CAT 094-7886 RETAINER

CAT 094-7886 (0947886) is a dedicated radial retainer for Caterpillar hydraulic pump/motor end covers. It is used to lock the end cover to the housing, preventing loosening and radial displacement caused by vibration. It is compatible with the hydraulic/transmission systems of medium and large excavators and loaders, ensuring sealing and stable operation.

Core Parameters

Item Details
Part Model CAT 094-7886 (0947886) Radial Fixture

Type: Radial locking fixture for hydraulic pump/motor end caps, preventing loosening and radial displacement

Material: 42CrMo alloy steel, heat treated with tempering, blackened surface oxidation + Dacromet coating, tensile strength ≥1080MPa, impact resistant, corrosion resistant

Key Dimensions: Diameter approx. 75mm, length approx. 95mm, thread specification M64×2, single weight approx. 3.2kg, suitable for corresponding mounting holes

Compatible Models: CAT 330, 336 excavators, 972, 980 loaders, suitable for hydraulic pumps/slewing motors of C9.3, C13 engines

Matching Relationship: Commonly used with end caps, gaskets, and lock nuts; single component uses 2-4 Symmetrical Installation and Locking

Suitable for: Hydraulic pump front cover, rotary motor front cover, gearbox output shaft end cover. Locking end covers prevent vibration-induced loosening, ensure sealing and lubrication, and prevent oil leakage and component wear.

Application Scenarios: Suitable for severe vibration conditions such as mining, large-scale earthmoving, and heavy-duty hoisting. Adaptable to medium and large equipment power systems, improving operational stability and safety.

Core Functions: Provides high-strength radial locking to counteract vibration and impact loads, prevent bolt loosening and radial displacement of components, protect seals and bearings, extend component life, and reduce maintenance frequency (Cat).

Installation and Maintenance Points
Installation: Clean threads and mounting holes, apply CAT-specific anti-loosening adhesive, and tighten in 2-3 steps diagonally to the specified torque (approximately 550-600 N·m), ensuring a tight fit without gaps. After fixing, check for looseness and no radial displacement.

Maintenance: Check the tightness and coating integrity every 300 hours. Tighten immediately and reapply anti-loosening adhesive if loose. Regularly check for abnormal noises and temperatures in related components; disassemble and repair if abnormalities are found.

Replacement: Prioritize original parts. Verify model and dimensions. After installation, test the power system to ensure it operates normally, without abnormal noises, leaks, or loose parts.