Improved Fuel Transfer Pumps Are Used on Certain 3500 Commercial Engines {1256} Caterpillar

Improved Fuel Transfer Pumps Are Used on Certain 3500 Commercial Engines {1256}

Usage:

3512B 2AF

Electric Power Generation: 3512 GEN SET (S/N: ZAF1-809); 3512B GENSET (S/N: ZAH1-92011); 3516B GEN SET (S/N: ZAP1-1624)
Engine: 3508 (S/N: ZAB1-166; 95Y1-82001; 68Z1-1407); 3508B (S/N: CBB1-600; CNB1-1767; S2B1-857; S2D1-274; ZAD1-92016; S2F1-125; DPN1-127; 5PS1-855); 3508C (S/N: TTA1-277; TTB1-603); 3512 (S/N: PTH1-965; CMJ1-92003; YAK1-960; FDR1-344; 51Y1-897; 67Z1-83001); 3512B (S/N: LDF1-458; PTF1-92014; 2AF1-900; PWG1-230; S2G1-425; S2H1-711; S2J1-798; S2L1-994; PTM1-92004; S2M1-202; YAM1-997; 8RM1-1148; YAN1-92004; 4DR1-23; 3ZW1-1228; 4AW1-81002; 6GW1-1859; YAY1-92002; YAZ1-797); 3512C (S/N: WF31-589; WF51-906; LLA1-5208; YBD1-444; TTF1-664; SBG1-1384; TTG1-408; LLK1-144; MLM1-281; SLM1-722; T3P1-329; TKP1-231; T3R1-342; RMS1-339; T3S1-227; LLT1-107; R1T1-126; E3W1-412; F2X1-372; E3Y1-455); 3516 (S/N: ZAL1-493; GZR1-279; YAS1-555; YBS1-217); 3516B (S/N: BCK1-426; S2P1-265; ZBP1-302; PBR1-687; S2R1-865; ZAR1-92035; GZS1-962; S2S1-494; YAT1-91008; YBT1-634; S2W1-150; YAW1-418; YBW1-260; 8NW1-91001; S2X1-1699; GZY1-142; S2Y1-118; S2Z1-440); 3516C (S/N: GS21-194; TTD1-429; TTH1-1094; SFJ1-933)
Petroleum Engine: 3508C PETROLEUM (S/N: LLC1-236); 3512B PETROLEUM (S/N: MHA1-161); 3512C PETROLEUM (S/N: R1A1-1967; LLB1-164; R1S1-1608); 3516C PETROLEUM (S/N: PES1-1312)
Power Module: PM3512 (S/N: TC81-279); PM3516 (S/N: NAM1-399; KEN1-232; NBR1-947)

Description Of Change: The improved fuel transfer pumps prevent fuel and engine oil from leaking out of the weep hole during the paint cure process.

Adaptable To: The following changes are adaptable to the products within the listed serial numbers, and are effective with all products after the listed serial numbers.

The improvement has been made to the following fuel transfer pumps:

313-7770 Fuel Transfer Pump Gp
322-3830 Fuel Transfer Pump Gp
322-6264 Fuel Transfer Pump Gp

Install a new 1H-9696 O-Ring Seal onto the fuel transfer pump before installation.

The new fuel transfer pumps are adaptable to the above engines back to first production.

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