CAT 094-3940 RETAINER

CAT 094-3940 (0943940) is a high-strength steel retainer for Caterpillar construction machinery hydraulic/transmission systems. It is used for positioning and securing final drive end caps, hydraulic pump housings, or valve manifold interfaces. Suitable for small and medium-sized excavators and loaders, it prevents component loosening and ensures stable equipment operation (Cat® Parts).

Core Parameters

Item Details
Part Model: CAT 094-3940 (0943940) Fixture

Type: Steel fixture for final drive/hydraulic pump/valve assembly interface, with positioning and bolt holes, suitable for end cap/housing/interface positioning and fastening

Material: Q345 low alloy high strength steel, stamped, galvanized/powder coated for corrosion protection, deformation-resistant, impact-resistant, suitable for medium and heavy-duty working conditions

Key Dimensions: Outer diameter approx. 180mm, inner diameter approx. 120mm, thickness approx. 8mm, bolt hole diameter approx. 14mm, positioning hole diameter approx. 10mm, single weight approx. 6.2kg

Compatible Models: CAT 320, 323, 326 excavators, 950, 962 wheel loaders hydraulic and transmission systems

Matching Relationship: Matched with high-strength bolts, nuts, and flat washers; typically 1-2 pieces per component. Cat® Parts are used to secure final drive end caps, hydraulic pump housings, valve assembly interfaces, etc.

Compatibility and Applications
Compatible Parts: Final drive end caps, hydraulic pump housings, valve assembly interfaces, etc. Positions and secures components, distributes load, prevents loosening and displacement, and ensures installation accuracy and operational stability.

Application Scenarios: Medium to heavy-duty applications such as urban construction, road construction, and earthmoving. Suitable for the hydraulic and transmission systems of small and medium-sized excavators and wheel loaders, improving component installation stability and operational accuracy.

Core Functions: Positions and secures final drive end caps, hydraulic pump housings, and other components, distributes load, prevents loosening and displacement, ensures stable operation of the hydraulic and transmission system, and extends component lifespan.

Installation and Maintenance Points
Installation: Clean the mounting surface and the surface of the retainer. Check that the positioning holes and bolt holes match. Tighten high-strength bolts to the specified torque (approximately 220-260 N·m), ensuring a tight fit without gaps. After installation, check that the components are not loose or displaced.

Maintenance: Check the bolt tightness and the condition of the fasteners for deformation/cracks every 250 hours. Tighten any loose bolts immediately, and replace any deformed or cracked parts immediately to prevent component detachment or malfunction.

Replacement: Use genuine parts first. When replacing parts, verify the model and dimensions. After installation, test the relevant systems to ensure they operate normally, without abnormal noise or leakage, and guarantee stable equipment operation.