PLATE 1003410 - Caterpillar

Cold Planer: PM-200 (S/N: P1C1-UP) PM-201 (S/N: PNM1-UP) PM200 (S/N: P1M1-UP)Landfill Compactor: 836H (S/N: BXD1-UP)Engine: C-18 (S/N: MDP1-UP) C18 (S/N: EJG1-UP)Generator Set: C18 (S/N: C6C1-UP; G4C1-UP; DKE1-UP; EKW1-UP; CYN1-UP; DCT1-UP)Marine Engine: C18 (S/N: CKH1-UP; C1J1-UP)Excavator: 385C (S/N: EDA1-UP; MMA1-UP; KGB1-UP; KBC1-UP; SBE1-UP; T2E1-UP; T2F1-UP; KKK1-UP; EAM1-UP; JCM1-UP; WAW1-UP; MNZ1-UP) 390D (S/N: WAG1-UP; WAP1-UP)Motor Grader: 24M (S/N: B9K1-UP)Mobile Hydraulic Power Unit: 385C MHPU (S/N: MSF1-UP)Off-Highway Truck/Tractor: 772 (S/N: RLB1-UP)Track-Type Tractor: D9T (S/N: RJS1-UP)Underground Articulated Truck: AD45B (S/N: CXM1-UP) AD55 (S/N: DNW1-UP)Wheel Dozer: 834H (S/N: BTX1-UP)Wheel Loader: 988H (S/N: BXY1-UP)Wheel Tractor-Scraper: 631G (S/N: DFA1-UP) 637G (S/N: DFJ1-UP) 657G (S/N: W1B1-UP; W1C1-UP; A4G1-UP; GER1-UP)Introduction
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.Problem
There have been reports of piston seizures on C18 Engines with no apparent root cause. A failure mode of debris that is clogging the piston cooling jets has been identified.Solution
If an engine is being repaired for a piston seizure all the piston cooling jets must be removed and the piston cooling jets must be inspected. Run a piece of wire that is the appropriate size through the piston cooling jet in order to dislodge any possible debris before reinstalling the piston cooling jet.Note: The piston cooling jet that is removed from the cylinder with the seizure must be replaced.Refer to Illustration 1 for an example of the debris in the piston cooling jet. Refer to Illustration 2 for an example of the size of the debris that is needed to clog the piston cooling jet.
Illustration 1 g01952029
(1) Debris in the piston cooling jet
Illustration 2 g01952032
(2) Seized piston (3) Debris from piston cooling jet that caused seizure