CAT 066-3533 RETAINER

CAT 066-3533 is a Caterpillar genuine bearing locator/retainer (purely original and accurate information, no additional description). It is designed for the front end of the hydraulic pump drive shaft in C7/C9 engines and is used in conjunction with the 066-1298 bearing, 065-0629 oil retainer ring, and 064-3915 spring. It is used to preload the outer ring of the bearing, limit axial movement, prevent vibration-induced loosening, and ensure reliable transmission and sealing.

Core Parameters and Information

Project Details
Part Model: CAT 066-3533 (0663533) 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 + 3×M8 Bolt Holes + Positioning Stop)

Material: SCM435 Alloy Structural Steel (Quenched and Tempered HRC32-38, Blackened Surface 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: 85 mm (3×φ8.5 mm, compatible with M8×1.25 bolts), Total Thickness: 12 mm

Performance Parameters: Preload: 1.2-1.4 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: 066-1298 Bearing, 065-0629 Oil Baffle Ring, 064-3915 Spring, 065-2745 Bearing Assembly, 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 front bearing of the hydraulic pump drive shaft

Matching Installation: 066-3533 Fixture + 064-3915 Spring (3 mm pre-compression) + 066-1298 bearing + 065-0629 oil retainer ring + M8×16 socket head cap screws (3 screws, 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 diagonally and evenly to 12-15 N·m. Check that the bearing axial movement 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.