CAT 4P-0294 Rear Gear Retainer

CAT 4P-0294 is a dedicated retainer for the valve chamber/rocker arm shaft of Caterpillar 3612/3616 series large diesel engines. It is used to fix the rocker arm shaft support and valve chamber components, preventing the components from loosening or shifting during high-speed operation. It is compatible with generator sets and industrial 3612/3616 engines, with strong adaptability and convenient installation, ensuring stable operation of the valve train. The following are the core information and key points:

Core Technical Parameters

Item Details
Part Model: CAT 4P-0294 (4P0294) Rocker Arm Shaft Fixer, used for positioning and fixing the rocker arm shaft support of 3612/3616 engines, anti-loosening and locking

Material: 42CrMo alloy steel, quenched and tempered (HB280-320), galvanized + passivated surface, corrosion resistant, tensile strength ≥1000MPa, yield strength ≥800MPa

Key Dimensions: Length 147.3mm, Width 40.6mm, Height 147.3mm, Mounting Hole Spacing 80mm, Hole Diameter 12mm, Locating Pin Diameter 8mm, Tolerance ±0.1mm, Fitting Bolt M12×1.5, Torque 80-90N・m

Compatible Models: CAT 3612, 3616 industrial/generator set engines, G3612, G3616 For gas engines, this is used to fix the rocker arm shaft support to the cylinder head, with matching bolts 4P-0295 and locating pins 4P-0296.

Performance Parameters: Operating temperature -40℃ to 150℃, vibration tolerance ≤10g, anti-loosening rating Class 8, suitable for engine speeds ≤1800rpm, ensuring high-speed stability of the valve train.

Core Functions and Structural Features:

Positioning and Anti-Loosening: Alloy steel material with heat treatment, high strength, fatigue resistance, fixing the rocker arm shaft support, preventing component loosening and displacement during high-speed engine operation, avoiding valve train malfunctions.

Precise Installation: With locating pin holes, quick positioning during installation, no additional adjustment required, compatible with original factory mounting positions, no misalignment after installation, ensuring precise fit between the rocker arm shaft and valves.

Corrosion Resistance and Durability: Galvanized + passivated surface treatment, suitable for harsh outdoor/industrial conditions, reducing rust, extending service life, and reducing maintenance frequency.

Highly adaptable: The dimensions are consistent with the original factory specifications, and it is compatible with the entire 3612/3616 series of engines. After installation, the valve train operates smoothly without abnormal wear.