PLUG 6B2731 - Caterpillar

Engine: C15 (S/N: C5E1-UP; C5L1-UP) C18 (S/N: DKE1-UP) C175-16 (S/N: WYB1-UP) G3306 (S/N: JCA1-UP) G3406 (S/N: R7E1-UP; KAR1-UP) G3408 (S/N: 6RJ1-UP) G3412 (S/N: R7A1-UP; KAP1-UP) G3512C (S/N: GNX1-UP) G3512E (S/N: GTX1-UP; PBJ1-UP) G3516 (S/N: 4EK1-UP; ZBA1-UP) G3516B (S/N: CSC1-UP; ZBB1-UP) G3516E (S/N: SLY1-UP) G3520B (S/N: CWD1-UP) G3520C (S/N: CWW1-UP; CWY1-UP; GZJ1-UP; GZK1-UP; GZM1-UP; HAT1-UP; MAD1-UP; RLP1-UP) G3532 (S/N: 8BZ1-UP) 3306B (S/N: 1CZ1-UP; 8NS1-UP; B8D1-UP; LRW1-UP) 3412 (S/N: 1EZ1-UP; 3FZ1-UP; 4BZ1-UP) 3412C (S/N: 5FL1-UP; 9EP1-UP; BCW1-UP; DJN1-UP; LRY1-UP; RTY1-UP; TFT1-UP) 3508 (S/N: 1JZ1-UP; 5PW1-UP; 23Z1-UP; 70Z1-UP; CNF1-UP; CAW1-UP; ZAA1-UP; ZAB1-UP) 3508B (S/N: 1FZ1-UP; 3DM1-UP; 3DW1-UP; 5KW1-UP; S2A1-UP; S2B1-UP; BGX1-UP; CNB1-UP; ZAD1-UP) 3512 (S/N: 1KZ1-UP; 6WW1-UP; 24Z1-UP; 67Z1-UP; CMJ1-UP; FDR1-UP; ZAE1-UP; ZAF1-UP) 3512B (S/N: 1GZ1-UP; 1PW1-UP; 6GW1-UP; 8EM1-UP; S2G1-UP; S2H1-UP; BLF1-UP; BRK1-UP; CMC1-UP; FDE1-UP; ZAH1-UP; ZAJ1-UP) 3512C (S/N: LLB1-UP; SBG1-UP; SLM1-UP) 3516 (S/N: 1LZ1-UP; 4XF1-UP; 5SJ1-UP; 73Z1-UP; 8TW1-UP; CAL1-UP; CMD1-UP; ZAK1-UP; ZAL1-UP) 3516B (S/N: 1HZ1-UP; 2FW1-UP; 7RN1-UP; 8NW1-UP; 9AN1-UP; S2P1-UP; S2R1-UP; S2Z1-UP; BMB1-UP; BPJ1-UP; CDE1-UP; CPA1-UP; FDN1-UP; FDX1-UP; GAR1-UP; GZS1-UP; PBR1-UP; PPS1-UP; YAR1-UP; ZAP1-UP; ZAR1-UP) 3516C (S/N: KEN1-UP; PES1-UP; SBF1-UP; SBJ1-UP; SBK1-UP; SBM1-UP)Generator Set: 3406C GEN SET (S/N: 1DZ1-UP; 9ES1-UP; C2G1-UP; C5G1-UP; C8G1-UP; LRX1-UP; KPS1-UP) 3406C MARINE GS (S/N: PFH1-UP) 3456 GEN SET (S/N: C1G1-UP; C3G1-UP; C4G1-UP; CBX1-UP; CCB1-UP) 3516 GEN SET (S/N: 25Z1-UP) C15 GEN SET (S/N: C5H1-UP; CYY1-UP; PEC1-UP) C15 PET GS ENG (S/N: PET1-UP) C18 GEN SET (S/N: C6C1-UP; G4C1-UP; EKW1-UP; PEE1-UP; PEJ1-UP; STD1-UP; STM1-UP) C18 MARINE GS (S/N: MGS1-UP) C9 GEN SET (S/N: C9E1-UP) C9 MARINE GEN (S/N: SJB1-UP) C27 GEN SET (S/N: DWB1-UP) C32 GEN SET (S/N: SXC1-UP; WDR1-UP)Marine Engine: 