CAT 065-7882 RETAINER

CAT 065-7882 is a Caterpillar genuine bearing locator/retainer (purely genuine and accurate information, no additional description). It is used at the rear end of the hydraulic pump drive shaft in C7/C9 engines. It is used with the 065-2745 bearing assembly, 065-7804 bearing, 065-0629 oil retainer ring, and 064-3915 spring. It positions and preloads the outer ring of the bearing to prevent axial movement and vibration-induced loosening, ensuring reliable transmission and sealing.

Core Parameters and Information

Project Details
Part Model: CAT 065-7882 (0657882) Bearing Positioning Fixture (Flange Type, with Spring Groove + Positioning Stop + Bolt Holes)

Structure Type: Integrated Stamped Flange Fixture (including Outer Ring Preload Ring + Spring Positioning Groove + 4×M8 Bolt Holes + Positioning Stop)

Material: SCM435 Alloy Structural Steel (Quenched and Tempered HRC32-38, Surface Blackening Oxidation Treatment, Rust Resistance ≥96 Hour Salt Spray), Weight: 0.32 kg

Key Dimensions: Flange Outer Diameter: 90 mm, Positioning Stop Diameter: 85 mm, Spring Groove Diameter: 75 mm (Width: 5 mm, Depth: 3 mm), Bolt Hole Distribution Circle Diameter: 90 mm (4×φ8.5 mm, compatible with M8×1.25 bolts), Total Thickness: 12 mm

Performance Parameters: Preload: 1.2-1.5 kN (with 064-3915 spring), Operating Temperature: – 40℃ to 120℃, impact strength ≥12 J/cm², fatigue life ≥10⁶ cycles

Compatibility Standard: Meets SAE J429 Grade 8 strength level, bolt tightening torque 12-15 N・m, positioning runout ≤0.02 mm

Compatible Models and Assemblies

Compatible Parts: 065-2745 Bearing Assembly, 065-7804 Bearing, 065-0629 Oil Baffle Ring, 064-3915 Spring, 064-2311 Washer, 352-0618 Drive Shaft

Compatible Equipment: CAT 320D2/323D2/329D2 Excavators, 950K/966K Loaders, D6T/D7E Bulldozers (C7/C9 Engines), for positioning and preloading of the rear bearing of the hydraulic pump drive shaft

Matching Installation: 065-7882 Fixture + 064-3915 Spring (3 mm pre-compression) + 065-2745 Assembly / 065-7804 Bearing + 065-0629 Oil Retainer Ring + M8×16 Socket Head Screws (4 pieces, tighten diagonally)

Installation and Maintenance Points:
Clean the mating surfaces of the retainer and bearing housing, checking for deformation, cracks, or thread damage. Ensure the spring groove and locating stop are free of burrs.

First, install the 064-3915 spring into the retainer groove. Then, align the retainer stop with the bearing outer ring, fitting it against the bearing housing end face, and insert the M8×16 screws.

Tighten the screws evenly diagonally to 12-15 N·m. Check that the bearing axial runout is ≤0.10 mm and that there is no jamming or abnormal noise during rotation.

Maintenance: Every 2000 hours, check for retainer deformation (flatness ≤0.10 mm) and loose bolts. Replace the retainer if cracks, deformation, or stripped threads are found.