note: Disregard the previous article. Removed prefix MLM from this article.The new alternator belt guard is more robust and also incorporates slots for visual and frequency inspection of the belts.Adaptable To: The new guards do not have the captive fastener design.The new guards are adaptable to the engines that are listed above back to first production.The new parts and the former parts are listed in Table 1. The former parts are canceled.
Table 1
Qty New Part Former Part
1 388-3410 Alternator Guard As 288-6174 Alternator Guard As The effective date for the alternator belt guard is 14 February 2013.