SEAL 1878002 - Caterpillar

Electric Power Generation:
C15 (S/N: LWR1-UP)
Engine:
C15 (S/N: ZKA1-UP; TRB1-UP; LDN1-UP)
C18 (S/N: ZKB1-UP; BDN1-UP; DES1-UP)
Generator Set:
3456 (S/N: CCB1-UP; EPE1-UP; C1G1-UP; C3G1-UP; C4G1-UP; DPG1-UP; CAH1-UP; GHJ1-UP; C2T1-UP; CBX1-UP; 9BZ1-UP)
C15 (S/N: T4A1-UP; PEC1-UP; C5E1-UP; STG1-UP; C5H1-UP; C5L1-UP; NKL1-UP; X4R1-UP; CYY1-UP; PET1-UP)
C18 (S/N: C6C1-UP; G4C1-UP; N1C1-UP; N1D1-UP; STD1-UP; DKE1-UP; PEE1-UP; PEJ1-UP; NKK1-UP; STM1-UP; DDS1-UP; DES1-UP; EKW1-UP; M1Y1-UP; DCT1-UP; GBM1-UP; CYN1-UP; GEN1-UP; MGS1-UP; M1Z1-UP)
Industrial Engine:
C-15 (S/N: BEM1-UP)
C-16 (S/N: BFM1-UP)
C15 (S/N: JRE1-UP; JAS1-UP)
C18 (S/N: JDA1-UP; NBB1-UP; WJH1-UP)
Marine Engine:
3406E (S/N: 9WR1-UP)
C15 (S/N: RLA1-UP)
C18 (S/N: WKB1-UP; PLE1-UP; CKH1-UP; C1J1-UP; GES1-UP; KJT1-UP; JKX1-UP; NAX1-UP; NAY1-UP)
C18 (S/N: J2K1-UP; T2P1-UP)
Petroleum Engine:
C-15 (S/N: Z2C1-UP)
C15 (S/N: JDK1-UP)
C18 (S/N: MPE1-UP; WJW1-UP)
Petroleum Power Train Package:
TH35-C15I (S/N: PBN1-UP)
TH35-C15T (S/N: PBL1-UP)
Engine News SEBD9687, 6 January 2011, "A New Valve Bridge Is Available for Certain Commercial Engines". Disregard the previous article, refer to the article that follows.The new 363-3731 Valve Bridge is now available as an optional service replacement of the existing valve bridge on the serial numbers listed above.The new valve bridge is thinner than the existing and does not have a notch cut in the bottom of the bridge. The new bridges allow for more clearance to set the clearances on the cylinder head valves.
Illustration 1 g02373836
(1) Current production valve bridge (2) New 363-3731 Valve Bridge Note: The new bridges must be ordered and replaced as a set.