PLATE-RETRACTION 6E6154 - Caterpillar

Engine:
3508C (S/N: TTA1-UP; TTB1-UP; F1X1-UP)
3512C (S/N: TTC1-UP; TTE1-UP; TTF1-UP; SBG1-UP; TTG1-UP; MLM1-UP; SLM1-UP; RMS1-UP; NJT1-UP; E3W1-UP; E3X1-UP; E3Y1-UP)
3516C (S/N: PRC1-UP; TTD1-UP; TTH1-UP; SBJ1-UP; SCJ1-UP; TTJ1-UP; JTS1-UP; T2X1-UP; E3Z1-UP)
Petroleum Engine:
3508C (S/N: LLC1-UP; C8E1-UP; LLE1-UP; C8K1-UP)
3512C (S/N: LLA1-UP; R1A1-UP; LLB1-UP; LLF1-UP)
3516C (S/N: PES1-UP)
Petroleum Power Train Package:
TH48-E80-3512CP (S/N: PLZ1-UP)
TH55-E70-3512CP (S/N: PNY1-UP)
During major overhauls, cylinder blocks and cylinder heads are often machined for reuse. If the maximum limit for machining is reached, the injector tips and the pistons could possibly make contact.New replacement pistons are available to help prevent the possibility of interference between the injector tips and the pistons.The bowls of the replacement pistons are designed differently than the bowls of the original pistons. Refer to Illustration 1.
Illustration 1 g03138716
(1) Original piston (2) Replacement pistonThe original pistons and the replacement pistons use the same piston cooling jets.The original pistons and the replacement pistons have the same mass, allowing for a mixture of the pistons in the same engine.The original pistons and the corresponding replacement pistons are listed in Table 1.
Table 1
Original Piston     Replacement Piston    
314-5006 Piston     374-2082 Piston    
348-5356 Piston     374-2083 Piston