SHOVEL 5557116 - Caterpillar

(2WM) Excavators;
416B (8SG, 8ZK),
428B (7EJ) Backhoe LoadersDescription of Change: A new piston assembly and a new piston ring kit is used in the naturally aspirated 3054 Machine Engines in these machines. The new components will provide reduced oil consumption.Adaptable To: The new 135-0264 Piston Assembly and 135-0263 Piston Ring Kit replace the 6I-0226 Piston Assembly and 6I-0225 Piston Ring Kit in the naturally aspirated 3054 Machine Engines in these machines. The new components are effective with naturally aspirated 3054 (5HK30746) Machine Engines. The new 135-0264 Piston Assembly can be used to replace the 6I-0226 Piston Assembly in earlier engines ONLY if ALL four of the 6I-0226 Piston Assemblies are replaced. The new 135-0263 Piston Ring Kit can be used to replace the 6I-0225 Piston Ring Kit in earlier engines.