CAT 137-1076 RETAINER

CAT 137-1076 is a fuel filter element holder for Caterpillar engine fuel systems, compatible with C7.1/C9.3 engines (used in 320GC/323GC excavators, 950GC loaders, etc.). Its core function is to position and clamp the fuel filter element, preventing displacement and leakage caused by oil pressure surges, thus ensuring stable fuel supply. The following is professional structured information.

Core Parameters (Professional Version)

Project Details
Basic Attributes
Model 137-1076, 1 piece per unit, compatible with Cat 1R-0739/1R-0750 fuel filter element, used in engine fuel filter assembly, positioning and clamping the filter element to prevent loosening and leakage.

Key Dimensions
Outer diameter 86 mm (tolerance h6: 0–-0.025 mm), inner diameter 72 mm (tolerance H7: 0–+0.030 mm), height 25 mm, flange thickness 4 mm, bolt holes M6×1 (3 evenly distributed, pitch circle diameter 76 mm), positioning step height 2.5 mm (tolerance ±0.1 mm)

Material and Process
Material is 35CrMo alloy steel (quenched and tempered HB220–260), surface galvanized and passivated (salt spray test ≥360 hours), flange end face precision ground (flatness ≤0.02 mm), clamping claw elastic deformation ≤0.4 mm. mm, bolt hole thread accuracy 6H

Performance Parameters: Rated clamping force ≥10 kN, operating temperature -40℃ to +120℃, compatible filter element diameter 72 mm (tolerance h8), maximum working oil pressure 6 bar, fuel compatibility (diesel/biodiesel B20), clamping jaw fatigue life ≥4000 cycles

Compatible Models: Cat C7.1/C9.3 engine, compatible with 320GC/323GC/326GC excavators, 950GC/962GC loaders, M318F wheeled excavators, matching filter housing 137-1075, filter element 1R-0739/1R-0750

Installation and Maintenance Points: 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 →15 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 < 1.8 mm) to prevent filter element loosening and leakage.

Troubleshooting: If fuel leakage occurs, first check the retainer bolt torque (≤12 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.