3406C MARINE (S/N: 1SS1-UP)Electric Power Generation: SR4 (S/N: 1GD1-UP; 1MS1-UP; 2ED1-UP; 3EF1-UP; 3KJ1-UP; 4SJ1-UP; 5MA1-UP; 5NJ1-UP; 5RA1-UP; 5SA1-UP; 5TA1-UP; 5TD1-UP; 5UA1-UP; 5VA1-UP; 5YA1-UP; 5ZA1-UP; 6AA1-UP; 6CG1-UP; 6DG1-UP; 6EG1-UP; 6EJ1-UP; 6FA1-UP; 6LA1-UP; 6MA1-UP; 6NA1-UP; 6PA1-UP; 6SA1-UP; 6WA1-UP; 7AJ1-UP; 8FD1-UP; 8HG1-UP; 8JF1-UP; 8KF1-UP; 8LF1-UP; 8MM1-UP; 8ZD1-UP; 9EF1-UP; 9FF1-UP; 9FG1-UP) SR4 HV (S/N: 5HW1-UP; 5RW1-UP; 6CW1-UP; 8HS1-UP; 8JS1-UP; 8KS1-UP; 8LS1-UP; 8MS1-UP) SR4B (S/N: 1BN1-UP; 1HN1-UP; 2DM1-UP; 2DN1-UP; 2FN1-UP; 2GM1-UP; 2GN1-UP; 2HN1-UP; 2SN1-UP; 3BM1-UP; 3EN1-UP; 3FN1-UP; 3GN1-UP; 3HN1-UP; 4DM1-UP; 4EN1-UP; 4FN1-UP; 4GN1-UP; 4WN1-UP; 5DM1-UP; 5SN1-UP; 5WN1-UP; 6GM1-UP; 6SN1-UP; 7DN1-UP; 7GM1-UP; 7TN1-UP; 8DM1-UP; 8HM1-UP; AAD1-UP; AAJ1-UP; ABH1-UP; ABM1-UP; ACA1-UP; ADD1-UP; ADL1-UP; AEB1-UP; 8NN1-UP; 9CN1-UP; 9EN1-UP; ACP1-UP; AAR1-UP; ADR1-UP; 8XS1-UP; 5JW1-UP; 6DW1-UP; 8GW1-UP; ACX1-UP; AAY1-UP; ABY1-UP; AEZ1-UP; 2GZ1-UP; 8EZ1-UP; 8LZ1-UP; 8TZ1-UP; 9AZ1-UP; 9GZ1-UP; 9MZ1-UP; 9WZ1-UP) SR4B HV (S/N: A4X1-UP; A4Y1-UP; A4Z1-UP; A5A1-UP; G3N1-UP; G3R1-UP; G3S1-UP; G3T1-UP; G3W1-UP; G3X1-UP; G3Y1-UP; G3Z1-UP; G4A1-UP; G4B1-UP; AAL1-UP; ABA1-UP; ABE1-UP; ABG1-UP; ABT1-UP; ACB1-UP; ACG1-UP; ACN1-UP; ACR1-UP; ACW1-UP; ACZ1-UP; ADB1-UP; ADJ1-UP; ADT1-UP; AEA1-UP; AEG1-UP; AEL1-UP; AES1-UP; AEY1-UP; PCP1-UP) SR5 (S/N: G3M1-UP)Power Module: C32 POWER MODUL (S/N: MED1-UP; MEG1-UP) PM3412 (S/N: CAJ1-UP) PM3508 (S/N: BLM1-UP; BPY1-UP) PM3512 (S/N: BNR1-UP; BRF1-UP) PM3516 (S/N: BPD1-UP; CAC1-UP) PMG3516 (S/N: CFD1-UP)Introduction
ReferenceSpecifications, Systems Operation, Testing and Adjusting, RENR7941, "Caterpillar Digital Voltage Regulator (CDVR)"The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.The Caterpillar Digital Voltage Regulator (CDVR) is part of a complex system that requires thorough troubleshooting before making a decision on replacement of the CDVR.Problem
The CDVR