RING-WEAR 5J7154 - Caterpillar

Generator Set Engine:
3406B (S/N: 2WB1-UP)
3408 (S/N: 78Z1-UP)
3412 (S/N: 2WJ1-UP; 81Z1-UP)
3412C (S/N: BAK1-UP)
G3408C SI TA (S/N: BAZ1-UP)
G3412C (S/N: 9RR1-UP)
Petroleum Engine:
3412E (S/N: Z2D1-UP)
G3406 SI TA (S/N: 4FD1-UP)
G3406 (S/N: 1RK1-UP)
G3408 (S/N: 6RJ1-UP)
G3408 SI TA (S/N: 6NB1-UP)
G3412 (S/N: 7DB1-UP)
G3412C (S/N: 6ZM1-UP)
Generator Set:
3406 GEN SET (S/N: 4ZR1-UP)
3406C GEN SET (S/N: C2G1-UP; C5G1-UP; C8G1-UP; KPS1-UP; 1LS1-UP; 9ES1-UP; LRX1-UP)
3406C MARINE GS DI TA (S/N: PFH1-UP)
3408C (S/N: TAM1-UP)
3412C GEN SET (S/N: LRY1-UP; BCW1-UP; TFT1-UP; 9EP1-UP; DJN1-UP; 4BZ1-UP; BAX1-UP)
3412C DI TA (S/N: RLR1-UP)
3412E (S/N: TGC1-UP)
G3406 (S/N: R7E1-UP)
G3406 SI (S/N: KAR1-UP)
G3412 SI (S/N: KAP1-UP; R7A1-UP)
Industrial Engine:
3406B IND DI (S/N: 6TB1-UP)
3406C IND (S/N: 3ER1-UP)
3408 (S/N: DLA1-UP; 67U1-UP)
3408E REMAN (S/N: BFD1-UP; ECP1-UP; BKY1-UP)
3412 (S/N: 4CR1-UP; BCS1-UP; 38S1-UP)
3412C (S/N: 8AR1-UP)
3412 REMAN (S/N: BLJ1-UP; BKS1-UP)
3412C REMAN (S/N: B1A1-UP)
3412D (S/N: REA1-UP)
3412E IND (S/N: BFT1-UP; BDT1-UP)
3412E REMAN (S/N: BNF1-UP)
G3408C (S/N: 8YR1-UP)
Marine Engine:
3406 (S/N: 4TB1-UP)
3406C MARINE (S/N: 1SS1-UP)
3408 (S/N: 99U1-UP)
3408C MARINE (S/N: 1TS1-UP; 9ER1-UP)
3412 (S/N: 60M1-UP)
3412 DI TA (S/N: 7BL1-UP)
3412C (S/N: 9BR1-UP)
3412E MARINE (S/N: 9KS1-UP; 9PW1-UP)
Pumper:
HT400 DI TA (S/N: 7141-UP)
SPT342 (S/N: 3CZ1-UP)
Power Module:
3412C (S/N: 5FL1-UP)
PM3412 (S/N: CAJ1-UP)
Description of Change: A new guide spring is now used on 3400 Engines. The new guide spring is narrower. This will eliminate the chance of the spring that may become bent or broken. Bent guide springs or broken guide springs could lead to damaged lobes on the cam and valve lifters.Adaptable To: Replace the old 6N-6872 Guide Spring with the new 305-6843 Guide Spring.