CAT 164-3765 15.8mm Metallic Retainer

CAT 164-3765 is a fuel filter element retainer for Caterpillar engine fuel systems, compatible with C13/C15/C18 engines (used in 336D2/349D excavators, 988K loaders, etc.). Its core function is to secure the filter element to prevent displacement caused by oil pressure surges, ensuring a stable seal and fuel supply. The following is professional structured information.

Core Parameters (Professional Version)

Project Details
Basic Attributes
Model 164-3765, 1 piece per unit, compatible with Cat 1R-0750/1R-0762 fuel filter element, used in engine fuel filter assembly, positioning and clamping the filter element to prevent loosening and leakage.

Key Dimensions
Outer diameter 92 mm (tolerance h6: 0–-0.030 mm), inner diameter 78 mm (tolerance H7: 0–+0.030 mm), height 28 mm, flange thickness 5 mm, bolt holes M8×1.25 (3 evenly distributed, pitch circle diameter 82 mm), positioning step height 3 mm (tolerance ±0.1 mm)

Material and Process
Material is 40Cr alloy steel (quenched and tempered HB240–280), surface galvanized and passivated (salt spray test ≥480 hours), flange end face precision ground (flatness ≤0.02 mm), clamping claw elastic deformation ≤0.5 mm. mm, bolt hole thread accuracy 6H

Performance Parameters: Rated clamping force ≥12 kN, operating temperature -40℃ to +120℃, compatible filter element diameter 78 mm (tolerance h8), maximum working oil pressure 8 bar, fuel compatibility (diesel/biodiesel B20), clamping jaw fatigue life ≥5000 cycles

Compatible Engines: Cat C13/C15/C18 engines, compatible with 336D2/349D/374D excavators, 988K/966M loaders, 777G mining trucks, matching filter housing 164-3766, filter element 1R-0750/1R-0762

Installation and Maintenance Points:

Installation Specifications: Clean the retainer flange and housing sealing surfaces before installation. Apply Cat MTO-1000 grease to the filter element sealing ring. Pre-tighten the retainer bolts diagonally →18 N・m Tighten the torque to ensure the clamping claws are fully engaged in the filter element groove without any looseness.

Maintenance Cycle: Every 500 hours when changing the filter element, check the retainer. Replace immediately if the flange is deformed (flatness > 0.05 mm) or the clamping claws are worn (thickness < 2 mm) to prevent filter element loosening and leakage.

Troubleshooting: If fuel leakage occurs, first check the retainer bolt torque (≤15 N·m requires retightening), whether the clamping claws are broken, and whether there are impurities on the sealing surface. Replace the retainer and sealing ring if necessary.